Minorplanet: | yes |
Background: |
|
Discovered: | 17 May 2002 |
Mp Category: | TNO cubewano plutino-like |
Orbit Ref: | [1] [2] |
Earliest Precovery Date: | 31 May 1984 |
Epoch: | 13 January 2016 (JD 2457400.5) |
Semimajor: | 38.867AU |
Perihelion: | 37.244AU |
Time Periastron: | ≈ 30 May 2085[3] ±13 days |
Aphelion: | 40.491abbr=onNaNabbr=on |
Eccentricity: | 0.041762 |
Period: | 242.32 yr (88506.6 d) |
Inclination: | 0.40348° |
Asc Node: | 286.686° |
Arg Peri: | 71.686° |
Dimensions: | ×[4] |
Mean Diameter: | (chord) |
Magnitude: | 20.4 (opposition)[5] [6] |
Abs Magnitude: | , 4.6 |
Mean Motion: | / day |
Observation Arc: | 10192 days (27.90 yr) |
Uncertainty: | 3 |
Moid: | 36.2388AU |
Jupiter Moid: | 32.2786AU |
(provisional designation ) is a medium-sized trans-Neptunian object (TNO) residing within the Kuiper belt. It was discovered on 17 May 2002 by Michael E. Brown and Chad Trujillo.[1]
It has a semi-major axis, orbital period and orbital eccentricity close to that of a plutino.[7] The orbital periods of plutinos cluster around 247.2 years (1.5 times Neptune's orbital period), close to 's orbital period. However, is not a plutino, as it is not actually in a resonance with Neptune, and it may have formed near its present nearly circular orbit lying almost perfectly on the ecliptic. This TNO may have remained dynamically cold since its formation, and thus its orbit may not have been a direct result of significant perturbations from Neptune during its migration to the outer solar system. The Deep Ecliptic Survey (DES) currently classifies it as a cubewano (classical) based on a 10-million-year integration of the orbit.[2]
comes to opposition in late May at an apparent magnitude of 20.4.[5] [6] This makes it about 360 times fainter than Pluto.[8]