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JPL Small-Body Database Browser
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390228 (2012 XR42)
Classification: Main-belt Asteroid          SPK-ID: 2390228
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06113284616018114 6.6997e-08  
a 2.627029461656181 2.8811e-08 au
q 2.46643167371849 1.7012e-07 au
i 1.597520595364033 7.0203e-06 deg
node 269.8092421333122 0.00038259 deg
peri 180.581590738051 0.00039842 deg
M 166.8686698013098 0.00010737 deg
tp 2457879.611420972642
(2017-May-06.11142097)
0.00046523 TDB
period 1555.234357407288
4.26
2.5585e-05
7.005e-08
d
yr
n .2314763677161502 3.808e-09 deg/d
Q 2.787627249593872 3.0572e-08 au
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      6704 days (18.35 yr)  
   first obs. used      1999-11-10  
   last obs. used      2018-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59785  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:58:56  

Additional Information
 Earth MOID = 1.48299 au 
 Jupiter MOID = 2.32063 au 
 T_jup = 3.399 
[ 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 17.0   n/a MPO437597  

390228 (2012 XR42)          Discovered 2005-Jan-17 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

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