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20517 Judycrystal (1999 RB35)
Classification: Main-belt Asteroid          SPK-ID: 2020517
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04152773484573588 7.4779e-08  
a 2.648136696531263 2.5823e-08 AU
q 2.53816557796245 1.871e-07 AU
i 21.30849143996074 9.9644e-06 deg
node 291.0658367597983 2.5062e-05 deg
peri 135.8761171637694 0.00017296 deg
M 126.5663838561238 0.00016695 deg
tp 2456447.118167118128
(2013-Jun-03.61816712)
0.00072941 JED
period 1574.015577974777
4.31
2.3023e-05
6.303e-08
d
yr
n .2287143818888996 3.3455e-09 deg/d
Q 2.758107815100077 2.6896e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      14266 days (39.06 yr)  
   first obs. used      1976-05-29  
   last obs. used      2015-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .69569  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:27:09  

Additional Information
 Earth MOID = 1.57472 AU 
 T_jup = 3.293 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO250415  

20517 Judycrystal           Discovered 1999 Sept. 11 by L. Robinson at Sunflower Observatory.
Judy Crystal (Andrews) Robinson (b. 1949) is the wife of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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