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85687 (1998 RF55)
Classification: Main-belt Asteroid          SPK-ID: 2085687
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266259775917361 4.3405e-08  
a 2.292225995172643 7.1039e-09 au
q 2.001970637672717 9.8482e-08 au
i 5.986007692670297 3.925e-06 deg
node 331.2720144522752 4.0234e-05 deg
peri 57.07737162996354 4.3399e-05 deg
M 68.44312298227767 1.4384e-05 deg
tp 2458759.502857129400
(2019-Oct-03.00285713)
5.0669e-05 TDB
period 1267.606848622043
3.47
5.8927e-06
1.613e-08
d
yr
n .2839997278267622 1.3202e-09 deg/d
Q 2.582481352672569 8.0035e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1122  
   data-arc span      7886 days (21.59 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48015  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:08  

Additional Information
 Earth MOID = 1.01322 au 
 Jupiter MOID = 2.86498 au 
 T_jup = 3.580 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO395766  

85687 (1998 RF55)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 RF55 = 2000 DN76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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