Discovery | |
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Discovered by | Palomar Observatory team |
Discovery site | Palomar Observatory |
Discovery date | 30 July 2008 (first observation) |
Designations | |
MPC designation | (470599) 2008 OG19 |
Alternative designations | 2008 OG19 |
Minor planet category | scattered disc |
Orbital characteristics | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 3 · 1(?) | |
Observation arc | 2596 days (7.11 yr) |
Aphelion | 94.004 AU (14.0628 Tm) |
Perihelion | 38.576 AU (5.7709 Tm) |
Semi-major axis | 66.290 AU (9.9168 Tm) |
Eccentricity | 0.41807 |
Orbital period (sidereal) | 539.73 yr (197137 d) |
Mean anomaly | 1.5681° |
Mean motion | 0° 0 6.574 /day |
Inclination | 13.167° |
Longitude of ascending node | 164.02° |
Argument of perihelion | 140.53° |
Physical characteristics | |
Dimensions | 619+56 −113 km (assuming albedo of 0.081) 394+57 −63 km (assuming albedo of 0.199) |
Mean density | 0.609±0.004 g/cm 0.544+0.042 −0.004 g/cm (minimum) |
Sidereal rotation period | 8.727±0.003 h |
Geometric albedo | 0.081 (assumed as typical SDO albedo) 0.199 (assumed) |
Spectral type | V–R=0.64 |
Absolute magnitude (H) | 4.39±0.07 (R-band) 4.89 |
(470599) 2008 OG19 (provisional designation 2008 OG19) is a trans-Neptunian object located in the scattered disc. It was discovered on 30 July 2008 through the Palomar Observatory. 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/cm and aspect ratios of b/a = 0.513 and c/a = 0.39.
References
- ^ "JPL Small-Body Database Browser: 470599 (2008 OG19)" (2015-09-08 last obs.). Jet Propulsion Laboratory. Retrieved 1 August 2017.
- ^ "470599 (2008 OG19)". Minor Planet Center. Retrieved 7 June 2023.
- ^ Fernández-Valenzuela, Estela; Ortiz, Jose Luis; Duffard, René (2015). "2008 OG19: A highly elongated Trans-Neptunian Object". Monthly Notices of the Royal Astronomical Society. 456 (3): 2354–2360. arXiv:1511.06584. Bibcode:2016MNRAS.456.2354F. doi:10.1093/mnras/stv2739. S2CID 73720001.
- "List of Known Trans-Neptunian objects". JohnstonsArchive. Retrieved 12 April 2015.
External links
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