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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457107.5 (2015-Mar-26.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1830149822507789 5.0343e-08  
q 2.423064879104438 1.4018e-07 au
tp 2456699.254397613050
(2014-Feb-10.75439761)
6.9794e-05 TDB
node 158.770845322818 0.00015547 deg
peri 197.3993284738897 0.00015602 deg
i 1.861213289536456 4.4033e-06 deg
  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
 Jupiter MOID = 1.94134 au 
 T_jup = 3.238 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.534465238246246E-15 -7.026230630498718E-15 1.486519758294656E-13 -1.505567146571362E-14 1.568956273267332E-14 -8.448995102744879E-16
q -7.026230630498718E-15 1.965176997799475E-14 -4.606912965662444E-13 4.918061562496123E-14 -5.058064454269944E-14 2.326158040791968E-15
tp 1.486519758294656E-13 -4.606912965662444E-13 4.871206576495859E-9 3.134222891128907E-11 9.458061523754105E-10 -1.438673353612559E-12
node -1.505567146571362E-14 4.918061562496123E-14 3.134222891128907E-11 2.417125551254152E-8 -2.41527170084482E-8 3.023883960977827E-12
peri 1.568956273267332E-14 -5.058064454269944E-14 9.458061523754105E-10 -2.41527170084482E-8 2.434210278900048E-8 -3.301647771244783E-12
i -8.448995102744879E-16 2.326158040791968E-15 -1.438673353612559E-12 3.023883960977827E-12 -3.301647771244783E-12 1.938922693160461E-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 15.4   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

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