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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1821381054071458 4.9623e-08  
a 2.968026186533338 2.0042e-08 au
q 2.42743552011936 1.3765e-07 au
i 1.867180631254478 4.3369e-06 deg
node 158.7383558444966 0.000136 deg
peri 199.3320873610359 0.00013654 deg
M 119.7939962537362 1.3532e-05 deg
tp 2458579.012251723085
(2019-Apr-05.51225172)
6.8248e-05 TDB
period 1867.66946905915
5.11
1.8917e-05
5.179e-08
d
yr
n .1927535926265112 1.9524e-09 deg/d
Q 3.508616852947316 2.3692e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      9126 days (24.99 yr)  
   first obs. used      1996-03-20  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:39  

Additional Information
 Earth MOID = 1.42203 au 
 Jupiter MOID = 1.94166 au 
 T_jup = 3.238 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457422.5 (2016-Feb-04.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1823924451585612 5.0246e-08  
q 2.427969337651215 1.395e-07 au
tp 2456700.217831100323
(2014-Feb-11.71783110)
6.4182e-05 TDB
node 158.7425623856586 0.00013576 deg
peri 197.8055181978401 0.00013628 deg
i 1.862804712642048 4.3552e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      9126 days (24.99 yr)  
   first obs. used      1996-03-20  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:39  

Additional Information
 Jupiter MOID = 1.94166 au 
 T_jup = 3.238 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.5246480323725E-15 -6.979180738078507E-15 1.183330864747571E-13 -5.298995958293956E-15 -2.439944336463183E-16 -7.293522942698341E-16
q -6.979180738078507E-15 1.94591383761317E-14 -2.793724354313315E-13 1.535353668909879E-14 2.354106627651684E-14 1.92010922671694E-15
tp 1.183330864747571E-13 -2.793724354313315E-13 4.119303014042294E-9 2.000641067673382E-11 7.79489665231464E-10 -1.249914163027739E-12
node -5.298995958293956E-15 1.535353668909879E-14 2.000641067673382E-11 1.843155088920484E-8 -1.841857165031158E-8 -4.295600328740909E-11
peri -2.439944336463183E-16 2.354106627651684E-14 7.79489665231464E-10 -1.841857165031158E-8 1.857168797741465E-8 4.270130577085676E-11
i -7.293522942698341E-16 1.92010922671694E-15 -1.249914163027739E-12 -4.295600328740909E-11 4.270130577085676E-11 1.896790540735972E-11

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 15.53   n/a E2021B55  
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

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