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150340 (1999 XH31)
Classification: Mars-crossing Asteroid          SPK-ID: 2150340
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3196700765119786 3.7836e-08  
a 2.2489689786028 4.9871e-09 au
q 1.530040893139776 8.3745e-08 au
i 3.743079170860176 4.2464e-06 deg
node 247.0079037510825 5.1335e-05 deg
peri 123.665900191509 5.1743e-05 deg
M 134.6557043178664 5.0668e-06 deg
tp 2458739.717603235594
(2019-Sep-13.21760324)
1.7033e-05 TDB
period 1231.894806651549
3.37
4.0976e-06
1.122e-08
d
yr
n .2922327442702085 9.7204e-10 deg/d
Q 2.967897064065823 6.5813e-09 au
  Orbit Determination Parameters
   # obs. used (total)      934  
   data-arc span      23488 days (64.31 yr)  
   first obs. used      1955-10-25  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 13:52:55  

Additional Information
 Earth MOID = .532907 au 
 Jupiter MOID = 2.51526 au 
 T_jup = 3.557 
[ 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 16.10   n/a E2021B55  

150340 (1999 XH31)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

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