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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1224903977606615 3.8089e-08  
a 2.178165130073896 1.1167e-08 au
q 1.911360816902742 8.6412e-08 au
i 4.557760888739464 5.844e-06 deg
node 24.24988726983164 5.1047e-05 deg
peri 58.12703430027998 5.8653e-05 deg
M 210.364640551654 3.1823e-05 deg
tp 2459088.552294783055
(2020-Aug-27.05229478)
0.00010629 TDB
period 1174.179864770204
3.21
9.0299e-06
2.472e-08
d
yr
n .3065969795610954 2.3579e-09 deg/d
Q 2.444969443245051 1.2535e-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 = .931539 au 
 Jupiter MOID = 2.74925 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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