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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538162195564006 4.746e-08  
a 2.661389417458182 1.5627e-08 au
q 2.252024558497353 1.2443e-07 au
i 3.951064155343344 4.1653e-06 deg
node 321.4231762355781 7.758e-05 deg
peri 227.452304481765 7.8789e-05 deg
M 278.5894294530711 1.5777e-05 deg
tp 2459359.124010513801
(2021-May-24.62401051)
7.0846e-05 TDB
period 1585.846198075057
4.34
1.3968e-05
3.824e-08
d
yr
n .2270081426792697 1.9994e-09 deg/d
Q 3.07075427641901 1.8031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      9538 days (26.11 yr)  
   first obs. used      1993-12-13  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57954  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:40:20  

Additional Information
 Earth MOID = 1.25526 au 
 Jupiter MOID = 1.9061 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-August); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1927-Dec-10 09:46 00:02 Jupiter 1.90399596396824 1.90399556620391 1.90399636173246 2.10339094202589 1.88003245598646 2425224.907004219 2.25061283240123 168.076701984655 24.4586005767408 86.4420073522199 2254053.25394915 T 21 CATAB v2.0f-lin.ifort 2020-Feb-23 20:40:35 2020-Feb-23 20:40
1976-Jan-12 23:48 00:01 Jupiter 1.95227983193776 1.95227921607017 1.95228044780501 2.14367816616409 1.93070700418838 2442790.491331264 1.02935921961703 64.8288043915264 11.9248994744663 -84.2765336210548 1781453.00692717 T 21 CATAB v2.0f-lin.ifort 2020-Feb-23 20:40:35 2020-Feb-23 20:40
2058-Mar-15 20:21 00:01 Jupiter 1.91767974481041 1.91767928342424 1.91768020619779 2.196811629325 1.98559781324893 2472803.347797298 1.09551903861674 112.902447859121 19.8887041581481 88.6563707686514 2479878.80795846 T 21 CATAB v2.0f-lin.ifort 2020-Feb-23 20:40:35 2020-Feb-23 20:40
2106-Apr-17 14:24 00:02 Jupiter 1.91989659370335 1.91989613855238 1.91989704885411 2.03763953040926 1.80820690559832 2490367.100271294 2.34224341621917 116.146804608534 23.188926745995 87.2211046833317 2177735.05556339 T 21 CATAB v2.0f-lin.ifort 2020-Feb-23 20:40:35 2020-Feb-23 20:40
2188-Jun-20 04:13 00:04 Jupiter 1.94561745777392 1.94561606290776 1.94561885266265 2.35209717634831 2.15908851800083 2520381.675372409 4.39979547965346 367.072640634169 15.5028740693042 -89.2060167152556 2705982.82440666 T 21 CATAB v2.0f-lin.ifort 2020-Feb-23 20:40:35 2020-Feb-23 20:40

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