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JPL Small-Body Database Browser
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20105 (1995 OS1)
Classification: Main-belt Asteroid          SPK-ID: 2020105
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07415529059237133 4.6928e-08  
a 2.474972767809531 1.026e-08 au
q 2.291440443004409 1.1294e-07 au
i 2.819370290505961 4.7163e-06 deg
node 338.4352911281364 8.3353e-05 deg
peri 67.97369802091035 9.2534e-05 deg
M 47.26792011062604 3.5555e-05 deg
tp 2458813.768297839875
(2019-Nov-26.26829784)
0.00014102 TDB
period 1422.178353105338
3.89
8.8433e-06
2.421e-08
d
yr
n .2531328080011463 1.574e-09 deg/d
Q 2.658505092614652 1.1021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1574  
   data-arc span      9366 days (25.64 yr)  
   first obs. used      1994-04-13  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53624  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:41:54  

Additional Information
 Earth MOID = 1.30239 au 
 Jupiter MOID = 2.59375 au 
 T_jup = 3.476 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456256.5 (2012-Nov-25.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07431114330485801 4.7546e-08  
q 2.290433614025871 1.1451e-07 au
tp 2455964.998891590069
(2012-Feb-07.49889159)
0.00014919 TDB
node 338.5830238980482 8.3163e-05 deg
peri 66.68445937205719 9.2261e-05 deg
i 2.823244419585987 4.722e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1574  
   data-arc span      9366 days (25.64 yr)  
   first obs. used      1994-04-13  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53624  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:41:54  

Additional Information
 Jupiter MOID = 2.59375 au 
 T_jup = 3.476 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.260656588620405E-15 -5.428641148953453E-15 -3.909906959725218E-12 2.51870845681452E-14 -1.0706721374846E-12 -1.142975768656761E-15
q -5.428641148953453E-15 1.31115625910654E-14 8.896784729796437E-12 -5.839693800003167E-14 2.443631440698698E-12 2.933913723334626E-15
tp -3.909906959725218E-12 8.896784729796437E-12 2.225869099206415E-8 -8.368144084605346E-11 5.977433935376226E-9 1.626146963963909E-12
node 2.51870845681452E-14 -5.839693800003167E-14 -8.368144084605346E-11 6.916142024888E-9 -6.929080254840862E-9 1.25999917315071E-10
peri -1.0706721374846E-12 2.443631440698698E-12 5.977433935376226E-9 -6.929080254840862E-9 8.512082426699976E-9 -1.253949279976423E-10
i -1.142975768656761E-15 2.933913723334626E-15 1.626146963963909E-12 1.25999917315071E-10 -1.253949279976423E-10 2.229712022486387E-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 14.6   n/a MPO347680  

20105 (1995 OS1)          Discovered 1995-Jul-19 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 OS1 = 1998 HA78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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