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JPL Small-Body Database Browser
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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1264051054515558 4.3608e-08  
a 2.291780609847935 7.2373e-09 au
q 2.002087840188276 9.8988e-08 au
i 5.986009502968747 4.1493e-06 deg
node 331.2784232758112 4.0502e-05 deg
peri 57.06264778863705 4.3718e-05 deg
M 314.838489831187 1.4733e-05 deg
tp 2458759.473209797563
(2019-Oct-02.97320980)
5.1865e-05 TDB
period 1267.237417730197
3.47
6.0028e-06
1.643e-08
d
yr
n .2840825207361785 1.3457e-09 deg/d
Q 2.581473379507594 8.1522e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      7745 days (21.20 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48449  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:18:19  

Additional Information
 Earth MOID = 1.0126 au 
 Jupiter MOID = 2.86581 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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