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15225 (1985 RJ4)
Classification: Main-belt Asteroid          SPK-ID: 2015225
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1994329536426646 5.7494e-08  
a 3.127784806003332 2.1886e-08 AU
q 2.504001443783439 1.7505e-07 AU
i 2.245149217149848 7.7884e-06 deg
node 33.97940047777966 0.00015716 deg
peri 311.6390763921991 0.00015836 deg
M 81.50559169002096 1.9726e-05 deg
tp 2456343.055269576649
(2013-Feb-19.55526958)
0.00010938 JED
period 2020.4761359038
5.53
2.1207e-05
5.806e-08
d
yr
n .1781758238084632 1.8701e-09 deg/d
Q 3.751568168223225 2.6251e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      874  
   data-arc span      14432 days (39.51 yr)  
   first obs. used      1974-09-19  
   last obs. used      2014-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58454  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:07:05  

Additional Information
 Earth MOID = 1.49629 AU 
 T_jup = 3.182 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO236477  

15225 (1985 RJ4)          Discovered 1985-Sep-11 by Debehogne, H. at La Silla (809)
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1985 RJ4 = 1974 SD1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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