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Discovery
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| Discovered by | Palomar |
| Discovery date | 12 August 2004 |
| Aphelion | 58.684 AU |
| Perihelion | 35.483 AU |
| Eccentricity | 0.246 |
| Orbital period | 323.1 years |
| Inclination | 38.146 ° |
| Longitude of ascending node | 328.56 ° |
| Argument of perihelion | 131.96 ° |
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Physical characteristics
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| Dimensions | 420–940 [2] 383[3] km |
| Apparent magnitude | 19.84 [4] |
| Absolute magnitude (H) | 4.0 [1] |
2004 XA192 is a large member of the Kuiper belt with an absolute magnitude of 4. An absolute magnitude 4 means the diameter of the object is between 400 and 950 km, so it is very likely a dwarf planet.[2] It was discovered on 12 December 2004 at Palomar Observatory.
It is currently at 35.8 AU from the Sun, near the perihelion.[5]
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