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385177 (2013 WB12)
Classification: Main-belt Asteroid          SPK-ID: 2385177
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .314987196399826 8.5814e-08  
a 2.589561615428736 1.98e-08 au
q 1.773882862280234 2.268e-07 au
i 12.12453307286875 9.6744e-06 deg
node 197.3301931319291 2.0596e-05 deg
peri 166.3237136332499 2.2534e-05 deg
M 280.2194088531119 7.2056e-06 deg
tp 2459537.812588636903
(2021-Nov-19.31258864)
3.2208e-05 TDB
period 1522.081124790231
4.17
1.7457e-05
4.779e-08
d
yr
n .2365182736561524 2.7127e-09 deg/d
Q 3.405240368577239 2.6037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      8659 days (23.71 yr)  
   first obs. used      1996-09-09  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:24  

Additional Information
 Earth MOID = .773392 au 
 Jupiter MOID = 2.07653 au 
 T_jup = 3.319 
[ 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 16.95   n/a E2021B25  
rotation period rot_per 4.32 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

385177 (2013 WB12)          Discovered 2008-Jun-03 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-01-21

[ show close-approach data ]
Alternate Designations
 2013 WB12 = 2008 LM7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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