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(35671) 1998 Sn165

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(35671) 1998 Sn165

(35671) 1998 SN165
Discovery
Discovered by A. Gleason
Discovery date September 23, 1998
Designations
MPC designation (35671) 1998 SN165
Alternative names none
Minor planet category TNO[1][2]
Cubewano[1]
Orbital characteristics[1][3]
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°
Physical characteristics
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. However, 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 is a possible dwarf planet.[7] Mike Brown's website lists it as a probable dwarf planet due to its measured diameter.[8]

References

External links

  • Ephemeris
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