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390208 (2012 XV8)
Classification: Main-belt Asteroid          SPK-ID: 2390208
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05451263899020317 4.4772e-08  
a 2.664325754390487 2.394e-08 au
q 2.519086326389098 1.2162e-07 au
i 2.704507438737456 6.436e-06 deg
node 158.2410048732085 9.9034e-05 deg
peri 310.1661476344505 0.00011729 deg
M 220.1825595178371 6.3632e-05 deg
tp 2459617.433364429508
(2022-Feb-06.93336443)
0.00028437 TDB
period 1588.471441250254
4.35
2.1409e-05
5.861e-08
d
yr
n .2266329696910706 3.0545e-09 deg/d
Q 2.809565182391876 2.5245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      7151 days (19.58 yr)  
   first obs. used      2001-03-18  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63709  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:42:54  

Additional Information
 Earth MOID = 1.53684 au 
 Jupiter MOID = 2.24193 au 
 T_jup = 3.380 
[ 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 MPO476836  
rotation period rot_per 3.89 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

390208 (2012 XV8)          Discovered 2005-Jan-19 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 2012 XV8 = 2007 TK336 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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