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187926 (2001 BH31)
Classification: Main-belt Asteroid          SPK-ID: 2187926
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09539402680878183 5.1723e-08  
a 2.186086730458247 9.6017e-09 au
q 1.977547114286591 1.1698e-07 au
i 4.173471344744054 5.0809e-06 deg
node 153.3594572086152 6.3434e-05 deg
peri 347.810973002978 6.8692e-05 deg
M 49.81569554669237 2.5933e-05 deg
tp 2459037.133424016177
(2020-Jul-06.63342402)
8.4849e-05 TDB
period 1180.591111069637
3.23
7.778e-06
2.13e-08
d
yr
n .3049319926471694 2.009e-09 deg/d
Q 2.394626346629904 1.0518e-08 au
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      8001 days (21.91 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50136  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:46:02  

Additional Information
 Earth MOID = .990304 au 
 Jupiter MOID = 2.60617 au 
 T_jup = 3.667 
[ 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 16.60   n/a E2021B55  
rotation period rot_per 2.695 h n/a LCDB (Rev. 2020-October); 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.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

187926 (2001 BH31)          Discovered 2001-Jan-20 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 2001 BH31 = 1998 FV59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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