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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2147256093211809 1.0654e-07  
a 2.697889282310052 4.9361e-08 AU
q 2.118583362284943 3.008e-07 AU
i 10.21301835436635 1.4637e-05 deg
node 351.9616445409665 5.5404e-05 deg
peri 327.2235054099446 6.4546e-05 deg
M 307.3536434568362 4.3642e-05 deg
tp 2457237.201184399473
(2015-Aug-02.70118440)
0.00020101 JED
period 1618.58164513144
4.43
4.4421e-05
1.216e-07
d
yr
n .222416954426025 6.1041e-09 deg/d
Q 3.277195202335161 5.9961e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      7586 days (20.77 yr)  
   first obs. used      1993-09-15  
   last obs. used      2014-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61391  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 14:23:41  

Additional Information
 Earth MOID = 1.11506 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 15.3 mag n/a MPO299495  

85251 (1993 RJ18)          Discovered 1993-Sep-15 by Debehogne, H., Elst, E. W. at La Silla (809)
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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