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JPL Small-Body Database Browser
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85685 (1998 RT42)
Classification: Main-belt Asteroid          SPK-ID: 2085685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06692298457613029 3.7696e-08  
a 2.27878791219664 1.0605e-08 au
q 2.126284623896432 8.5365e-08 au
i 6.984384099335883 5.3917e-06 deg
node 213.5646019667629 3.6372e-05 deg
peri 238.954199093721 6.1587e-05 deg
M 266.2017047186661 4.6958e-05 deg
tp 2458927.875920207158
(2020-Mar-19.37592021)
0.00016344 TDB
period 1256.476260267713
3.44
8.7709e-06
2.401e-08
d
yr
n .2865155605274199 2e-09 deg/d
Q 2.431291200496848 1.1315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      677  
   data-arc span      8215 days (22.49 yr)  
   first obs. used      1997-05-04  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57362  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:13:30  

Additional Information
 Earth MOID = 1.15184 au 
 Jupiter MOID = 2.69282 au 
 T_jup = 3.594 
[ 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 15.9   n/a MPO453287  

85685 (1998 RT42)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 RT42 = 2002 VD84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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