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JPL Small-Body Database Browser
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85872 (1999 BH31)
Classification: Main-belt Asteroid          SPK-ID: 2085872
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .154147106688447 4.9944e-08  
a 2.660666189082755 1.6595e-08 au
q 2.250532194171872 1.2966e-07 au
i 3.951102450922814 4.6079e-06 deg
node 321.4360030238186 7.7982e-05 deg
peri 227.4876162629072 7.9256e-05 deg
M 187.7374509677272 1.5482e-05 deg
tp 2459359.029335805791
(2021-May-24.52933581)
7.0728e-05 TDB
period 1585.199815189811
4.34
1.483e-05
4.06e-08
d
yr
n .2271007077785293 2.1247e-09 deg/d
Q 3.070800183993638 1.9153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      541  
   data-arc span      9453 days (25.88 yr)  
   first obs. used      1993-12-13  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59554  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:15:03  

Additional Information
 Earth MOID = 1.25415 au 
 Jupiter MOID = 1.90735 au 
 T_jup = 3.365 
[ 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 15.6   n/a MPO309785  
rotation period rot_per 66.475 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

85872 (1999 BH31)          Discovered 1999-Jan-19 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 BH31 = 2001 SK100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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