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102971 (1999 XP72)
Classification: Main-belt Asteroid          SPK-ID: 2102971
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151679651829598 5.6334e-08  
a 2.659503324489523 1.6411e-08 au
q 2.353213738210748 1.5629e-07 au
i 14.95818235666616 4.908e-06 deg
node 81.10836651560079 1.9575e-05 deg
peri 313.3811806301258 2.6687e-05 deg
M 339.6402639096891 1.9141e-05 deg
tp 2459290.091926768128
(2021-Mar-16.59192677)		 8.452e-05 TDB
period 1584.160693117987
4.34		 1.4663e-05
4.015e-08		 d
yr
n .2272496733216114 2.1035e-09 deg/d
Q 2.965792910768299 1.8301e-08 au
   Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7739 days (21.19 yr)  
   first obs. used      1999-11-04  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53302  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:32:55  

Additional Information
 Earth MOID = 1.38592 au 
 Jupiter MOID = 2.43734 au 
 T_jup = 3.329 
[ 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 14.79   n/a E2021B55  
diameter diameter 3.331 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102971 (1999 XP72)          Discovered 1999-Dec-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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