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120903 (1998 SV31)
Classification: Main-belt Asteroid          SPK-ID: 2120903
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1820236350879261 4.9682e-08  
a 2.967813935131699 2.0503e-08 au
q 2.427601654394425 1.3807e-07 au
i 1.866972857439991 4.3874e-06 deg
node 158.7445647048494 0.00015548 deg
peri 199.2974957864612 0.00015607 deg
M 81.28688585969958 1.4197e-05 deg
tp 2458578.831250028531
(2019-Apr-05.33125003)		 7.2771e-05 TDB
period 1867.469129666692
5.11		 1.9352e-05
5.298e-08		 d
yr
n .1927742709536801 1.9976e-09 deg/d
Q 3.508026215868973 2.4235e-08 au
   Orbit Determination Parameters
   # obs. used (total)      484  
   data-arc span      8731 days (23.90 yr)  
   first obs. used      1996-03-20  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5756  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:53  

Additional Information
 Earth MOID = 1.42385 au 
 Jupiter MOID = 1.94134 au 
 T_jup = 3.238 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO453679  
diameter diameter 4.110 km 0.843 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120903 (1998 SV31)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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