(470599) 2008 OG19
Trans-Neptunian object
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(470599) 2008 OG19 (provisional designation 2008 OG19) is a trans-Neptunian object located in the scattered disc.[4] It was discovered on 30 July 2008 through the Palomar Observatory.[2] It displays a large light curve amplitude of 0.437±0.011 magnitudes, implying that it is highly elongated in shape, similar to 20000 Varuna. Based on models for its light curve amplitude, they obtained an approximate density of 0.609 g/cm3 and aspect ratios of b/a = 0.513 and c/a = 0.39.[3]
(first observation)
| Discovery | |
|---|---|
| Discovered by | Palomar Observatory team |
| Discovery site | Palomar Observatory |
| Discovery date | 30 July 2008 (first observation) |
| Designations | |
| (470599) 2008 OG19 | |
| 2008 OG19 | |
| scattered disc | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 · 1(?)[2] | |
| Observation arc | 2596 days (7.11 yr) |
| Aphelion | 94.004 AU (14.0628 Tm) |
| Perihelion | 38.576 AU (5.7709 Tm) |
| 66.290 AU (9.9168 Tm) | |
| Eccentricity | 0.41807 |
| 539.73 yr (197137 d)[1] | |
| 1.5681° | |
| 0° 0m 6.574s /day | |
| Inclination | 13.167° |
| 164.02° | |
| 140.53° | |
| Known satellites | 0 |
| Physical characteristics | |
| Dimensions | 619+56 â113 km (assuming albedo of 0.081)[3] 394+57 â63 km (assuming albedo of 0.199)[3] |
Mean density | 0.609±0.004 g/cm3[3] 0.544+0.042 â0.004 g/cm3 (minimum)[3] |
| 8.727±0.003 h[3] | |
| 0.081 (assumed as typical SDO albedo)[3] 0.199 (assumed)[3] | |
| VâR=0.64[3] | |
| 4.39±0.07 (R-band)[3] 4.83[2] | |
2008 OG19 has not yet been imaged by high-resolution telescopes, so it has no known moons. The Hubble Space Telescope is planned to image it in 2026, which should determine if it has significantly sized moons.[5]
