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46564 (1991 RA11)
Classification: Main-belt Asteroid          SPK-ID: 2046564
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315135389936119 3.8698e-08  
a 3.183522804126049 2.2723e-08 au
q 2.764846453688565 1.2421e-07 au
i 17.17185129563329 4.9106e-06 deg
node 19.85190766278482 1.363e-05 deg
peri 103.0622639134006 2.2279e-05 deg
M 280.3109102824102 1.8159e-05 deg
tp 2459459.758010105036
(2021-Sep-02.25801011)
0.00010688 TDB
period 2074.724209094825
5.68
2.2214e-05
6.082e-08
d
yr
n .1735170382752044 1.8578e-09 deg/d
Q 3.602199154563533 2.5712e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1773  
   data-arc span      17789 days (48.70 yr)  
   first obs. used      1971-05-14  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44962  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:30:41  

Additional Information
 Earth MOID = 1.84072 au 
 Jupiter MOID = 1.6165 au 
 T_jup = 3.116 
[ 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 12.2   n/a MPO449295  
diameter diameter 21.536 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.037   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

46564 (1991 RA11)          Discovered 1991-Sep-10 by Holt, H. E. at Palomar
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RA11 = 1980 XN1 = 1999 CZ123 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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