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372712 (2009 XG2)
Classification: Main-belt Asteroid          SPK-ID: 2372712
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05054452148512262 5.7497e-08  
a 2.898171935732661 4.136e-08 au
q 2.751685222059443 1.6602e-07 au
i 15.53693387820527 6.829e-06 deg
node 260.4623195379176 2.3489e-05 deg
peri 166.1391454782173 8.5188e-05 deg
M 75.30651794301123 7.8078e-05 deg
tp 2458623.523122311174
(2019-May-20.02312231)
0.00039228 TDB
period 1802.123902086114
4.93
3.8577e-05
1.056e-07
d
yr
n .1997642890054724 4.2763e-09 deg/d
Q 3.04465864940588 4.345e-08 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      5978 days (16.37 yr)  
   first obs. used      2003-09-20  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 02:14:34  

Additional Information
 Earth MOID = 1.76825 au 
 Jupiter MOID = 2.21783 au 
 T_jup = 3.232 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457744.5 (2016-Dec-22.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05029585142526062 5.7381e-08  
q 2.751458778451378 1.6574e-07 au
tp 2458627.998225099419
(2019-May-24.49822510)
0.00039447 TDB
node 260.4722441575522 2.349e-05 deg
peri 167.0952277437482 8.5703e-05 deg
i 15.53751996788574 6.8292e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      5978 days (16.37 yr)  
   first obs. used      2003-09-20  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 02:14:34  

Additional Information
 Jupiter MOID = 2.21783 au 
 T_jup = 3.232 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.29261625723777E-15 -9.245188515018258E-15 -8.441108908196173E-13 -3.373806699450863E-16 -2.740129256509631E-13 -6.612957038827622E-15
q -9.245188515018258E-15 2.74695315982156E-14 -6.034952374420904E-13 3.215208989139902E-15 -6.106857485672487E-15 2.275015438955253E-14
tp -8.441108908196173E-13 -6.034952374420904E-13 1.556088915261629E-7 1.204600225142455E-10 3.251216634487654E-8 1.939244694541201E-11
node -3.373806699450863E-16 3.215208989139902E-15 1.204600225142455E-10 5.518028575382175E-10 -5.060083412873555E-10 1.300203420014389E-11
peri -2.740129256509631E-13 -6.106857485672487E-15 3.251216634487654E-8 -5.060083412873555E-10 7.344988284207172E-9 -8.774459693071273E-12
i -6.612957038827622E-15 2.275015438955253E-14 1.939244694541201E-11 1.300203420014389E-11 -8.774459693071273E-12 4.663787630015037E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO334916  
diameter diameter 5.416 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

372712 (2009 XG2)          Discovered 2009-Dec-11 by Mayhill at Mayhill
Reference: Last Updated: 2013-09-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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