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101940 (1999 RW23)
Classification: Main-belt Asteroid          SPK-ID: 2101940
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2331471134032689 5.9409e-08  
a 2.295919917321288 5.1553e-09 au
q 1.760632815992758 1.3514e-07 au
i 6.001741616070838 5.4628e-06 deg
node 21.1378260231552 2.6237e-05 deg
peri 339.7236830648698 2.7241e-05 deg
M 339.7490002264542 7.3236e-06 deg
tp 2459071.978840397695
(2020-Aug-10.47884040)
2.5957e-05 TDB
period 1270.672205368589
3.48
4.2798e-06
1.172e-08
d
yr
n .2833146097624551 9.5424e-10 deg/d
Q 2.831207018649818 6.3573e-09 au
  Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      7723 days (21.14 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46991  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:38  

Additional Information
 Earth MOID = .759454 au 
 Jupiter MOID = 2.62408 au 
 T_jup = 3.551 
[ 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 15.9   n/a MPO436477  

101940 (1999 RW23)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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