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39792 (1997 RJ4)
Classification: Main-belt Asteroid          SPK-ID: 2039792
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1227937980494642 3.8069e-08  
a 2.177703774077483 1.1095e-08 au
q 1.910295256631857 8.6394e-08 au
i 4.557821469260396 5.8443e-06 deg
node 24.23706121383298 5.1053e-05 deg
peri 58.22274294994612 5.8623e-05 deg
M 332.9681351686735 3.2384e-05 deg
tp 2459088.639409975464
(2020-Aug-27.13940998)
0.00010605 TDB
period 1173.806830907045
3.21
8.9703e-06
2.456e-08
d
yr
n .306694415572462 2.3438e-09 deg/d
Q 2.44511229152311 1.2457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      10139 days (27.76 yr)  
   first obs. used      1992-01-29  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61655  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 02:33:16  

Additional Information
 Earth MOID = .930598 au 
 Jupiter MOID = 2.74779 au 
 T_jup = 3.669 
[ 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 16.5   n/a MPO337580  

39792 (1997 RJ4)          Discovered 1997-Sep-05 by ODAS at Caussols
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 RJ4 = 2000 SC244 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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