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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538162291701896 4.5957e-08  
a 2.661389420881023 1.5014e-08 au
q 2.252024535807669 1.2127e-07 au
i 3.951064444484295 4.1489e-06 deg
node 321.4231937499806 7.5279e-05 deg
peri 227.45228961 7.6476e-05 deg
M 278.5894256783845 1.5125e-05 deg
tp 2459359.124027833625
(2021-May-24.62402783)
6.777e-05 TDB
period 1585.846201134417
4.34
1.342e-05
3.674e-08
d
yr
n .2270081422413334 1.921e-09 deg/d
Q 3.070754305954376 1.7324e-08 au
  Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      9813 days (26.87 yr)  
   first obs. used      1993-12-13  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5814  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:31  

Additional Information
 Earth MOID = 1.25526 au 
 Jupiter MOID = 1.9061 au 
 T_jup = 3.365 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457149.5 (2015-May-07.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1542546271010678 4.6042e-08  
q 2.250001781334127 1.2149e-07 au
tp 2457775.159061439643
(2017-Jan-21.65906144)
6.3247e-05 TDB
node 321.4893986584005 7.5214e-05 deg
peri 227.72439262408 7.639e-05 deg
i 3.953593043310151 4.1514e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      9813 days (26.87 yr)  
   first obs. used      1993-12-13  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5814  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:31  

Additional Information
 Jupiter MOID = 1.9061 au 
 T_jup = 3.365 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.119858719139417E-15 -5.56376179179683E-15 7.107054668485177E-13 -4.241060737653222E-15 1.840419195759763E-13 -6.256093015842493E-16
q -5.56376179179683E-15 1.476077404855812E-14 -1.729520601046193E-12 7.529890503108421E-15 -4.666884795302377E-13 1.994505291439026E-15
tp 7.107054668485177E-13 -1.729520601046193E-12 4.000168306865019E-9 1.589715926724613E-11 8.784867674037394E-10 2.822086801094538E-14
node -4.241060737653222E-15 7.529890503108421E-15 1.589715926724613E-11 5.657182753287391E-9 -5.63986680375783E-9 4.17037361581279E-11
peri 1.840419195759763E-13 -4.666884795302377E-13 8.784867674037394E-10 -5.63986680375783E-9 5.835487382143222E-9 -4.164006193047232E-11
i -6.256093015842493E-16 1.994505291439026E-15 2.822086801094538E-14 4.17037361581279E-11 -4.164006193047232E-11 1.723371958483579E-11

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 1.90399593124058 1.90399554611543 1.90399631636553 2.10339098841391 1.88003250381828 2425224.906884090 2.15661274490908 162.747933781902 23.777329852147 86.3205623695667 2309590.40887318 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:33 2020-Nov-12 20:59
1976-Jan-12 23:47 < 00:01 Jupiter 1.9522797725254 1.95227919266898 1.95228035238149 2.14367797294833 1.93070678282083 2442790.491282863 0.988228063048728 63.568811181878 11.8700763506638 -84.44288188038 1886172.14125892 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:33 2020-Nov-12 20:59
2058-Mar-15 20:21 00:01 Jupiter 1.9176797017403 1.91767926169856 1.91768014178313 2.19681149668152 1.98559766149971 2472803.347855835 1.05115079147728 109.127116368031 19.2673744785557 88.738849444155 2542812.40220568 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:33 2020-Nov-12 20:59
2106-Apr-17 14:25 00:02 Jupiter 1.91989658308912 1.91989612855094 1.91989703762709 2.03763946696228 1.80820683275203 2490367.100404585 2.24395837259909 110.966743820556 22.3097172813126 87.6983968162357 2217766.7627854 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:33 2020-Nov-12 20:59
2188-Jun-20 04:13 00:04 Jupiter 1.9456173378433 1.94561600933089 1.94561866637638 2.35209661990686 2.15908789938796 2520381.675607888 4.21680595356883 352.572171818378 15.0685922797531 -89.1997248177159 2760012.19012274 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:33 2020-Nov-12 20:59

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