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102859 (1999 WH1)
Classification: Main-belt Asteroid          SPK-ID: 2102859
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2404732556699559 5.6401e-08  
a 2.340849623299915 1.1293e-08 au
q 1.777937893351195 1.3826e-07 au
i 4.179137126961614 4.0298e-06 deg
node 49.09859787024034 7.3275e-05 deg
peri 335.5941968998608 7.4476e-05 deg
M 345.8814401295786 1.6189e-05 deg
tp 2459251.803453305047
(2021-Feb-06.30345330)
5.9132e-05 TDB
period 1308.153477360689
3.58
9.466e-06
2.592e-08
d
yr
n .2751970668811207 1.9914e-09 deg/d
Q 2.903761353248635 1.4008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      7726 days (21.15 yr)  
   first obs. used      1999-11-14  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:43:57  

Additional Information
 Earth MOID = .781767 au 
 Jupiter MOID = 2.55126 au 
 T_jup = 3.521 
[ 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 16.66   n/a E2021B55  

102859 (1999 WH1)          Discovered 1999-Nov-28 by Klet at Klet
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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