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390260 (2012 XU131)
Classification: Main-belt Asteroid          SPK-ID: 2390260
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1043586126261981 8.7344e-08  
a 2.563694034786939 4.4981e-08 au
q 2.296150482118514 2.0535e-07 au
i 4.531005813472036 7.3546e-06 deg
node 114.7511341923128 9.7464e-05 deg
peri 238.9342901179413 0.00010648 deg
M 5.75683300486794 4.8165e-05 deg
tp 2458976.523883125635
(2020-May-07.02388313)
0.00020031 TDB
period 1499.331675501585
4.10
3.9459e-05
1.08e-07
d
yr
n .2401069795844644 6.3191e-09 deg/d
Q 2.831237587455364 4.9675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      5350 days (14.65 yr)  
   first obs. used      2003-07-25  
   last obs. used      2018-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53903  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:59:05  

Additional Information
 Earth MOID = 1.29452 au 
 Jupiter MOID = 2.56362 au 
 T_jup = 3.421 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO472011  
rotation period rot_per 1.78 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

390260 (2012 XU131)          Discovered 2008-Dec-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

Alternate Designations
 2012 XU131 = 2008 XJ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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