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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8425873886655758 0.00010575  
a 484.4383856751184 0.33285 au
q 76.25671131975329 0.0046145 au
i 11.93069189501167 7.4801e-06 deg
node 144.2478669059737 0.0010769 deg
peri 311.3522042988321 0.0072591 deg
M 358.1169304420289 0.0020203 deg
tp 2479371.864097839931
(2076-Mar-09.36409784)
2.6032 TDB
period 3894540.721652344
10662.67
4013.8
10.99
d
yr
n 9.243708712519563E-5 9.5267e-08 deg/d
Q 892.6200600304834 0.6133 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      10710 days (29.32 yr)  
   first obs. used      1990-09-25  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .42797  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:09:35  

Additional Information
 Earth MOID = 75.2856 au 
 Jupiter MOID = 71.1483 au 
 T_jup = 10.179 
[ 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 1.3   n/a MPO468887  
rotation period rot_per 10.273 h n/a LCDB (Rev. 2019-August); 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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