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90377 Sedna (2003 VB12)
Classification: TransNeptunian Object          SPK-ID: 2090377
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 .8549069895921635 0.00028705  
a 524.434127467771 1.0243 AU
q 76.09172631490596 0.0087153 AU
i 11.92863849477524 3.9101e-05 deg
node 144.5452006003131 0.001941 deg
peri 311.2877949215967 0.013523 deg
M 358.1631284022692 0.0053679 deg
tp 2479383.131438020650
(2076-Mar-20.63143802)
4.2316 JED
period 4386668.794727737
12010.04
12851
35.18
d
yr
n 8.206682948862652E-5 2.4043e-07 deg/d
Q 972.776528620636 1.8999 AU
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      8819 days (24.15 yr)  
   first obs. used      1990-09-25  
   last obs. used      2014-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .78999  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 06:07:56  

Additional Information
 Earth MOID = 75.1204 AU 
 T_jup = 10.201 
[ 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 mag n/a MPO244863  
rotation period rot_per 10.273 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:
[Gaudi, B.S.; Stanek, K.Z.; Hartman, J.D.; Holman, M.J.; McLeod, B.A. (2005) Astrophys. J. 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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