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78540 (2002 RH117)
Classification: Main-belt Asteroid          SPK-ID: 2078540
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1429781270180663 3.8954e-08  
a 3.197042186574556 2.6571e-08 au
q 2.739935082740383 1.2052e-07 au
i 1.349822795359369 5.3365e-06 deg
node 33.87338314961396 0.00021222 deg
peri 236.0782278848084 0.00021326 deg
M 99.43617890545524 2.0533e-05 deg
tp 2458423.782800357672
(2018-Nov-01.28280036)
0.00011811 TDB
period 2087.954245191213
5.72
2.6029e-05
7.126e-08
d
yr
n .1724175713280688 2.1494e-09 deg/d
Q 3.654149290408729 3.037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      415  
   data-arc span      10608 days (29.04 yr)  
   first obs. used      1991-10-10  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:28  

Additional Information
 Earth MOID = 1.7241 au 
 Jupiter MOID = 1.44728 au 
 T_jup = 3.179 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO313976  

78540 (2002 RH117)          Discovered 2002-Sep-07 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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