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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07571480962122422 7.7117e-08  
a 2.618546736494884 4.002e-08 au
q 2.420283968856896 2.1354e-07 au
i 1.9573157321533 6.344e-06 deg
node 262.6106490738514 0.00027325 deg
peri 318.7359145630942 0.00027838 deg
M 137.3411877983346 5.4257e-05 deg
tp 2458410.044435557704
(2018-Oct-18.54443556)
0.00023229 TDB
period 1547.707622212688
4.24
3.5481e-05
9.714e-08
d
yr
n .2326020721441716 5.3324e-09 deg/d
Q 2.816809504132872 4.305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      5765 days (15.78 yr)  
   first obs. used      2003-09-22  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55394  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:09:23  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1962-Oct-01 19:37 00:03 Hebe 0.0390413895261873 0.0390188760834643 0.0390639150997138 6.92937072261021 6.92937069963082 2437939.317300040 3.14142194596442 1562.59085014383 66.1045267840326 -44.1198810653892 61551.9646574244 T 10 CATAB v2.0f-lin.ifort 2019-Sep-24 07:09:25 2019-Sep-24 07:09
2036-Jul-30 15:39 < 00:01 Eunom 0.00810267476094397 0.00809836422714967 0.00810700992877125 5.80265567616636 5.8026553776015 2464905.152073064 0.877304632102223 782.789249818421 76.0137517256202 -75.0035301830747 15399.270392425 T 10 CATAB v2.0f-lin.ifort 2019-Sep-24 07:09:25 2019-Sep-24 07:09

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