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85867 (1999 BY9)
Classification: Amor [NEO]          SPK-ID: 2085867
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 155 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3023714852082618 5.2912e-08  
a 1.829753698338639 5.2755e-09 au
q 1.276488355006675 9.3635e-08 au
i .9440571807471385 3.1231e-06 deg
node 254.3909637166036 0.00019566 deg
peri 287.4296313951075 0.00019598 deg
M 187.1429268360841 1.1396e-05 deg
tp 2459434.582254233785
(2021-Aug-08.08225423)
3.0262e-05 TDB
period 904.0394394273712
2.48
3.9098e-06
1.07e-08
d
yr
n .3982127153966071 1.7222e-09 deg/d
Q 2.383019041670603 6.8707e-09 au
  Orbit Determination Parameters
   # obs. used (total)      657  
   data-arc span      9158 days (25.07 yr)  
   first obs. used      1995-09-19  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5924  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-16 08:07:53  

Additional Information
 Earth MOID = .279811 au 
 Jupiter MOID = 2.57835 au 
 T_jup = 3.974 
[ 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 18.1   n/a MPO474744  
rotation period rot_per 700. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46-4, in press.]

85867 (1999 BY9)          Discovered 1999-Jan-23 by Korlevic, K. at Visnjan
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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