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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07571482726468486 7.6875e-08  
a 2.618546764132264 2.9381e-08 au
q 2.420283948201491 2.0956e-07 au
i 1.957316480038267 5.9172e-06 deg
node 262.6106491731182 0.00024177 deg
peri 318.735864094896 0.00024618 deg
M 137.3412354805633 5.1191e-05 deg
tp 2458410.044221214922
(2018-Oct-18.54422121)
0.00021558 TDB
period 1547.707646715545
4.24
2.6048e-05
7.132e-08
d
yr
n .2326020684616834 3.9148e-09 deg/d
Q 2.816809580063038 3.1605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      182  
   data-arc span      6263 days (17.15 yr)  
   first obs. used      2003-09-22  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53535  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:12:26  

Additional Information
 Earth MOID = 1.41208 au 
 Jupiter MOID = 2.15989 au 
 T_jup = 3.401 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457386.5 (2015-Dec-30.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0747452713886789 7.6808e-08  
q 2.424106699943598 2.0923e-07 au
tp 2456864.223465729864
(2014-Jul-25.72346573)
0.00021034 TDB
node 262.6528424714477 0.00024207 deg
peri 319.4830796637924 0.00024668 deg
i 1.955227607658885 5.9163e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      182  
   data-arc span      6263 days (17.15 yr)  
   first obs. used      2003-09-22  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53535  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:12:26  

Additional Information
 Jupiter MOID = 2.15989 au 
 T_jup = 3.401 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.899537991823051E-15 -1.594217078902846E-14 -8.394156618420162E-12 1.687269166812713E-14 -1.9005764684731E-12 -6.904561443938106E-16
q -1.594217078902846E-14 4.377741323456688E-14 2.381996612030616E-11 -4.708956108738306E-14 5.438609428879244E-12 2.182156283303734E-15
tp -8.394156618420162E-12 2.381996612030616E-11 4.424127603987257E-8 2.23703158808445E-11 1.007447867928776E-8 2.998931628633925E-12
node 1.687269166812713E-14 -4.708956108738306E-14 2.23703158808445E-11 5.85990954337931E-8 -5.856018986279034E-8 -4.496763042484951E-10
peri -1.9005764684731E-12 5.438609428879244E-12 1.007447867928776E-8 -5.856018986279034E-8 6.084985104141195E-8 4.501117100551881E-10
i -6.904561443938106E-16 2.182156283303734E-15 2.998931628633925E-12 -4.496763042484951E-10 4.501117100551881E-10 3.500223983454086E-11

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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