(589683) 2010 RF43
| Discovery[1][2] | |
|---|---|
| Discovered by | D. L. Rabinowitz M. Schwamb S. Tourtellotte |
| Discovery site | La Silla Obs. |
| Discovery date | 6 September 2010 |
| Designations | |
| (589683) 2010 RF43 | |
| 2010 RF43 | |
| TNO[3][4] · SDO[5] · distant[1] | |
| Orbital characteristics[3] | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 46.17 yr (~16,860 days) |
| Earliest precovery date | 19 August 1976[1] |
| Aphelion | 61.903 AU |
| Perihelion | 37.482 AU |
| 49.692 AU | |
| Eccentricity | 0.2457 |
| 350.30 yr (127,948 d) | |
| 97.520° | |
| 0° 0m 10.08s / day | |
| Inclination | 30.638° |
| 25.320° | |
| 193.480° | |
| Physical characteristics | |
| 636 km (estimate)[6] 643 km (estimate)[7] ≈770 km (estimate)[4] | |
| 0.09 (assumed)[4] 0.10 (assumed)[6] 0.11 (assumed)[7] | |
| 3.9[3] · 4.0[7] · 4.1[6] | |
(589683) 2010 RF43 (provisional designation 2010 RF43) is a large trans-Neptunian object orbiting in the scattered disc in the outermost regions of the Solar System. The object was discovered on 9 September 2010, by American astronomers David Rabinowitz, Megan Schwamb and Suzanne Tourtellotte at ESO's La Silla Observatory in northern Chile.[1]
Orbit and classification
[edit]2010 RF43 orbits the Sun at a distance of 37.5–61.9 AU once every 350 years and 4 months (127,948 days; semi-major axis of 49.7 AU). Its orbit has an eccentricity of 0.25 and an inclination of 31° with respect to the ecliptic.[3] The body's observation arc begins with a precovery observation taken at Siding Spring Observatory in August 1976.[1]
Due to its relatively high eccentricity and inclination, it is an object of the scattered disc rather than one of the regular Kuiper belt.[2][8] Its perihelion of 37.5 AU is also too low to make it a detached object, which typically stay above 40 AU and never come close to the orbit of Neptune.
Numbering and naming
[edit]This minor planet was numbered by the Minor Planet Center on 20 September 2021, receiving the number (589683) in the minor planet catalog (M.P.C. 135075).[9] As of 2021[update], it has not been named.[1]
Physical characteristics
[edit]Diameter and albedo
[edit]Based on an absolute magnitude of 3.9,[3] and an assumed albedo of 0.09, the Johnston's archive estimates a mean diameter of approximately 770 kilometers (480 mi).[4]
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a diameter of 636 kilometers (395 mi) based on an absolute magnitude of 4.1.[6]
Rotation period
[edit]As of 2020, no rotational lightcurve of this object has been obtained from photometric observations. The object's rotation period, pole and shape remain unknown.[3][6]
References
[edit]- ^ a b c d e f "2010 RF43". Minor Planet Center. Retrieved 27 August 2020.
- ^ a b "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 22 August 2020.
- ^ a b c d e f "JPL Small-Body Database Browser: (2010 RF43)" (2020-08-19 last obs.). Jet Propulsion Laboratory. Retrieved 28 August 2020.
- ^ a b c d Johnston, Wm. Robert (29 August 2021). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 30 September 2021.
- ^ Buie, Marc W. "Orbit Fit and Astrometric record for 10RF43". SwRI (Space Science Department). Archived from the original on 24 February 2018. Retrieved 23 February 2018.
- ^ a b c d e "LCDB Data for (2010+RF43)". Asteroid Lightcurve Database (LCDB). Retrieved 22 August 2020.
- ^ a b c Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 23 February 2018.
- ^ "List Of Transneptunian Objects". Minor Planet Center. Retrieved 22 August 2020.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 September 2021.
External links
[edit]- MPEC 2011-U09 : 2010 RF43, Minor Planet Electronic Circular, 17 October 2011
- (589683) 2010 RF43 at AstDyS-2, Asteroids—Dynamic Site
- (589683) 2010 RF43 at the JPL Small-Body Database
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