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20101 (1994 XM2)
Classification: Main-belt Asteroid          SPK-ID: 2020101
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04366165449195336 3.7693e-08  
a 3.141165650216672 1.9046e-08 au
q 3.00401716089492 1.2338e-07 au
i 8.494067960301306 4.1005e-06 deg
node 84.31109359778186 2.9075e-05 deg
peri 244.7589995803409 5.8073e-05 deg
M 295.5547138950313 5.1915e-05 deg
tp 2459364.518404358710
(2021-May-30.01840436)
0.00029412 TDB
period 2033.455563463345
5.57
1.8495e-05
5.064e-08
d
yr
n .1770385379785995 1.6102e-09 deg/d
Q 3.278314139538424 1.9878e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1786  
   data-arc span      9436 days (25.83 yr)  
   first obs. used      1994-12-01  
   last obs. used      2020-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49446  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:04:47  

Additional Information
 Earth MOID = 2.00401 au 
 Jupiter MOID = 1.89969 au 
 T_jup = 3.192 
[ 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 12.8   n/a MPO474030  
diameter diameter 19.459 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.029   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20101 (1994 XM2)          Discovered 1994-Dec-01 by Spacewatch at Kitt Peak
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 XM2 = 1999 RG35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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