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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 161 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3023714665163753 4.874e-08  
a 1.829753696536398 4.8934e-09 au
q 1.276488387950929 8.631e-08 au
i .9440573983132159 3.1072e-06 deg
node 254.3909916358359 0.00019189 deg
peri 287.4296044864287 0.0001922 deg
M 187.1429287001815 1.1215e-05 deg
tp 2459434.582248911292
(2021-Aug-08.08224891)
2.9706e-05 TDB
period 904.039438091702
2.48
3.6265e-06
9.929e-09
d
yr
n .3982127159849448 1.5974e-09 deg/d
Q 2.383019005121867 6.373e-09 au
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      9198 days (25.18 yr)  
   first obs. used      1995-09-19  
   last obs. used      2020-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59408  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-25 05:21:47  

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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