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85251 (1993 RJ18)
Classification: Main-belt Asteroid          SPK-ID: 2085251
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2148050479416234 1.0392e-07  
a 2.698239686623676 2.4978e-08 au
q 2.118644181380486 2.8732e-07 au
i 10.21325374491409 1.1152e-05 deg
node 351.9583673826903 3.6548e-05 deg
peri 327.1712124740955 4.2959e-05 deg
M 36.34846295618856 1.7006e-05 deg
tp 2457237.043285393509
(2015-Aug-02.54328539)
7.7034e-05 JED
period 1618.896989654366
4.43
2.2479e-05
6.154e-08
d
yr
n .2223736298854073 3.0878e-09 deg/d
Q 3.277835191866866 3.0343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      8120 days (22.23 yr)  
   first obs. used      1993-09-15  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56102  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 16:15:28  

Additional Information
 Earth MOID = 1.11242 au 
 Jupiter MOID = 2.08322 au 
 T_jup = 3.313 
[ 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 15.5 mag n/a MPO359337  

85251 (1993 RJ18)          Discovered 1993-Sep-15 by Debehogne, H., Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1993 RJ18 = 2002 TY253 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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