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78555 (2002 RF139)
Classification: Main-belt Asteroid          SPK-ID: 2078555
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00239978204156671 5.0127e-08  
a 3.077646780719678 2.5759e-08 au
q 3.070261099245021 1.679e-07 au
i 11.15932419112074 4.3423e-06 deg
node 90.64918592968557 2.7128e-05 deg
peri 60.66216203289397 0.0010782 deg
M 308.6743983227443 0.0010768 deg
tp 2459281.662979778421
(2021-Mar-08.16297978)
0.0058984 TDB
period 1972.089355263908
5.40
2.4759e-05
6.779e-08
d
yr
n .1825475093403282 2.2918e-09 deg/d
Q 3.085032462194334 2.5821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      648  
   data-arc span      10173 days (27.85 yr)  
   first obs. used      1992-12-16  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:25  

Additional Information
 Earth MOID = 2.065 au 
 Jupiter MOID = 1.96755 au 
 T_jup = 3.200 
[ 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 14.6   n/a MPO453206  

78555 (2002 RF139)          Discovered 2002-Sep-10 by NEAT at Palomar
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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