(35671) 1998 SN165

Infobox Planet | discovery=yes | physical_characteristics=yes | bgcolour=#FFFFC0
name=mp|(35671) 1998 SN|165
discoverer=A. Gleason
discovered=September 23, 1998
mp_name=mp|(35671) 1998 SN|165
alt_names="none"
mp_category=TNOcite web
date=2006 Dec. 21
title=MPEC 2006-X45 : Distant Minor Planets
publisher=Minor Planet Center & Tamkin Foundation Computer Network
url=http://cfa-www.harvard.edu/iau/mpec/K06/K06X45.html
accessdate=2008-07-18]
Cubewano
orbit_ref = cite web
author=Marc W. Buie
date=2004/10/10
title=Orbit Fit and Astrometric record for 35671
publisher=SwRI (Space Science Department)
url=http://www.boulder.swri.edu/~buie/kbo/astrom/35671.html
accessdate=2008-07-17] cite web
date=2004-10-10 last obs
title=JPL Small-Body Database Browser: 35671 (1998 SN165)
url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=35671
accessdate=2008-07-17]
epoch=
period=233.66 yr
semimajor=37.834 AU
aphelion=39.380 AU
perihelion=36.288 AU
inclination=4.6°
eccentricity=0.041
mean_anomaly=271.1°
arg_peri=266.5°
asc_node=192.1°
avg_speed=
dimensions=460±80cite web
title=Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope
author=John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot
work=University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University
url=http://arxiv.org/abs/astro-ph/0702538v2
year=2007
accessdate=2008-07-25] cite web
date=22 April 2008
title=List of Known Trans-Neptunian Objects
publisher=Johnston's Archive
author=Wm. Robert Johnston
url=http://www.johnstonsarchive.net/astro/tnoslist.html
accessdate=2007-10-17] km
mass=
density=
surface_grav=
escape_velocity=
albedo=0.04
magnitude = 21.4
abs_magnitude=5.8
spectral_type=
sidereal_day=
single_temperature=

mp|(35671) 1998 SN|165, 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. As of August 2001 it was still the largest Plutino, other than Pluto and Charon so far identified.cite web
url = http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?bibcode=2001Icar..152..246G&db_key=AST&high=3bf56b65cd20774
title = VR Photometry of Sixteen Kuiper Belt Objects
accessdate = 2007-10-17
last = Hutton
first = Gil
date = 08/2001
publisher = Icarus, Volume 152, Issue 2, pp. 246-250 (2001)] But later plutino discoveries, such as 38628 Huya, 28978 Ixion. and 90482 Orcus are larger. It is no longer classified as a plutino.

With a low albedo of 0.04 and an absolute magnitude of 5.8, mp|1998 SN|165 has the dimmest absolute magnitude that may qualify as a plutoid candidate.cite web
title=Conversion of Absolute Magnitude to Diameter for Minor Planets
publisher=Department of Physics & Astronomy (Stephen F. Austin State University)
author=Dan Bruton
url=http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html
accessdate=2008-07-25]

References

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998SN165;orb=1;view=Far Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=1998SN165 Ephemeris]