| 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) |
| Earliestprecovery date | 19 August 1976[1] |
| Aphelion | 61.903AU |
| Perihelion | 37.482 AU |
| 49.692 AU | |
| Eccentricity | 0.2457 |
| 350.30yr (127,948d) | |
| 97.520° | |
| 0° 0m 10.08s / day | |
| Inclination | 30.638° |
| 25.320° | |
| 193.480° | |
| Knownsatellites | 0 |
| Physical characteristics | |
| ≈637 km(estimate)[4] | |
| 0.09(assumed)[4] 0.11(assumed)[6] | |
| 3.81[3] | |
(589683) 2010 RF43 (provisional designation2010 RF43) is a largetrans-Neptunian object orbiting in thescattered disc in the outermost regions of theSolar System. The object was discovered on 9 September 2010, by American astronomersDavid Rabinowitz,Megan Schwamb andSuzanne Tourtellotte at ESO'sLa Silla Observatory in northern Chile.[1]
2010 RF43 has not yet been imaged by high-resolution telescopes, so it has no known moons.[7] TheHubble Space Telescope is planned to image2010 RF43 in 2026, which should determine if it has significantly sized moons.[7]
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 aneccentricity of 0.25 and aninclination of 31° with respect to theecliptic.[3] The body'sobservation arc begins with a precovery observation taken atSiding Spring Observatory in August 1976.[1]
Due to its relatively high eccentricity and inclination, it is an object of thescattered disc rather than one of the regularKuiper belt.[2][8] Itsperihelion of 37.5 AU is also too low to make it adetached object, which typically stay above 40 AU and never come close to the orbit ofNeptune.
Thisminor planet wasnumbered by theMinor Planet Center on 20 September 2021, receiving the number589683 in theminor planet catalog (M.P.C. 135075).[9] As of 2025[update], it has not beennamed.[1]
Johnston's Archive estimates amean diameter of approximately 637 kilometers (396 mi).[4] This number has changed as the reported albedo has changed.
As of 2020, no rotationallightcurve of this object has been obtained fromphotometric observations. The object'srotation period,pole and shape remain unknown.[3]
| Consensus | _(cropped).jpg)  | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Candidate (for TNOs, D+1σ ≥ 700 km or H ≤ 4.0) |
| ||||||||||||
