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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1535502599703444 4.2645e-08  
a 2.660946650316266 1.1966e-08 au
q 2.252357600392986 1.1511e-07 au
i 3.951169059643085 4.0708e-06 deg
node 321.4217892708731 5.7297e-05 deg
peri 227.4243221682795 5.8558e-05 deg
M 8.499286519772694 1.1101e-05 deg
tp 2459359.068895073055
(2021-May-24.56889507)
4.8902e-05 TDB
period 1585.450466030461
4.34
1.0695e-05
2.928e-08
d
yr
n .2270648044283228 1.5317e-09 deg/d
Q 3.069535700239546 1.3804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      10039 days (27.49 yr)  
   first obs. used      1993-12-13  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5406  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:27:15  

Additional Information
 Earth MOID = 1.25638 au 
 Jupiter MOID = 1.90536 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 15.68   n/a MPO637177  
rotation period rot_per 66.475 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:
[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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