List of stars in Equuleus
Encyclopedia
This is the list of notable star
s in the constellation
Equuleus
, sorted by decreasing brightness.
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...
s in the 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....
Equuleus
Equuleus
Equuleus is a constellation. Its name is Latin for 'little horse', a foal. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is the second smallest of the modern constellations , spanning only 72 square degrees...
, sorted by decreasing brightness.
Name | B Bayer designation A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name... |
F Flamsteed designation Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek letters. Each star is assigned a number and the Latin genitive of the constellation it lies in... |
HD Henry Draper Catalogue The Henry Draper Catalogue is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension , published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the... |
HIP | RA Right ascension Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:... |
Dec Declination In astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and... |
vis. 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... |
abs. mag. Absolute magnitude Absolute magnitude is the measure of a celestial object's intrinsic brightness. it is also the apparent magnitude a star would have if it were 32.6 light years away from Earth... |
Dist. (ly) | Sp. class 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... |
Notes |
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α Equ Alpha Equulei Alpha Equulei is a star in the constellation Equuleus. It has the traditional name Kitalpha , a contraction of the Arabic name قطعة الفرس "a piece of the horse".... |
α | 8 | 202447 | 104987 | 3.92 | 0.14 | 186 | G0III+... | Kitalpha, Kitel Phard, Kitalphar; spectroscopic binary | ||
δ Equ Delta Equulei Delta Equulei is the second brightest star in the constellation Equuleus. Delta Equulei is a binary star system about 60 light years away, with components of class G0 and F5. Their combined magnitude is 4.47, and their absolute magnitude is 3.142. There is controversy as to the exact masses of the... |
δ | 7 | 202275 | 104858 | 4.47 | 3.14 | 60 | F5V+... | spectroscopic binary | ||
γ Equ | γ | 5 | 201601 | 104521 | 4.70 | 1.97 | 115 | F0p | double star Double star In observational astronomy, a double star is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope. This can happen either because the pair forms a binary star, i.e... ; variable 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... ; α2 CVn variable |
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β Equ Beta Equulei Beta Equulei is an A-type main sequence star in the constellation of Equuleus. It has an overall apparent visual magnitude of approximately 5.159.... |
β | 10 | 203562 | 105570 | 5.16 | −0.05 | 360 | A3V | multiple star | ||
ε Equ | ε | 1 | 199766 | 103569 | 5.30 | 1.40 | 197 | F5III... | spectroscopic binary | ||
3 Equ | 3 | 200644 | 104031 | 5.63 | −0.99 | 688 | K5III | double star | |||
9 Equ | 9 | 203291 | 105413 | 5.81 | −1.75 | 1058 | M2III | variable | |||
4 Equ | 4 | 200790 | 104101 | 5.94 | 3.10 | 120 | F8V | double star | |||
202951 | 105224 | 5.97 | −1.96 | 1254 | K5III | variable | |||||
5 G. Equ | 199942 | 103652 | 5.98 | 1.69 | 235 | A7V | double star | ||||
6 Equ | 6 | 201616 | 104538 | 6.07 | 0.24 | 479 | A2Vs | optical double Double star In observational astronomy, a double star is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope. This can happen either because the pair forms a binary star, i.e... with γ Equ |
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12 G. Equ | 201298 | 104357 | 6.14 | −0.89 | 832 | K5III | |||||
30 G. Equ | 203842 | 105695 | 6.33 | 1.21 | 344 | F5III | |||||
7 G. Equ | 200661 | 104041 | 6.41 | 0.97 | 400 | K0 | |||||
13 G. Equ | 201507 | 104481 | 6.44 | 1.63 | 299 | F5IV | |||||
10 G. Equ | 200964 | 104202 | 6.64 | 2.35 | 223 | K0IV | has two planets Extrasolar planet An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars... (b & c) |
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λ Equ | λ | 2 | 200256 | 103813 | 6.72 | 1.68 | 332 | F8 | double star | ||