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85212 (1992 RF)
Classification: Main-belt Asteroid          SPK-ID: 2085212
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968757175399272 6.4191e-08  
a 2.714170742861636 1.274e-08 au
q 2.179816430334874 1.7339e-07 au
i 28.38281670949213 4.5658e-06 deg
node 66.61461866424237 1.0028e-05 deg
peri 338.7517477164197 1.6648e-05 deg
M 131.3373436060504 1.1181e-05 deg
tp 2458800.645942086725
(2019-Nov-13.14594209)
5.0223e-05 TDB
period 1633.255667879195
4.47
1.1499e-05
3.148e-08
d
yr
n .2204186442331255 1.5519e-09 deg/d
Q 3.248525055388397 1.5248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1069  
   data-arc span      10512 days (28.78 yr)  
   first obs. used      1992-09-04  
   last obs. used      2021-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48513  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:51:05  

Additional Information
 Earth MOID = 1.20476 au 
 Jupiter MOID = 2.15117 au 
 T_jup = 3.163 
[ 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 14.74   n/a MPO637170  
diameter diameter 3.226 km 0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.269   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85212 (1992 RF)          Discovered 1992-Sep-04 by McNaught, R. H. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1992 RF = 2001 TX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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