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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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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8476983851790694 0.00023864  
a 499.2486329757282 0.7818 au
q 76.03637299934553 0.0087386 au
i 11.92875781503226 3.0416e-05 deg
node 144.5249854658404 0.0015977 deg
peri 311.5275244182892 0.013377 deg
M 358.0622781899921 0.0046124 deg
tp 2479531.714377998330
4.4209 JED
period 4074494.664457206
n 8.835451501271221E-5 2.0754e-07 deg/d
Q 922.460892952111 1.4445 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      9240 days (25.30 yr)  
   first obs. used      1990-09-25  
   last obs. used      2016-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .79945  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 04:52:01  

Additional Information
 Earth MOID = 75.0636 au 
 Jupiter MOID = 70.9349 au 
 T_jup = 10.178 
[ 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 1.6 mag n/a MPO359374  
rotation period rot_per 10.273 h n/a LCDB (Rev. 2016-February); 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. 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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