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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267398569828276 4.3377e-08  
a 2.292128135996122 6.8001e-09 au
q 2.001624143853658 9.8437e-08 au
i 5.986340938854226 3.8989e-06 deg
node 331.2710661965693 3.7313e-05 deg
peri 57.06159816271108 3.9717e-05 deg
M 125.2496082357724 1.2835e-05 deg
tp 2458759.508071630035
(2019-Oct-03.00807163)
4.4902e-05 TDB
period 1267.525674925384
3.47
5.6406e-06
1.544e-08
d
yr
n .284017915472357 1.2639e-09 deg/d
Q 2.582632128138585 7.662e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1199  
   data-arc span      8226 days (22.52 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48453  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:07:14  

Additional Information
 Earth MOID = 1.01161 au 
 Jupiter MOID = 2.86546 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 15.56   n/a MPCxxxxx  

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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