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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .18202363501637 4.97e-08  
a 2.967813935060807 2.0507e-08 au
q 2.427601654548802 1.3814e-07 au
i 1.866972786341353 4.3976e-06 deg
node 158.7445647919437 0.0001555 deg
peri 199.2974957751116 0.00015608 deg
M 81.28688582621929 1.4202e-05 deg
tp 2458578.831250217316
(2019-Apr-05.33125022)
7.2792e-05 TDB
period 1867.469129599779
5.11
1.9356e-05
5.299e-08
d
yr
n .1927742709605874 1.998e-09 deg/d
Q 3.508026215572812 2.424e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      8717 days (23.87 yr)  
   first obs. used      1996-03-20  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57711  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:24:18  

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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