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90482 Orcus (2004 DW)
Classification: TransNeptunian Object          SPK-ID: 2090482
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .218430021323487 2.2833e-05  
a 39.45974796563077 0.0013217 AU
q 30.84055437607861 0.0019314 AU
i 20.55200908658715 7.4012e-05 deg
node 268.4816085757602 0.00036103 deg
peri 73.3951584226794 0.0047446 deg
M 172.569055975409 0.0069127 deg
tp 2413600.441991788808
(1896-Feb-10.94199179)
0.62827 JED
period 90537.78960917794
247.88
4.5489
0.01245
d
yr
n .003976240214765596 1.9978e-07 deg/d
Q 48.07894155518292 0.0016104 AU
  Orbit Determination Parameters
   # obs. used (total)      430  
   data-arc span      22777 days (62.36 yr)  
   first obs. used      1951-11-08  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .36842  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 17:46:04  

Additional Information
 Earth MOID = 29.8932 AU 
 T_jup = 5.164 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 2.2 mag n/a MPO220118  
rotation period rot_per 13.188 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Rabinowitz, D.L.; Schaefer, B.E.; Tourtellotte, S.W. (2007) Astron. J. 133, 26-43.]

90482 Orcus I           Discovered 2005 Nov. 13 by T.-A. Suer and M. E. Brown at Palomar.
Vanth is a daimon in Etruscan mythology who guides the dead to the underworld. She often appears on tomb paintings and sarcophagi, where she is depicted with wings and a torch. She is frequently shown in the presence of Charun, a guard of the underworld. The name was suggested by S. Taaffe.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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