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85688 (1998 RN55)
Classification: Main-belt Asteroid          SPK-ID: 2085688
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714588894492378 3.6979e-08  
a 2.212036611550508 9.2088e-09 au
q 1.832763270713003 8.0636e-08 au
i 3.36928027096218 4.4337e-06 deg
node 249.7404178269738 6.7823e-05 deg
peri 98.23779419311479 6.9486e-05 deg
M 221.7960478253502 1.8183e-05 deg
tp 2459461.822731457953
(2021-Sep-04.32273146)
6.2466e-05 TDB
period 1201.674631670379
3.29
7.504e-06
2.054e-08
d
yr
n .2995819255163809 1.8708e-09 deg/d
Q 2.591309952388013 1.0788e-08 au
  Orbit Determination Parameters
   # obs. used (total)      685  
   data-arc span      7934 days (21.72 yr)  
   first obs. used      1998-08-27  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:08  

Additional Information
 Earth MOID = .829902 au 
 Jupiter MOID = 2.83064 au 
 T_jup = 3.635 
[ 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 16.0   n/a MPO468827  

85688 (1998 RN55)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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