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101937 (1999 RD23)
Classification: Main-belt Asteroid          SPK-ID: 2101937
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1716636460072365 4.4988e-08  
a 2.335804774245553 1.127e-08 au
q 1.934832010337451 1.0171e-07 au
i 23.50295955750098 5.2561e-06 deg
node 174.1714270136561 8.7462e-06 deg
peri 53.86856820839023 1.6107e-05 deg
M 43.20293179803775 1.1818e-05 deg
tp 2458844.018154909395
(2019-Dec-26.51815491)
4.2817e-05 TDB
period 1303.926883850427
3.57
9.4371e-06
2.584e-08
d
yr
n .2760891001318564 1.9982e-09 deg/d
Q 2.736777538153655 1.3205e-08 au
  Orbit Determination Parameters
   # obs. used (total)      939  
   data-arc span      10772 days (29.49 yr)  
   first obs. used      1991-04-20  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54047  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:39  

Additional Information
 Earth MOID = .997013 au 
 Jupiter MOID = 2.34669 au 
 T_jup = 3.438 
[ 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 15.2   n/a MPO432545  

101937 (1999 RD23)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RD23 = 1991 HR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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