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275240 (2009 XH2)
Classification: Main-belt Asteroid          SPK-ID: 2275240
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1780134743627059 1.3275e-07  
a 2.550070157207633 4.0217e-08 au
q 2.09612330865445 3.2398e-07 au
i 13.64326276447629 9.1857e-06 deg
node 27.64921741014849 3.7456e-05 deg
peri 339.759574477977 5.2655e-05 deg
M 275.1012451597358 5.8355e-05 deg
tp 2459351.272420922691
(2021-May-16.77242092)
0.00024711 TDB
period 1487.396037430222
4.07
3.5186e-05
9.633e-08
d
yr
n .2420337226539697 5.7256e-09 deg/d
Q 3.004017005760815 4.7376e-08 au
  Orbit Determination Parameters
   # obs. used (total)      101  
   data-arc span      7312 days (20.02 yr)  
   first obs. used      1999-04-17  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .72499  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:50:49  

Additional Information
 Earth MOID = 1.10146 au 
 Jupiter MOID = 2.46663 au 
 T_jup = 3.379 
[ 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 16.4   n/a MPO433781  

275240 (2009 XH2)          Discovered 2009-Dec-11 by Mayhill at Mayhill
Reference: 20110418/Numbers.arcLast Updated: 2011-04-22

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