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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .199432905160297 5.3262e-08  
a 3.127784787945808 2.8018e-08 AU
q 2.504001580969592 1.6004e-07 AU
i 2.245140908042004 7.0476e-06 deg
node 33.97947010905315 0.00015123 deg
peri 311.63899077769 0.00015234 deg
M 81.50560758693926 1.8087e-05 deg
tp 2456343.055184317672
(2013-Feb-19.55518432)
0.0001005 JED
period 2020.476118406691
5.53
2.7148e-05
7.433e-08
d
yr
n .1781758253514469 2.3941e-09 deg/d
Q 3.751567994922024 3.3605e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      871  
   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      .56446  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 21:14:14  

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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