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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2147256042211366 1.0613e-07  
a 2.697889292913085 3.5843e-08 AU
q 2.118583384370588 2.9667e-07 AU
i 10.21301459475206 1.3428e-05 deg
node 351.961633468987 5.2808e-05 deg
peri 327.2235229407485 5.8754e-05 deg
M 307.3536334490843 2.8994e-05 deg
tp 2457237.201230790325
(2015-Aug-02.70123079)
0.00013254 JED
period 1618.581654673274
4.43
3.2255e-05
8.831e-08
d
yr
n .2224169531148364 4.4323e-09 deg/d
Q 3.277195201455582 4.3539e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1993-09-15  
   last obs. used      2015-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5998  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 14:06:49  

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
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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