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90377 Sedna (2003 VB12)
Classification: TransNeptunian Object          SPK-ID: 2090377
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8412278085112536 0.00019236  
a 479.6497990696244 0.56281 au
q 76.15504974542115 0.0063374 au
i 11.9299236885317 8.8372e-06 deg
node 144.3273060089564 0.0014532 deg
peri 311.5315638343632 0.010567 deg
M 358.0396196834687 0.003343 deg
tp 2479494.551445041503
(2076-Jul-10.05144504)
3.3283 TDB
period 3836938.402607665
10504.96
6753.3
18.49
d
yr
n 9.38248056719744E-5 1.6514e-07 deg/d
Q 883.1445483938274 1.0363 au
  Orbit Determination Parameters
   # obs. used (total)      202  
   data-arc span      10300 days (28.20 yr)  
   first obs. used      1990-09-25  
   last obs. used      2018-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .44669  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:58:43  

Additional Information
 Earth MOID = 75.1839 au 
 Jupiter MOID = 71.0472 au 
 T_jup = 10.169 
[ 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 1.5   n/a MPO385374  
rotation period rot_per 10.273 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Gaudi, B.S.; Stanek, K.Z.; Hartman, J.D.; Holman, M.J.; McLeod, B.A. (2005) Astrophys. J. Let. 629, L49-L52.]

90377 Sedna           Discovered 2003 Nov. 14 by M. E. Brown, C. A. Trujillo and D. Rabinowitz at Palomar.
Sedna is the Inuit goddess of the sea and the mother of all sea creatures. She rewards the people of the land with food from the sea. Without her blessing, hunts fail and the people starve. She is thus one of the most important figures in Inuit legend.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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