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78512 (2002 RK87)
Classification: Main-belt Asteroid          SPK-ID: 2078512
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825420707821842 4.3747e-08  
a 2.991312583644751 1.5785e-08 au
q 2.445272190269432 1.2854e-07 au
i 1.431238956135122 5.2508e-06 deg
node 158.5760211455679 0.00016754 deg
peri 234.4209626708425 0.00016809 deg
M 128.98041114827 1.3473e-05 deg
tp 2458323.463036595170
(2018-Jul-23.96303660)
6.9002e-05 TDB
period 1889.692432020194
5.17
1.4957e-05
4.095e-08
d
yr
n .1905071925462169 1.5079e-09 deg/d
Q 3.537352977020069 1.8666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      735  
   data-arc span      8239 days (22.56 yr)  
   first obs. used      1997-10-30  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54453  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:35  

Additional Information
 Earth MOID = 1.45178 au 
 Jupiter MOID = 1.89897 au 
 T_jup = 3.230 
[ 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 15.1   n/a MPO247906  
diameter diameter 5.050 km 1.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78512 (2002 RK87)          Discovered 2002-Sep-05 by LINEAR at Socorro
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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