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85863 (1999 BG)
Classification: Main-belt Asteroid          SPK-ID: 2085863
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05832206767981556 4.9326e-08  
a 2.414851467365312 1.0179e-08 au
q 2.274012336648931 1.1979e-07 au
i 6.584361708092206 5.1289e-06 deg
node 324.9814051243496 3.7485e-05 deg
peri 195.0168298759326 5.2349e-05 deg
M 218.9874816222426 3.6948e-05 deg
tp 2459537.394839849316
(2021-Nov-18.89483985)
0.00014147 TDB
period 1370.673643512783
3.75
8.6664e-06
2.373e-08
d
yr
n .2626445775067117 1.6606e-09 deg/d
Q 2.555690598081694 1.0773e-08 au
  Orbit Determination Parameters
   # obs. used (total)      840  
   data-arc span      9429 days (25.82 yr)  
   first obs. used      1995-01-04  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55773  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:33  

Additional Information
 Earth MOID = 1.28362 au 
 Jupiter MOID = 2.43134 au 
 T_jup = 3.506 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456970.5 (2014-Nov-09.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05728592474303387 4.9357e-08  
q 2.276775020267062 1.1975e-07 au
tp 2456793.405447790303
(2014-May-15.90544779)
0.00014087 TDB
node 325.0695812561959 3.75e-05 deg
peri 194.5206671080806 5.2839e-05 deg
i 6.582463251580732 5.1282e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      840  
   data-arc span      9429 days (25.82 yr)  
   first obs. used      1995-01-04  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55773  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:33  

Additional Information
 Jupiter MOID = 2.43134 au 
 T_jup = 3.506 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.436147352709943E-15 -5.891308975051939E-15 3.318559442795636E-13 -2.682818120072673E-15 1.517595411427186E-13 1.748185198114411E-15
q -5.891308975051939E-15 1.433944375402862E-14 -6.345579625603122E-13 5.878017176864528E-15 -3.219413870746693E-13 -4.185790049304713E-15
tp 3.318559442795636E-13 -6.345579625603122E-13 1.984396837518599E-8 -1.689521534464724E-11 5.257331661364518E-9 7.664321775743272E-12
node -2.682818120072673E-15 5.878017176864528E-15 -1.689521534464724E-11 1.406283799176443E-9 -1.400774290539685E-9 3.538799772501429E-11
peri 1.517595411427186E-13 -3.219413870746693E-13 5.257331661364518E-9 -1.400774290539685E-9 2.791934958539991E-9 -3.310369901083072E-11
i 1.748185198114411E-15 -4.185790049304713E-15 7.664321775743272E-12 3.538799772501429E-11 -3.310369901083072E-11 2.629868275197844E-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 15.1   n/a MPO436375  
rotation period rot_per 5.83 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:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

85863 (1999 BG)          Discovered 1999-Jan-16 by Kobayashi, T. at Oizumi
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
1994-Dec-11 14:37 < 00:01 Eunom 0.047820257379191 0.0478190576974991 0.0478214570976329 4.65513630948689 4.65513624642753 2449698.108982979 0.416408531425014 116.98888884826 45.0798519924749 68.6820505918226 149379.796842456 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:35 2020-Nov-12 20:59

Alternate Designations
 1999 BG = 1995 AY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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