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85864 (1999 BJ7)
Classification: Main-belt Asteroid          SPK-ID: 2085864
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976209468340305 5.2586e-08  
a 2.43196288661427 1.0632e-08 au
q 1.951356078296336 1.3259e-07 au
i 2.452854542359275 3.9246e-06 deg
node 90.23748330921089 0.00012271 deg
peri 247.75441243584 0.00012308 deg
M 352.4098749855568 1.2064e-05 deg
tp 2459029.706550699191
(2020-Jun-29.20655070)
4.6516e-05 TDB
period 1385.268125584377
3.79
9.0843e-06
2.487e-08
d
yr
n .2598774875067117 1.7042e-09 deg/d
Q 2.912569694932203 1.2733e-08 au
  Orbit Determination Parameters
   # obs. used (total)      641  
   data-arc span      8477 days (23.21 yr)  
   first obs. used      1996-03-12  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:40:20  

Additional Information
 Earth MOID = .94379 au 
 Jupiter MOID = 2.47376 au 
 T_jup = 3.479 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456702.5 (2014-Feb-14.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1963572780073349 5.2388e-08  
q 1.956060857945003 1.3195e-07 au
tp 2456259.491464199181
(2012-Nov-27.99146420)
4.1589e-05 TDB
node 90.27657393728424 0.0001225 deg
peri 247.9801581114952 0.00012289 deg
i 2.453993937520671 3.927e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      641  
   data-arc span      8477 days (23.21 yr)  
   first obs. used      1996-03-12  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:40:20  

Additional Information
 Jupiter MOID = 2.47376 au 
 T_jup = 3.479 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.744522392201301E-15 -6.902401842989101E-15 3.223848031915547E-13 3.312683034538642E-14 5.430989234503841E-14 -8.786451239686838E-16
q -6.902401842989101E-15 1.741045455570151E-14 -7.477095333315058E-13 -8.175651531819989E-14 -1.20683104837373E-13 2.332083488110385E-15
tp 3.223848031915547E-13 -7.477095333315058E-13 1.729604566462531E-9 3.846195556334124E-12 4.390454156699179E-10 2.59735931214195E-13
node 3.312683034538642E-14 -8.175651531819989E-14 3.846195556334124E-12 1.500703336799977E-8 -1.499225914302818E-8 -3.143002683090931E-11
peri 5.430989234503841E-14 -1.20683104837373E-13 4.390454156699179E-10 -1.499225914302818E-8 1.510104432034329E-8 3.147369971625886E-11
i -8.786451239686838E-16 2.332083488110385E-15 2.59735931214195E-13 -3.143002683090931E-11 3.147369971625886E-11 1.542168577418997E-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 16.1   n/a MPO385351  

85864 (1999 BJ7)          Discovered 1999-Jan-21 by Klet at Klet
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 BJ7 = 2001 QZ290 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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