(84522) 2002 TC302

(84522) 2002 TC302

Infobox Planet
bgcolour=#FFFFC0
name=mp|(84522) 2002 TC|302
discovery=yes
discovery_ref=cite web
title=Discovery Circumstances: Numbered Minor Planets (80001)-(85000)
publisher=IAU: Minor Planet Center
url=http://www.cfa.harvard.edu/iau/lists/NumberedMPs080001.html
accessdate=2008-07-23
]
discoverer=NEAT@Palomar
discovered= October 9, 2002
mp_name=mp|(84522) 2002 TC|302
alt_names="none"
mp_category= TNO (SDO)cite web
title=List Of Centaurs and Scattered-Disk Objects
publisher=Minor Planet Center
url=http://cfa-www.harvard.edu/iau/lists/Centaurs.html
accessdate=2008-09-19
]
cite web
author=Marc W. Buie
date=2007/09/16
title=Orbit Fit and Astrometric record for 84522
publisher=SwRI (Space Science Department)
url=http://www.boulder.swri.edu/~buie/kbo/astrom/84522.html
accessdate=2008-09-19
]
epoch=December 31, 2006 (JD 2 454 100.5)
semimajor=8 231.011 Gm (55.021 AU)
perihelion=5 843.055 Gm (39.058 AU)
aphelion=10 618.967 Gm (70.983 AU)
eccentricity=0.290
period=149 069.948 d (408.13 a)
inclination=35.109°
asc_node=23.874°
arg_peri=87.222°
mean_anomaly=313.636°
avg_speed=3.93 km/s
physical_characteristics=yes
dimensions= 1150 ± 325 kmcite 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=2007-12-01]
<1211 km
mass=(0.78–18)e|20? kg
density=2.0? g/cm³
surface_grav=0.12–0.33? m/s²
escape_velocity=0.22–0.63? km/s
sidereal_day=? d
spectral_type= (red) B-V=1.03; V-R=0.67 [cite web|url=http://www.physics.nau.edu/~tegler/research/survey.htm |title=Kuiper Belt Object Magnitudes and Surface Colors |accessdate=2006-11-05 |last=Tegler |first=Stephen C. |coauthors= |date=2006-01-26]
magnitude = 20.5
abs_magnitude= 3.85
albedo=0.02&ndash;0.06
>0.051cite web|url=http://arxiv.org/abs/astro-ph/0502229 |title=Diverse albedos of small trans-neptunian objects |accessdate=2006-11-07 |last=Grundy |first=W. M. |coauthors=Noll, K. S.; Stephens, D. C. |date=2004 | journal=Icarus, | volume=176 | pages=22]
temperature=<~38 K

mp|(84522) 2002 TC|302 is a large red 2:5 resonant Trans-Neptunian object discovered on October 9, 2002 by the NEAT program at the Palomar Observatory.List of classified orbits [http://www.cfa.harvard.edu/iau/mpec/K06/K06P22.html from MPC] ]

Orbit

Orbiting the sun at a distance of 39.058 to 70.983 AU. Due to the resonance, it completes 2 orbits for every 5 orbits of Neptune. Given the long orbit that TNOs have around the sun, 2002 TC302 comes to opposition in late October of each year at an apparent magnitude of 20.5.

urface

The red spectra suggests that mp|2002 TC|302 has very little ice on its surface and explains why it has a lower than average albedo.

References

ee also

*Minor planet
*Trans-Neptunian object
*Scattered disc

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002TC302;orb=1;view=Far Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2002TC302 Ephemeris]


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