HATNet Project - AbsoluteAstronomy.com

The Hungarian Automated Telescope Network (HATNet) project is a network of six small fully automated "HAT" telescopes. The scientific goal of the project is to detect and characterize extrasolar planets using the transit method. This network is used also to find and follow bright variable star

Variable star

A star is classified as variable if its apparent magnitude as seen from Earth changes over time, whether the changes are due to variations in the star's actual luminosity, or to variations in the amount of the star's light that is blocked from reaching Earth...

s. The network is maintained by the Harvard-Smithsonian Center for Astrophysics

Harvard-Smithsonian Center for Astrophysics

The Harvard–Smithsonian Center for Astrophysics is one of the largest and most diverse astrophysical institutions in the world, where scientists carry out a broad program of research in astronomy, astrophysics, earth and space sciences, and science education...

.

The HAT acronym stands for Hungarian-made Automated Telescope, because it was developed by a small group of Hungarians who met through the Hungarian Astronomical Association. The project started in 1999 and has been fully operational since May 2001.

Equipment

The prototype instrument, HAT-1 was built from a 180 mm focal length and 65 mm aperture Nikon

Nikon

, also known as just Nikon, is a multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging. Its products include cameras, binoculars, microscopes, measurement instruments, and the steppers used in the photolithography steps of semiconductor fabrication, of which...

telephoto lens

Telephoto lens

In photography and cinematography, a telephoto lens is a specific type of a long-focus lens in which the physical length of the lens is shorter than the focal length. This is achieved by incorporating a special lens group known as a telephoto group that extends the light path to create a long-focus...

and a Kodak KAF-0401E chip of 512 × 768, 9 μm pixels. The test period was from 2000 to 2001 at the Budapest

Budapest

Budapest is the capital of Hungary. As the largest city of Hungary, it is the country's principal political, cultural, commercial, industrial, and transportation centre. In 2011, Budapest had 1,733,685 inhabitants, down from its 1989 peak of 2,113,645 due to suburbanization. The Budapest Commuter...

, Konkoly Observatory

Konkoly Observatory

Konkoly Obszervatórium is an astronomical observatory owned and operated by Hungarian Academy of Sciences. It is located in Budapest, Hungary. It was founded in 1871 by Miklos Konkoly-Thege as his private observatory....

.

HAT-1 was transported from Budapest to the Steward Observatory

Steward Observatory

The University of Arizona's Steward Observatorys main office is located on the University's campus and is closely tied to the Department of Astronomy. Established in 1916 by its first director, Andrew Ellicott Douglass, and a $60,000 bequest made by Lavinia Steward in memory of her late husband...

, Kitt Peak

Kitt Peak

Kitt Peak is a mountain in the U.S. state of Arizona. It is the location of the Kitt Peak National Observatory. The radio telescope at the Observatory is one of ten dishes comprising the Very Long Baseline Array ....

, Arizona

Arizona

Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

, in January 2001. The transportation caused serious damage to the equipment.

Later built telescopes use Canon 11 cm diameter f/1.8L lenses for a wide-field of 8°×8°. It is a fully automated instrument with 2K x 2K Charge-coupled device

Charge-coupled device

A charge-coupled device is a device for the movement of electrical charge, usually from within the device to an area where the charge can be manipulated, for example conversion into a digital value. This is achieved by "shifting" the signals between stages within the device one at a time...

(CCD) sensors. One HAT instrument operates at the Wise Observatory

Wise Observatory

The Florence and George Wise Observatory is an astronomical observatory owned and operated by Tel-Aviv University. It is located 5 km west of the city of Mitzpe Ramon in the Negev desert near the edge of the Ramon Crater, and it is the only professional astronomical observatory in...

.

HAT is controlled by a single Linux

Linux

Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

Personal computer

A personal computer is any general-purpose computer whose size, capabilities, and original sales price make it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator...

without human supervision. Data are stored in a MySQL

MySQL

MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

database.

HAT-South

From 2009, three other locations joined the HATNet with telescopes of completely new design. The telescopes are deployed to Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, Namibia

Namibia

Namibia, officially the Republic of Namibia , is a country in southern Africa whose western border is the Atlantic Ocean. It shares land borders with Angola and Zambia to the north, Botswana to the east and South Africa to the south and east. It gained independence from South Africa on 21 March...

and Chile

Chile

Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...

. Each system has eight (2*4) joint-mounted, quasi-parallel Takahashi

Takahashi Seisakusho

Takahashi Seisakusho is a Japanese manufacturer of telescopes and related equipment, such as eyepieces and mounts.Often known simply as 'Tak', the brand is especially noted amongst amateur astronomers for its range of apochromatic refractors, but also produces various types of reflectors, and...

Epsilon (180 mm diameter, f/2.8) astrograph

Astrograph

An astrograph is a telescope designed for the sole purpose of astrophotography. Astrographs are usually used in wide field surveys of the night sky as well as detection of objects such as asteroids, meteors, and comets.-Design:...

s with Apogee 4k*4k CCDs

Charge-coupled device

with overlapping fields of view. The processing computers Xenomai

Xenomai

Xenomai is a real-time development framework cooperating with the Linux kernel, to provide a pervasive, interface-agnostic, hard real-time support to user space applications, seamlessly integrated into the Linux environment....

-based industrial PCs with 10 TB of storage. The funding is provided until 2013.

Participants in the project

HAT-1 was developed during the undergraduate (and also the first year graduate) studies of Gáspár Bakos (Eötvös Loránd University) and at Konkoly Observatory

Konkoly Observatory

(Budapest), under the supervision of Dr. Géza Kovács. In the development József Lázár, István Papp and Pál Sári also played an important role.

Planets discovered

Twenty-nine extrasolar planets have been discovered so far by the HATNet project (note that the discovery of the planet WASP-11b/HAT-P-10b, WASP-40b/HAT-P-27b and WASP-51b/HAT-P-30b was simultaneously announced by the SuperWASP

SuperWASP

SuperWASP is an international academic organisation performing an ultra-wide angle search for transiting extrasolar planets with the aim of covering the entire sky down to ~15th magnitude.-Equipment:...

team). All have been discovered using the transit method. In addition, the radial velocity followup has detected an additional companion, either a massive planet or a small brown dwarf

Brown dwarf

Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...

around the star HAT-P-13, making this the first known transiting planet in a system with an outer companion in a well-characterised orbit.

Star Star A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...	Constellation Constellation In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....	App. mag. Apparent magnitude The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...	Distance (ly)	Spectral type Stellar classification In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...	Planet Planet A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science,...	Mass Mass Mass can be defined as a quantitive measure of the resistance an object has to change in its velocity.In physics, mass commonly refers to any of the following three properties of matter, which have been shown experimentally to be equivalent:... (M_J Jupiter mass Jupiter mass , is the unit of mass equal to the total mass of the planet Jupiter . Jupiter mass is used to describe masses of the gas giants, such as the outer planets and extrasolar planets. It is also used in describing brown dwarfs.... )	Radius Radius In classical geometry, a radius of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment, which is half the diameter. If the object does not have an obvious center, the term may refer to its... (R_J)	Orbital period Orbital period The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of... (d Day A day is a unit of time, commonly defined as an interval equal to 24 hours. It also can mean that portion of the full day during which a location is illuminated by the light of the sun... )	Semimajor axis (AU Astronomical unit An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance.... )	Orbital eccentricity	Inclination Inclination Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit... (° Degree (angle) A degree , usually denoted by ° , is a measurement of plane angle, representing 1⁄360 of a full rotation; one degree is equivalent to π/180 radians... )	Discovery year	Ref
ADS 16402 B ADS 16402 ADS 16402 is a binary star system, composed of two sun-like stars located 450 light-years away in the constellation Lacerta. The two stars are separated by 1500 AUs. The star system is estimated to be 3.6 billion years old...	Lacerta Lacerta Lacerta is one of the 88 modern constellations defined by the International Astronomical Union. Its name is Latin for lizard. A small, faint constellation, it was created in 1687 by the astronomer Johannes Hevelius. Its brightest stars form a "W" shape similar to that of Cassiopeia, and it is thus...	10.4	453	G0V	HAT-P-1b	0.524	1.225	4.4652934	0.0553	<0.067	86.28	2006
HD 147506 HD 147506 HD 147506 is a magnitude 8.7 F8 dwarf star that is somewhat larger and hotter than our sun. The star is 440 light years from Earth and is positioned near the keystone of Hercules.It is estimated to be 2 to 3 billion years old.- Planetary system :...	Hercules Hercules (constellation) Hercules is a constellation named after Hercules, the Roman mythological hero adapted from the Greek hero Heracles. Hercules was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations today...	8.71	440	F8	HAT-P-2b HAT-P-2b HAT-P-2b is an extrasolar planet detected by the HATNet Project in May 2007. It orbits a class F star, , located about 440 light-years away in the constellation Hercules...	8.65	0.951	5.63341	0.0677	0.5163	90	2007
GSC 03466-00819 HAT-P-3 HAT-P-3, also referred to by the designation GSC 03466-00819 is a star located about 450 light-years away in the constellation Ursa Major. At a magnitude of about 12 it is not visible to the naked eye but is visible in a small to medium-sized amateur telescope...	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	11.86	457	K	HAT-P-3b HAT-P-3b HAT-P-3b is an extrasolar planet that orbits the star HAT-P-3 approximately 457 light-years away in the constellation of Ursa Major. It was discovered by the HATNet Project via the transit method, so both its mass and radius are known quite precisely; based on these figures it is predicted that...	0.599	0.890	2.899703	0.03894	0	87.24	2007
BD+36°2593	Boötes Boötes Boötes is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman...	11.2	1010	F	HAT-P-4b HAT-P-4b HAT-P-4b is an extrasolar planet orbiting the star HAT-P-4 over 1000 light years away in Boötes constellation. It was discovered by transit on October 2, 2007, which looks for slight dimming of stars caused by planets that passed in front of them...	0.68	1.27	3.056536	0.0446	0	89.9	2007
GSC 02634-01087 HAT-P-5 HAT-P-5 is a 12th magnitude star in the constellation Lyra, approximately 1,100 light years away from Earth. It is a spectral type G star, about 1.16 solar masses and radii greater than our Sun, and only 200 Kelvins hotter...	Lyra Lyra Lyra is a small constellation. It is one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations recognized by the International Astronomical Union. Its principal star, Vega — a corner of the Summer Triangle — is one of the brightest...	12	1110	G	HAT-P-5b HAT-P-5b HAT-P-5b is a transiting extrasolar planet located approximately 1100 light-years away in the constellation of Lyra, orbiting the star HAT-P-5. It is a hot Jupiter with a mass 6% greater than Jupiter and a radius 26% greater than Jupiter, corresponding to a density of 0.66 g/cm3, which is less than...	1.06	1.26	2.788491	0.04075	0	86.75	2007
GSC 03239-00992 HAT-P-6 HAT-P-6 is a star in the constellation Andromeda, located approximately 650 light years or 200 parsecs away from the Earth. It is an F-type star, implying that it is hotter and more massive than our Sun. The apparent magnitude of the star is +10.54, which can only be visible through the telescope...	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	10.5	650	F	HAT-P-6b HAT-P-6b HAT-P-6b is a transiting extrasolar planet located approximately 650 light-years away in the constellation of Andromeda, orbiting the star HAT-P-6. This hot Jupiter planet orbits with a semi-major axis of about 7.832 gigameters, and takes 92 hours, 28 minutes, 17 seconds and 9 deciseconds to orbit...	1.057	1.33	3.852985	0.05235	0	85.51	2007
GSC 03547-01402 HAT-P-7 HAT-P-7 is a yellow white dwarf star located about 1044 light-years away in the constellation Cygnus. The apparent magnitude of this star is 10.5, which means it is not visible to the naked eye but can be seen with a small telescope on a clear dark night.-Planetary system:This star has one known...	Cygnus Cygnus (constellation) Cygnus is a northern constellation lying on the plane of the Milky Way. Its name is the Latinized Hellenic word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross...	10.5	1044	F8	HAT-P-7b HAT-P-7b HAT-P-7b is an extrasolar planet discovered in 2008. It orbits very close to its parent star GSC 03547-01402, and is both larger and more massive than Jupiter. Due to the extreme heat it receives from its star, the dayside temperature is predicted to be 2730 K...	1.776	1.363	2.2047299	0.0377	0	85.7	2008
GSC 02757-01152 HAT-P-8 HAT-P-8 is a magnitude 10 star located 750 light-years away in Pegasus.- Planetary system :In 2008 the HATNet Project announced the discovery of extrasolar planet HAT-P-8b around this star. This planet is hot jupiter gas giant planet....	Pegasus Pegasus (constellation) Pegasus is a constellation in the northern sky, named after the winged horse Pegasus in Greek mythology. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations.-Stars:...	10.17	750	F	HAT-P-8b HAT-P-8b HAT-P-8b is an extrasolar planet located approximately 750 light years away in the constellation of Pegasus, orbiting the 10th magnitude star GSC 02757-01152. This planet was discovered by transit on December 5, 2008. Despite the designation as HAT-P-8b, it is the 11th planet discovered by the...	1.52	1.5	3.07632	0.0487	0	87.5	2008
HAT-P-9 HAT-P-9 \|- bgcolor="#FFFAFA"\| Equatorial [ g ] \|\| 201,21 m/s2HAT-P-9 is a magnitude 12 star approximately 1560 light years away in the constellation Auriga.-Planetary system:...	Auriga Auriga (constellation) Auriga is a constellation in the northern sky. Its name is Latin for 'charioteer' and its stars form a shape that has been associated with the pointed helmet of a charioteer. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains among the 88 modern...	12.34	1560	F	HAT-P-9b HAT-P-9b HAT-P-9b is an extrasolar planet approximately 1560 light years away in the constellation Auriga. This planet was found by the transit method on June 26, 2008. It has mass 78% that of Jupiter and radius 140% that of Jupiter...	0.78	1.4	3.92289	0.053	0	86.5	2008
WASP-11/HAT-P-10 WASP-11/HAT-P-10 WASP-11/HAT-P-10 is a magnitude-12 main-sequence orange dwarf star about 400 light years away in the constellation Perseus.-Planetary system:...	Perseus Perseus (constellation) Perseus is a constellation in the northern sky, named after the Greek hero Perseus. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations defined by the International Astronomical Union...	11.89	408	K3V	WASP-11b/HAT-P-10b	0.460	1.045	3.7224690	0.0439	0	88.5	2008
GSC 03561-02092 HAT-P-11 HAT-P-11, also designated GSC 03561-02092, is an orange dwarf metal rich star about 123 light-years away in the constellation Cygnus. This star is notable for its relatively large rate of proper motion. The magnitude of this star is about 9, which means it is not visible to the naked eye but can be...	Cygnus Cygnus (constellation) Cygnus is a northern constellation lying on the plane of the Milky Way. Its name is the Latinized Hellenic word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross...	9.59	123.5	K4	HAT-P-11b HAT-P-11b HAT-P-11b is an extrasolar planet orbiting the star HAT-P-11. This planet was discovered by the transit method and submitted for publication on January 2, 2009....	0.081	0.422	4.8878162	0.053	0.198	88.5	2009
HAT-P-12 HAT-P-12 HAT-P-12 is a magnitude 13 star approximately 465 light years away in the constellation Canes Venatici.- Planetary system :An exoplanet, HAT-P-12b, was discovered orbiting the star by the transit method in 2009....	Canes Venatici Canes Venatici Canes Venatici is one of the 88 official modern constellations. It is a small northern constellation that was created by Johannes Hevelius in the 17th century. Its name is Latin for "hunting dogs", and the constellation is often depicted in illustrations as representing the dogs of Boötes the...	12.84	465	K4	HAT-P-12b HAT-P-12b HAT-P-12b is an extrasolar planet approximately 465 light years away from Earth, orbiting the 13th magnitude K-type star HAT-P-12, which is located in Canes Venatici constellation. It is a transiting hot Jupiter that was discovered by the HATNet Project on April 29, 2009....	0.211	0.959	3.2130598	0.0384	0	89.0	2009
GSC 3416-00543 HAT-P-13 HAT-P-13, also known as GSC 03416-00543, is a G-type main sequence star approximately 697 light-years away in the constellation Ursa Major. In 2009 it was discovered that this star is orbited by two massive planets, the innermost of which transits the star...	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	10.429	698	G4	HAT-P-13b HAT-P-13b HAT-P-13b is an extrasolar planet approximately 697 light-years away in the constellation Ursa Major. The planet was discovered when it transited across its sun, HAT-P-13. This planet is a hot Jupiter with 0.851 times the mass of Jupiter and 1.28 radius. The planet has a lower mass, but its overall...	0.851	1.28	2.9162595	0.0426	0.021	83.4	2009
GSC 3416-00543 HAT-P-13 HAT-P-13, also known as GSC 03416-00543, is a G-type main sequence star approximately 697 light-years away in the constellation Ursa Major. In 2009 it was discovered that this star is orbited by two massive planets, the innermost of which transits the star...	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	10.429	698	G4	HAT-P-13c HAT-P-13c HAT-P-13c is a substellar object orbiting the star HAT-P-13 located 698 light years away from Earth in the constellation of Ursa Major. With a mass at least 15.2 times that of Jupiter, it may be a massive planet or a small brown dwarf...	>15.2		428.5	1.186	0.691		2009
GSC 3086-00152	Hercules Hercules Hercules is the Roman name for Greek demigod Heracles, son of Zeus , and the mortal Alcmene...	9.98	670	F	HAT-P-14b HAT-P-14b HAT-P-14b is an extrasolar planet orbiting the star HAT-P-14. This planet was discovered by the transit method and submitted for publication on March 10, 2010....	1.386	1.468	4.6267669	0.0606	0.107	83.5	2010
GSC 2883-01687	Perseus Perseus (constellation) Perseus is a constellation in the northern sky, named after the Greek hero Perseus. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations defined by the International Astronomical Union...	12.16	190	G5	HAT-P-15 b	1.946	1.072	10.863502	0.0964	0.19	89.1	2010
GSC 2792-01700	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	10.8	235	F8	HAT-P-16 b	4.193	1.289	2.77596	0.0413	0.036	86.6	2010
HAT-P-17 HAT-P-17 HAT-P-17 is a K type star about 90 ± 3 pc away. It has a mass of about 0.857 ± 0.039 M☉. It is the host of two planets, HAT-P-17b and HAT-P-17c, both discovered in 2010.- References :*...	Cygnus Cygnus (constellation) Cygnus is a northern constellation lying on the plane of the Milky Way. Its name is the Latinized Hellenic word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross...	10.54	293.5	K	HAT-P-17 b	0.53	1.01	10.338523	0.0882	0.346	89.2	2010
HAT-P-17 HAT-P-17 HAT-P-17 is a K type star about 90 ± 3 pc away. It has a mass of about 0.857 ± 0.039 M☉. It is the host of two planets, HAT-P-17b and HAT-P-17c, both discovered in 2010.- References :*...	Cygnus Cygnus (constellation) Cygnus is a northern constellation lying on the plane of the Milky Way. Its name is the Latinized Hellenic word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross...	10.54	293.5	K	HAT-P-17 c	1.4		1797	2.75	0.1		2010
HAT-P-18	Hercules Hercules Hercules is the Roman name for Greek demigod Heracles, son of Zeus , and the mortal Alcmene...	12.76	541	K	HAT-P-18 b	0.197	0.995	5.508023	0.0559	0.084	88.8	2010	The Extrasolar Planets Encyclopaedia
HAT-P-19	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	12.9	701	K	HAT-P-19 b	0.292	1.132	4.008778	0.0466	0.067	88.2	2010	The Extrasolar Planets Encyclopaedia
HAT-P-20	Gemini Gemini (constellation) Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations today. Its name is Latin for "twins", and it is associated with the twins Castor and Pollux in Greek mythology...	11.34	228	K7	HAT-P-20 b	7.246	0.867	2.875317	0.0361	0.015	86.8	2010	The Extrasolar Planets Encyclopaedia
HAT-P-21	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	11.46	228	G3	HAT-P-21 b	4.063	1.024	4.124461	0.0494	0.228	87.2	2010	The Extrasolar Planets Encyclopaedia
HAT-P-22	Ursa Major Ursa Major Ursa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...	9.73	267	G5	HAT-P-22 b	2.147	1.08	3.21222	0.0414	0.016	86.9	2010	The Extrasolar Planets Encyclopaedia
HAT-P-23	Delphinus Delphinus Delphinus is a constellation in the northern sky, close to the celestial equator. Its name is Latin for dolphin. Delphinus was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains among the 88 modern constellations recognized by the International Astronomical...	11.94	1282	G5	HAT-P-23 b	2.09	1.368	1.212884	0.0232	0.106	85.1	2010	The Extrasolar Planets Encyclopaedia
HAT-P-24 HAT-P-24 HAT-P-24 is an F8 dwarf star about 405 pc away. However, some sources indicate that the star is about 306 ±20 pc away. It has a planet HAT-P-24b, which is a hot Jupiter...	Gemini Gemini (constellation) Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations today. Its name is Latin for "twins", and it is associated with the twins Castor and Pollux in Greek mythology...	11.818	998	F8	HAT-P-24 b	0.681	1.243	3.3552464	0.0465	0.067	88.6	2010
HAT-P-25	Aries Aries (constellation) Aries is one of the constellations of the zodiac, located between Pisces to the west and Taurus to the east. Its name is Latin for ram, and its symbol is , representing a ram's horns...	13.19	969	G5	HAT-P-25 b	0.567	1.19	3.652836	0.0466	0.032	87.6	2010
HAT-P-26	Virgo Virgo (constellation) Virgo is one of the constellations of the zodiac. Its name is Latin for virgin, and its symbol is . Lying between Leo to the west and Libra to the east, it is the second largest constellation in the sky...	11.74	437	K1	HAT-P-26 b	0.059	0.565	4.234516	0.0479	0.124	88.6	2010	The Extrasolar Planets Encyclopaedia
WASP-40/HAT-P-27	Virgo Virgo (constellation) Virgo is one of the constellations of the zodiac. Its name is Latin for virgin, and its symbol is . Lying between Leo to the west and Libra to the east, it is the second largest constellation in the sky...	12.21	665	G8	WASP-40b/HAT-P-27b	0.66	1.038	3.039586	0.0403	0.078	84.7	2011	The Extrasolar Planets Encyclopaedia
HAT-P-28	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	13.03	1288	G3	HAT-P-28 b	0.626	1.212	3.257215	0.0434	0.051	88	2011	The Extrasolar Planets Encyclopaedia
HAT-P-29	Perseus Perseus (constellation) Perseus is a constellation in the northern sky, named after the Greek hero Perseus. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations defined by the International Astronomical Union...	11.9	1050	F8	HAT-P-29 b	0.778	1.107	5.72318	0.0667	0.095	87.1	2011	The Extrasolar Planets Encyclopaedia
WASP-51/HAT-P-30	Draco Draco (constellation) Draco is a constellation in the far northern sky. Its name is Latin for dragon. Draco is circumpolar for many observers in the northern hemisphere...	10.42	629	F	WASP-51b/HAT-P-30b	0.711	1.34	2.810595	0.0419	0.035	83.6	2011	The Extrasolar Planets Encyclopaedia
HAT-P-31	Cancer Cancer (constellation) Cancer is one of the twelve constellations of the zodiac. Its name is Latin for crab and it is commonly represented as such. Its symbol is . Cancer is small and its stars are faint...	11.66	1155		HAT-P-31 b	2.171	1.07	5.005425	0.055	0.245	87.1	2011	The Extrasolar Planets Encyclopaedia
HAT-P-32	Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	11.29	1044	F/G	HAT-P-32 b	0.941	2.037	2.150009	0.0344	0.163	88.7	2011	The Extrasolar Planets Encyclopaedia
HAT-P-33	Gemini Gemini (constellation) Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations today. Its name is Latin for "twins", and it is associated with the twins Castor and Pollux in Greek mythology...	11.89	1367	F	HAT-P-33 b	0.763	1.827	3.474474	0.0503	0.148	86.7	2011	The Extrasolar Planets Encyclopaedia

External links

The source of this article is wikipedia, the free encyclopedia. The text of this article is licensed under the GFDL.

Equipment

HAT-South

Participants in the project

Planets discovered

See also

Other extrasolar planet search projects

Extrasolar planet searching spacecraft

External links