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392974 (2012 XK40)
Classification: Main-belt Asteroid          SPK-ID: 2392974
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0757148276187754 7.6904e-08  
a 2.618546763004792 3.0948e-08 au
q 2.420283946232182 2.1006e-07 au
i 1.957315940697109 5.9893e-06 deg
node 262.6106080820871 0.00025294 deg
peri 318.7359062629342 0.00025731 deg
M 137.3412347976179 5.1605e-05 deg
tp 2458410.044224532383
(2018-Oct-18.54422453)
0.00021785 TDB
period 1547.707645715947
4.24
2.7438e-05
7.512e-08
d
yr
n .2326020686119111 4.1236e-09 deg/d
Q 2.816809579777403 3.3291e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      6241 days (17.09 yr)  
   first obs. used      2003-09-22  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53251  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:21:03  

Additional Information
 Earth MOID = 1.41208 au 
 Jupiter MOID = 2.15989 au 
 T_jup = 3.401 
[ 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 16.8   n/a MPO437609  

392974 (2012 XK40)          Discovered 2007-Oct-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2012 XK40 = 2011 SG94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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