(35671) 1998 SN165
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Discovery
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|---|---|
| Discovered by | A. Gleason |
| Discovery date | September 23, 1998 |
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Designations
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| MPC designation | (35671) 1998 SN165 |
| Alternate name(s) | none |
| Minor planet category |
TNO[1][2] Cubewano[1] |
| Aphelion | 39.380 AU |
| Perihelion | 36.288 AU |
| Semi-major axis | 37.834 AU |
| Eccentricity | 0.041 |
| Orbital period | 233.66 yr |
| Mean anomaly | 271.1° |
| Inclination | 4.6° |
| Longitude of ascending node | 192.1° |
| Argument of perihelion | 266.5° |
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Physical characteristics
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| Dimensions | 460±80[4][5] km |
| Albedo | 0.04[4] |
| Apparent magnitude | 21.4 |
| Absolute magnitude (H) | 5.8[3] |
(35671) 1998 SN165, also written as (35671) 1998 SN165, is a trans-Neptunian object. It was discovered on September 23, 1998 by A. Gleason at Steward Observatory.
It was originally classified as a plutino with a 2:3 mean motion resonance with Neptune. In August 2001 it was still the largest Plutino, other than Pluto and Charon, so far identified.[6] But later plutino discoveries, such as 38628 Huya,[5] 28978 Ixion, and 90482 Orcus are larger. It is no longer classified as a plutino.[1][2][5]
With a low albedo of 0.04[4] and an absolute magnitude of 5.8,[3] 1998 SN165 has the dimmest absolute magnitude that may qualify as a plutoid candidate.[7] Mike Brown's automatically updated website lists it as a probable dwarf planet with a measured diameter.[8]
[edit] References
- ^ a b c d Marc W. Buie (2004-10-10). "Orbit Fit and Astrometric record for 35671". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/35671.html. Retrieved 2008-07-17.
- ^ a b "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 2006-12-21. Archived from the original on 28 August 2008. http://web.archive.org/web/20080828191100/http://cfa-www.harvard.edu/iau/mpec/K06/K06X45.html. Retrieved 2008-07-18.
- ^ a b c "JPL Small-Body Database Browser: 35671 (1998 SN165)". 2004-10-10 last obs. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=35671. Retrieved 2008-07-17.
- ^ a b c John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". arXiv:astro-ph/0702538 [astro-ph].
- ^ a b c Wm. Robert Johnston (22 April 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 16 October 2007. http://web.archive.org/web/20071016230529/http://johnstonsarchive.net/astro/tnoslist.html. Retrieved 2007-10-17.
- ^ Hutton, Gil (08/2001). "VR Photometry of Sixteen Kuiper Belt Objects". Icarus, Volume 152, Issue 2, pp. 246–250 (2001). http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?bibcode=2001Icar..152..246G&db_key=AST&high=3bf56b65cd20774. Retrieved 2007-10-17.
- ^ Dan Bruton. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Department of Physics & Astronomy (Stephen F. Austin State University). http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html. Retrieved 2008-07-25.
- ^ 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 2011-08-25.
[edit] External links
- Orbital simulation from JPL (Java) / Ephemeris
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