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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2271704860499933 7.2749e-08  
a 2.410377295626474 1.9206e-08 AU
q 1.862810713815139 1.6796e-07 AU
i 3.053952159214905 5.918e-06 deg
node 131.7394426866902 0.00011804 deg
peri 229.2521529710748 0.00011874 deg
M 71.48105430170331 1.6705e-05 deg
tp 2456729.097141558644
(2014-Mar-12.59714156)
6.1064e-05 JED
period 1366.866087711858
3.74
1.6337e-05
4.473e-08
d
yr
n .2633762028602541 3.1479e-09 deg/d
Q 2.957943877437808 2.3569e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      613  
   data-arc span      8537 days (23.37 yr)  
   first obs. used      1991-09-14  
   last obs. used      2015-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53896  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 16:13:38  

Additional Information
 Earth MOID = .861545 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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