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442622 (2012 SJ8)
Classification: Main-belt Asteroid          SPK-ID: 2442622
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1675894894205306 9.9981e-08  
a 2.295530204052549 1.875e-08 au
q 1.910823469205976 2.2547e-07 au
i 6.096995120610776 9.7888e-06 deg
node 204.0319245677616 6.3275e-05 deg
peri 127.6571875225371 8.5869e-05 deg
M 96.13766195501465 4.6142e-05 deg
tp 2458661.254575190493
(2019-Jun-26.75457519)
0.00016113 TDB
period 1270.348690074963
3.48
1.5564e-05
4.261e-08
d
yr
n .2833867605112078 3.472e-09 deg/d
Q 2.680236938899122 2.1892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      5158 days (14.12 yr)  
   first obs. used      2005-09-12  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53591  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:00:59  

Additional Information
 Earth MOID = .908082 au 
 Jupiter MOID = 2.69663 au 
 T_jup = 3.569 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.2   n/a MPO336584  

442622 (2012 SJ8)          Discovered 2005-Sep-12 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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