, provisionally known

Provisional designation in astronomy

Provisional designation in astronomy is the naming convention applied to astronomical objects immediately following their discovery. The provisional designation is usually superseded by a permanent designation once a reliable orbit has been calculated...

 as 2005 TB₁₉₀, is a trans-Neptunian object

Trans-Neptunian object

A trans-Neptunian object is any minor planet in the Solar System that orbits the Sun at a greater distance on average than Neptune.The first trans-Neptunian object to be discovered was Pluto in 1930...

 (TNO) with an absolute magnitude

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...

 of 4.7. This qualifies it as a dwarf-planet candidate.

Orbit

is classified as scattered-extended

Detached object (astronomy)

Detached objects are a dynamical class of bodies in the outer Solar System beyond the orbit of Neptune. These objects have orbits whose points of closest approach to the Sun are sufficiently distant from the gravitational influence of Neptune that they are essentially unaffected by Neptune and the...

 by the Deep Ecliptic Survey

Deep Ecliptic Survey

The Deep Ecliptic Survey is a project to find Kuiper belt objects , using the facilities of the National Optical Astronomy Observatory .The principal investigator is Bob Millis....

 (DES) since its orbit appears to be beyond significant gravitational interactions

Perturbation (astronomy)

Perturbation is a term used in astronomy in connection with descriptions of the complex motion of a massive body which is subject to appreciable gravitational effects from more than one other massive body....

 with Neptune

Neptune

Neptune is the eighth and farthest planet from the Sun in the Solar System. Named for the Roman god of the sea, it is the fourth-largest planet by diameter and the third largest by mass. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times...

's current orbit. Though if Neptune migrated outward, there would have been a period when Neptune had a higher eccentricity. The aphelion of 2005 TB190 lies beyond 106 AU.

Simulations by Emel’yanenko and Kiseleva in 2007 show that appears to have less than a 1% chance of being in a 4:1 resonance

Resonant trans-Neptunian object

In astronomy, a resonant trans-Neptunian object is a trans-Neptunian object in mean motion orbital resonance with Neptune. The orbital periods of the resonant objects are in a simple integer relations with the period of Neptune e.g. 1:2, 2:3 etc...

 with Neptune.

It has been observed 156 times over 7 oppositions. It will come to perihelion

Apsis

An apsis , plural apsides , is the point of greatest or least distance of a body from one of the foci of its elliptical orbit. In modern celestial mechanics this focus is also the center of attraction, which is usually the center of mass of the system...

 in January 2017.

Physical properties

In 2010 thermal flux from 2005 TB190 in the far-infrared was measured by the Herschel Space Telescope. As a result its size was estimated to lie within a range from 335 to 410 km.

In the visible light 2005 TB190 has a moderately red spectral slope.

External links

• Orbital simulation from JPL (Java) / Horizons Ephemeris