(35671) 1998 SN165

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(35671) 1998 SN165
Discovery
Discovered by A. Gleason
Discovery date September 23, 1998
Designations
MPC designation (35671) 1998 SN165
none
Minor planet category TNO[1][2]
Cubewano[1]
Orbital characteristics[1][3]
Aphelion 39.380 AU
Perihelion 36.288 AU
37.834 AU
Eccentricity 0.041
233.66 yr
271.1°
Inclination 4.6°
192.1°
266.5°
Physical characteristics
Dimensions

393+39
−38
 km
[4]

460±80[5][6] km
8.84 hr[3]
Albedo 0.04[5]
21.4
5.6[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.[7] However, later plutino discoveries, such as 38628 Huya,[6] 28978 Ixion and 90482 Orcus, are larger, so it is no longer classified as a plutino.[1][2][6]

With a low albedo of 0.04[5] and an absolute magnitude of 5.8,[3] 1998 SN165 is a possible dwarf planet.[8] Mike Brown's website lists it as a probable dwarf planet due to its measured diameter.[9] The newest diameter estimate is 393+39
−38
 km
.[4]

References[edit]

  1. ^ a b c d Marc W. Buie (2004-10-10). "Orbit Fit and Astrometric record for 35671". SwRI (Space Science Department). Retrieved 2008-07-17. 
  2. ^ 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. Retrieved 2008-07-18. 
  3. ^ a b c d "JPL Small-Body Database Browser: 35671 (1998 SN165)". 2004-10-10 last obs. Retrieved 2008-07-17.  Check date values in: |date= (help)
  4. ^ a b TNOs are Cool: A survey of the trans-Neptunian region. X. Analysis of classical Kuiper belt objects from Herschel* and Spitzer observations p. 18
  5. ^ 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].
  6. ^ 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. Retrieved 2007-10-17. 
  7. ^ Hutton, Gil (August 2001). "VR Photometry of Sixteen Kuiper Belt Objects". Icarus, Volume 152, Issue 2, pp. 246–250 (2001). Retrieved 2007-10-17. 
  8. ^ Dan Bruton. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Department of Physics & Astronomy (Stephen F. Austin State University). Retrieved 2008-07-25. 
  9. ^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 2011-08-25. 

External links[edit]