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43810 (1991 RJ20)
Classification: Main-belt Asteroid          SPK-ID: 2043810
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2276639398183178 7.2738e-08  
a 2.411374020184623 1.9715e-08 au
q 1.862391110373856 1.6774e-07 au
i 3.05396826424562 5.9123e-06 deg
node 131.7339620838384 0.00011685 deg
peri 229.5194427817799 0.00011756 deg
M 176.3957000666781 1.7584e-05 deg
tp 2456730.336475066968
(2014-Mar-13.83647507)
6.0815e-05 JED
period 1367.714002578832
3.74
1.6774e-05
4.592e-08
d
yr
n .2632129226733206 3.228e-09 deg/d
Q 2.96035692999539 2.4204e-08 au
  Orbit Determination Parameters
   # obs. used (total)      629  
   data-arc span      8647 days (23.67 yr)  
   first obs. used      1991-09-14  
   last obs. used      2015-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54021  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 17:32:26  

Additional Information
 Earth MOID = .859193 au 
 Jupiter MOID = 2.4857 au 
 T_jup = 3.482 
[ 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 MPO229321  

43810 (1991 RJ20)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RJ20 = 1995 XZ4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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