astro.wikisort.org - Asteroid
(471288) 2011 GM27 is a trans-Neptunian object (TNO) in the Kuiper belt, classified as a hot classical Kuiper belt object.[2] It was discovered on 2 April 2011, at ESO's La Silla Observatory in Chile.[1] With an absolute magnitude of 5.32,[3] a geometric albedo of between 0.06 to 0.09 (a typical value) would mean it has a diameter of about 450 kilometers (280 mi).[2]
| Discovery[1] | |
|---|---|
| Discovery site | La Silla Obs. (809) |
| Discovery date | 2 April 2011 |
| Designations | |
MPC designation | (471288) 2011 GM27 |
Minor planet category | TNO · cubewano[2] |
| Orbital characteristics[3] | |
| Epoch 1 July 2021 (JD 2459396.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 14.08 yr (5,141 d) |
| Aphelion | 44.638 AU |
| Perihelion | 42.363 AU |
Semi-major axis | 43.500 AU |
| Eccentricity | 0.0261 |
Orbital period (sidereal) | 286.91 yr (104,794 d) |
Mean anomaly | 98.325° |
Mean motion | 0° 0m 12.24s / day |
| Inclination | 13.028° |
Longitude of ascending node | 257.25° |
Argument of perihelion | 194.69° |
| Physical characteristics | |
Mean diameter | 443 km (est.)[2] 460 km (est.)[4] |
Geometric albedo | 0.06 (est.)[4] 0.09 (est.)[2] |
Absolute magnitude (H) | 5.32[3] |
2011 GM27 orbits the Sun at a distance of 42.4–44.6 AU once every 286 years and 11 months (104,794 days; semi-major axis of 43.5 AU). Its orbit has an eccentricity of 0.03 and an inclination of 13° with respect to the ecliptic.[3]
It orbits slightly outside a 3:5 resonance with Neptune, taking 16 years (5.5% of its orbit) longer to orbit the Sun than a body in 3:5 resonance. Precovery observations exist dating back to 2006 in SDSS data.[5]
References
- "471288 (2011 GM27)". Minor Planet Center. Retrieved 18 July 2021.
- Johnston, Wm. Robert (18 August 2020). "Asteroids with Satellites Database – (508869) 2002 VT130". Johnston's Archive. Retrieved 18 July 2021.
- "JPL Small-Body Database Browser: 471288 (2011 GM27)" (2020-02-04 last obs.). Jet Propulsion Laboratory. Retrieved 18 July 2021.
- Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 18 July 2021.
- "On the discovery and precovery of Trans-Neptunian Objects from SDSS images". talk.galaxyzoo.org. pp. 1–2. Retrieved 8 March 2015.
External links
- (471288) 2011 GM27 at the JPL Small-Body Database
- (471288) 2011 GM27 at AstDyS-2, Asteroids—Dynamic Site
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На других языках
[de] (471288) 2011 GM27
(471288) 2011 GM27 ist ein großes transneptunisches Objekt im Kuipergürtel, das bahndynamisch als erweitertes Scattered Disk Object (DO) oder als Cubewano (CKBO) eingestuft wird. Aufgrund seiner Größe ist der Asteroid ein Zwergplanetenkandidat.- [en] (471288) 2011 GM27
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