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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2146829787892299 1.0655e-07  
a 2.69748403015058 4.9402e-08 AU
q 2.118380123321477 3.0074e-07 AU
i 10.21346960304002 1.4638e-05 deg
node 351.9644983402268 5.5403e-05 deg
peri 327.257027471521 6.4549e-05 deg
M 262.8239335406968 4.277e-05 deg
tp 2457237.310998457529
(2015-Aug-02.81099846)
0.00020102 JED
period 1618.216966114456
4.43
4.4455e-05
1.217e-07
d
yr
n .2224670779867088 6.1115e-09 deg/d
Q 3.276587936979683 6.0008e-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 = 1.11301 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 15.2 mag n/a MPO253864  

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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