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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1993356358629099 5.2506e-08  
a 3.132134313275736 2.7359e-08 AU
q 2.507788328330879 1.5631e-07 AU
i 2.24407219377295 6.007e-06 deg
node 33.88083409910951 0.00015001 deg
peri 312.1538156348158 0.00015091 deg
M 116.6289965987504 1.714e-05 deg
tp 2456344.561637408491
(2013-Feb-21.06163741)
9.4108e-05 JED
period 2024.692121337116
5.54
2.6529e-05
7.263e-08
d
yr
n .1778048110160345 2.3297e-09 deg/d
Q 3.756480298220594 3.2813e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1039  
   data-arc span      14793 days (40.50 yr)  
   first obs. used      1974-09-19  
   last obs. used      2015-03-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54947  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:51:53  

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
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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