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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714588891212937 3.7023e-08  
a 2.212036611469601 9.2242e-09 au
q 1.832763271371392 8.0716e-08 au
i 3.369280606313441 4.4929e-06 deg
node 249.7404206358549 6.8103e-05 deg
peri 98.23779172549465 6.9782e-05 deg
M 221.7960475939435 1.8228e-05 deg
tp 2459461.822732205075
(2021-Sep-04.32273221)
6.2599e-05 TDB
period 1201.67463160445
3.29
7.5165e-06
2.058e-08
d
yr
n .2995819255328172 1.8739e-09 deg/d
Q 2.591309951567809 1.0806e-08 au
  Orbit Determination Parameters
   # obs. used (total)      679  
   data-arc span      7912 days (21.66 yr)  
   first obs. used      1998-08-27  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:39:28  

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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