(26375) 1999 DE9

Infobox Planet
bgcolour=#FFFFC0
name=mp|(26375) 1999 DE|9
discovery=yes
discoverer=Chadwick A. Trujillo and Jane X. Luu
discovered=20 February, 1999
mp_name=mp|(26375) 1999 DE|9
alt_names="none"
mp_category=TNO
cite web
author=Marc W. Buie
date=2008/03/14
title=Orbit Fit and Astrometric record for 26375
publisher=SwRI (Space Science Department)
url=http://www.boulder.swri.edu/~buie/kbo/astrom/26375.html
accessdate=2008-09-24]
epoch=December 31, 2006 (JD 2454100.5)
semimajor=8325.898 Gm (55.655 AU)
perihelion=4835.563 Gm (32.324 AU)
aphelion=11816.233 Gm (78.987 AU)
eccentricity=0.419
period=151655.072 d (415.21 a)
inclination=7.620°
asc_node=322.993°
arg_peri=159.961°
mean_anomaly=17.891°
avg_speed=3.81 km/s
physical_characteristics=yes
dimensions=461 ±45 kmStansberry, Grundy, Brown, Spencer, Trilling, Cruikshank, Luc Margot "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope" (2007) [http://arxiv.org/abs/astro-ph/0702538v1 Preprint arXiv] ]
mass=1.3e|20? kg
density=2.0? g/cm³
gravity=0.1411? m/s²
escape_velocity=0.2670? km/s
sidereal_day=? d
spectral_type=?
abs_magnitude=4.7
albedo=0.06-0.08
single_temperature=~37 K mp|(26375) 1999 DE|9 (also written (26375) 1999 DE9) is an object of the solar system located beyond the orbit of Neptune. It was discovered in 1999 by Chad Trujillo and Jane X. Luu.

It is classified as a resonant as its 417-year orbit is in 2:5 resonance with Neptune's orbit. Spectral analysis has shown traces of ice.

References