(470599) 2008 OG19

Trans-Neptunian object yes (470599) 2008 OG 19 #C2E0FF 2008 OG19 Hubble.png 2008 OG 19 photographed by the Hubble Space Telescope on 21 May 2026 Palomar Observatory team 30 July 2008(first observation) Palomar Observatory (470599) 2008 OG 19 scattered disc 13 January 2016 (JD 2457400.5) 31(?) 2596 days (7.11 yr) 94.004 AU Tm on on 38.576 AU Tm on 66.290 AU Tm on 0.41807 539.73 yr (197137 d) 13.167° 164.02° 1.5681° 140.53° 0 619 +56 -113 km (assuming albedo of 0.081)394 +57 -63 km (assuming albedo of 0.199) 0.609 0.004 g/cm30.544 0.042 0.004 g/cm3 (minimum) 8.727 0.003 h 0.081 (assumed as typical SDO albedo)0.199 (assumed) V–R=0.64 4.39 0.07 (R-band)4.83 0.0018261 ms /day (470599) 2008 OG 19 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/cm3 and aspect ratios of b/a = 0.513 and c/a = 0.39. The Hubble Space Telescope photographed 2008 OG 19 on 21 May 2026, during a search for moons around large trans-Neptunian objects. Orbit and classification 2008 OG 19 orbits the Sun at a distance of 38.6–94.0 AU once every 539.7 years (197,137 days). Its orbit has a moderate eccentricity of 0.418 and an inclination of 13.2° relative to the ecliptic. The object is classified as a trans-Neptunian object, specifically a scattered disc object (SDO). While its perihelion (closest approach to the Sun) of 38.5 AU keeps it well outside the direct orbit of Neptune (which orbits at roughly 30 AU), its high eccentricity and semi-major axis of 66.2 AU are characteristic of bodies whose orbits were dynamically scattered by the ice giants into the outer reaches of the Solar System. With an absolute magnitude of 4.8, it is considered a relatively large trans-Neptunian object, though it has not been observed to share any mean-motion resonances with Neptune. References Fernández-Valenzuela E. Ortiz J. L. Duffard R. Morales N. Santos-Sanz P. March 2016 2008 OG19: a highly elongated Trans-Neptunian object Monthly Notices of the Royal Astronomical Society 456 3 2354–2361 10.1093/mnras/stv2739 free 1511.06584 JPL Small-Body Database Browser: 470599 (2008 OG19) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=20470599 Jet Propulsion Laboratory 10 September 2026 470599 (2008 OG19) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=470599 7 June 2023 http://www.johnstonsarchive.net/astro/tnoslist.html List of Known Trans-Neptunian objects JohnstonsArchive 12 April 2015 Fernández-Valenzuela Estela Ortiz Jose Luis Duffard René 2008 OG19: A highly elongated Trans-Neptunian Object Monthly Notices of the Royal Astronomical Society 456 3 2354–2360 2015 10.1093/mnras/stv2739 free 1511.06584 2016MNRAS.456.2354F 73720001 A Search For The Moons of Mid-Sized TNOs https://www.stsci.edu/hst-program-info/download/hst/pdf/18010/ Benjamin Proudfoot Mikulski Archive for Space Telescopes Space Telescope Science Institute August 2025 HST Proposal 18010 Cycle 33 2025-08-17 List Of Transneptunian Objects https://minorplanetcenter.net Minor Planet Center 10 September 2026 External links 2470599 470599 (470599) 2008 OG 19 Category:Scattered disc and detached objects Category:Discoveries by the Palomar Observatory 20080730