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70972 (1999 XM20)
Classification: Main-belt Asteroid          SPK-ID: 2070972
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06266166274073111 3.8689e-08  
a 2.402027385913262 8.7472e-09 au
q 2.251512355963165 9.2936e-08 au
i 7.353470684180755 3.8183e-06 deg
node 64.56674622444372 2.7271e-05 deg
peri 173.2035384622057 4.062e-05 deg
M 348.8274577774773 2.9165e-05 deg
tp 2459042.700234330813
(2020-Jul-12.20023433)
0.00011009 TDB
period 1359.769697577605
3.72
7.4276e-06
2.034e-08
d
yr
n .26475071524342 1.4462e-09 deg/d
Q 2.552542415863358 9.2954e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1601  
   data-arc span      7566 days (20.71 yr)  
   first obs. used      1999-10-02  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54736  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:37:35  

Additional Information
 Earth MOID = 1.23929 au 
 Jupiter MOID = 2.43677 au 
 T_jup = 3.511 
[ 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 14.9   n/a MPO333407  
diameter diameter 2.507 km 0.667 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.445   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70972 (1999 XM20)          Discovered 1999-Dec-05 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XM20 = 2001 DC10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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