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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1993356350636743 5.3122e-08  
a 3.13213431436748 2.7876e-08 AU
q 2.507788331708312 1.5907e-07 AU
i 2.244066130925721 6.8026e-06 deg
node 33.88081154249556 0.00015118 deg
peri 312.1538364164796 0.00015224 deg
M 116.628997923099 1.7872e-05 deg
tp 2456344.561629617210
(2013-Feb-21.06162962)
9.8801e-05 JED
period 2024.692122395713
5.54
2.703e-05
7.4e-08
d
yr
n .1778048109230705 2.3737e-09 deg/d
Q 3.756480297026648 3.3433e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      14710 days (40.27 yr)  
   first obs. used      1974-09-19  
   last obs. used      2014-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5615  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:26:36  

Additional Information
 Earth MOID = 1.50185 AU 
 T_jup = 3.181 
[ 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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