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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06702541179224161 3.5888e-08  
a 2.279242664149046 9.5339e-09 au
q 2.12647548601001 8.2516e-08 au
i 6.98356049412643 4.9977e-06 deg
node 213.5613114569738 3.0287e-05 deg
peri 238.7620523197474 5.7791e-05 deg
M 20.97420684401582 4.5219e-05 deg
tp 2458927.273661099681
(2020-Mar-18.77366110)
0.00015803 TDB
period 1256.852390184004
3.44
7.886e-06
2.159e-08
d
yr
n .2864298169073742 1.7972e-09 deg/d
Q 2.432009842288081 1.0173e-08 au
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      8303 days (22.73 yr)  
   first obs. used      1997-05-04  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54239  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:13  

Additional Information
 Earth MOID = 1.15202 au 
 Jupiter MOID = 2.69127 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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