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JPL Small-Body Database Browser
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390243 (2012 XK78)
Classification: Main-belt Asteroid          SPK-ID: 2390243
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723577374114019 9.328e-08  
a 2.449613265452028 2.4773e-08 au
q 2.027403465485761 2.191e-07 au
i 4.617997384469431 8.8446e-06 deg
node 102.6176746018145 7.0994e-05 deg
peri 196.6564943215119 7.5293e-05 deg
M 347.7942045253997 1.9105e-05 deg
tp 2458647.979736751957
(2019-Jun-13.47973675)
7.4199e-05 TDB
period 1400.376179190748
3.83
2.1243e-05
5.816e-08
d
yr
n .2570737815663485 3.8997e-09 deg/d
Q 2.871823065418295 2.9043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      4981 days (13.64 yr)  
   first obs. used      2006-01-07  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55429  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:06:48  

Additional Information
 Earth MOID = 1.01144 au 
 Jupiter MOID = 2.3361 au 
 T_jup = 3.471 
[ 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 17.3   n/a MPO440684  

390243 (2012 XK78)          Discovered 2006-Jan-07 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 2012 XK78 = 2007 HJ49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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