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186418 (2002 RA)
Classification: Mars-crossing Asteroid          SPK-ID: 2186418
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2879669257249379 4.3696e-08  
a 2.25579447616392 5.0338e-09 au
q 1.606200275795699 9.8695e-08 au
i 4.5308665719764 4.3632e-06 deg
node 318.5025709396352 4.3044e-05 deg
peri 44.53965491690597 4.3622e-05 deg
M 125.2719012024621 5.2364e-06 deg
tp 2458769.875348313797
(2019-Oct-13.37534831)
1.7944e-05 TDB
period 1237.507159378742
3.39
4.1422e-06
1.134e-08
d
yr
n .2909074079060106 9.7373e-10 deg/d
Q 2.905388676532141 6.4833e-09 au
  Orbit Determination Parameters
   # obs. used (total)      710  
   data-arc span      7786 days (21.32 yr)  
   first obs. used      1999-12-15  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48757  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:14:06  

Additional Information
 Earth MOID = .605809 au 
 Jupiter MOID = 2.56951 au 
 T_jup = 3.564 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.56   n/a MPCxxxxx  

186418 (2002 RA)          Discovered 2002-Sep-01 by LONEOS at Anderson Mesa
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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