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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2191615879728895 2.0043e-05  
a 39.43854693793646 0.0011851 AU
q 30.79513236367497 0.0017132 AU
i 20.54780798435962 4.9736e-05 deg
node 268.4513444224573 0.00025016 deg
peri 73.55543831782647 0.004298 deg
M 171.5622254986528 0.0062496 deg
tp 2413688.422064692320
(1896-May-08.92206469)
0.45981 JED
period 90464.83287099024
247.68
4.0777
0.01116
d
yr
n .003979446914066458 1.7937e-07 deg/d
Q 48.08196151219795 0.0014449 AU
  Orbit Determination Parameters
   # obs. used (total)      431  
   data-arc span      22697 days (62.14 yr)  
   first obs. used      1951-11-08  
   last obs. used      2013-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      1  
   fit RMS      .29607  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-22 13:10:01  

Additional Information
 Earth MOID = 29.8463 AU 
 T_jup = 5.162 
[ 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. 2013-Sep-12) 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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