2006 QH181
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2006 QH181
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Discovery
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|---|---|
| Discovery date | August 21, 2006 |
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Designations
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| MPC designation | 2006 QH181 |
| Minor planet category |
Trans-Neptunian object[1][2] detached?[3] 5:1 resonance?[3] |
| Epoch November 30, 2008 | |
| Aphelion | 97.02 AU (Q) |
| Perihelion | 37.60 AU (q) |
| Semi-major axis | 67.3 AU (a) |
| Eccentricity | 0.441 |
| Orbital period | 552.29 a |
| Mean anomaly | 97.26° (M) |
| Inclination | 19.26° |
| Longitude of ascending node | 73.77° |
| Argument of perihelion | 211° |
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Physical characteristics
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| Dimensions | 460–1030 km[4][5] 765 km (assumed)[6] |
| Albedo | 0.09? (assumed) |
| Apparent magnitude | 23.0[7] |
| Absolute magnitude (H) | 3.8[4] |
2006 QH181, also written as 2006 QH181, is a trans-Neptunian object. It is very likely a dwarf planet.[8] It is part of the scattered disc.[2] It may be a detached object since a perihelion of 37.6 AU may place it outside of the direct influence of Neptune, or it could have a 5:1 resonance with Neptune.[3] Further observations of the orbit will be required.
| Object | Distance in (AU) |
APmag |
|---|---|---|
| Eris | 96.6 | 18.7 |
| Sedna | 87.0 | 21.0 |
| 2007 OR10 | 86.5 | 21.4 |
| 2006 QH181 | 82.7 | 23.0 |
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Contents
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Distance
It came to perihelion around 1859.[4] It is currently 82.7 AU from the Sun.[7][9] The only dwarf-planet-type bodies currently further from the Sun are Eris (96.6AU)[10], Sedna (87.0AU)[11], and 2007 OR10 (86.5AU)[12]. Being so far from the Sun, it only has an apparent magnitude of 23.[7]
Orbit
It has been observed 10 times over only 2 oppositions and thus currently has a poorly known orbit. JPL ranks orbital quality from 0 to 9 (0 being best), and 2006 QH181 is currently listed with a poor orbital quality of 8.[4] If the quality of the known orbit were any worse, the uncertainty parameter U would be listed as E for "eccentricity was assumed".
References
- ^ "MPEC 2008-O05 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 2008-07-17. http://cfa-www.harvard.edu/iau/mpec/K08/K08O05.html. Retrieved 2008-07-29.
- ^ a b "List Of Centaurs and Scattered-Disk Objects". MPC. http://www.minorplanetcenter.org/iau/lists/Centaurs.html. Retrieved 2007-03-03.
- ^ a b c Marc W. Buie (2008-03-05). "Orbit Fit and Astrometric record for 06QH181". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/06QH181.html. Retrieved 2008-07-29.
- ^ a b c d e "JPL Small-Body Database Browser: (2006 QH181)". 2008-03-05 last obs. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006QH181. Retrieved 2008-07-23.
- ^ "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 1 September 2008. http://neo.jpl.nasa.gov/glossary/h.html. Retrieved 2008-07-29.
- ^ Wm. Robert Johnston. "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 18 February 2007. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 2007-03-03.
- ^ a b c "AstDys 2006QH181 Ephemerides". Department of Mathematics, University of Pisa, Italy. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=2006QH181. Retrieved 2009-03-16.
- ^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. http://www.gps.caltech.edu/~mbrown/dps.html. Retrieved 2012-01-31.
- ^ "Horizon Online Ephemeris System". California Institute of Technology, Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2006QH181. Retrieved 2009-01-22.
- ^ "AstDys (136199) Eris Ephemerides". Department of Mathematics, University of Pisa, Italy. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=Eris. Retrieved 2012-01-31.
- ^ "AstDys (90377) Sedna Ephemerides". Department of Mathematics, University of Pisa, Italy. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=Sedna. Retrieved 2012-01-31.
- ^ "AstDys 2007OR10 Ephemerides". Department of Mathematics, University of Pisa, Italy. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=2007OR10. Retrieved 2012-01-31.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
See also
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