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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1966536375401202 6.6161e-08  
a 2.714641527362691 1.387e-08 au
q 2.18079739638935 1.7979e-07 au
i 28.38293156257053 6.5461e-06 deg
node 66.62819303921903 1.0154e-05 deg
peri 338.7954109193309 1.9318e-05 deg
M 44.02919776859429 1.2651e-05 deg
tp 2458800.695423590397
(2019-Nov-13.19542359)
5.7578e-05 TDB
period 1633.680629056655
4.47
1.252e-05
3.428e-08
d
yr
n .220361307832778 1.6888e-09 deg/d
Q 3.248485658336032 1.6597e-08 au
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      10008 days (27.40 yr)  
   first obs. used      1992-09-04  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50341  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:28:36  

Additional Information
 Earth MOID = 1.20607 au 
 Jupiter MOID = 2.14899 au 
 T_jup = 3.163 
[ 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 14.7   n/a MPO502664  
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

[ show close-approach data ]
Alternate Designations
 1992 RF = 2001 TX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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