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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .200130299790112 5.2564e-08  
a 3.134598072306275 3.0642e-08 au
q 2.507270020374113 1.5663e-07 au
i 2.249122793699087 5.8761e-06 deg
node 33.55339090987981 0.00014837 deg
peri 313.5076805871431 0.00014924 deg
M 186.2058624873625 1.7054e-05 deg
tp 2458379.096914153648
(2018-Sep-17.59691415)
0.0001008 JED
period 2027.081546808193
5.55
2.9723e-05
8.138e-08
d
yr
n .1775952233233289 2.6041e-09 deg/d
Q 3.761926124238437 3.6774e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      15063 days (41.24 yr)  
   first obs. used      1974-09-19  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54875  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:30:05  

Additional Information
 Earth MOID = 1.49923 au 
 Jupiter MOID = 1.65246 au 
 T_jup = 3.180 
[ 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 13.6 mag n/a MPO337387  

15225 (1985 RJ4)          Discovered 1985-Sep-11 by Debehogne, H. at La Silla
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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