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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2404732554274706 5.6401e-08  
a 2.340849627007239 1.1293e-08 au
q 1.777937896734628 1.3826e-07 au
i 4.179137074203473 4.0298e-06 deg
node 49.09859868156654 7.3275e-05 deg
peri 335.5941959094084 7.4476e-05 deg
M 345.8814399616513 1.6189e-05 deg
tp 2459251.803454037132
(2021-Feb-06.30345404)
5.9132e-05 TDB
period 1308.153480468374
3.58
9.466e-06
2.592e-08
d
yr
n .275197066227355 1.9914e-09 deg/d
Q 2.90376135727985 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54428  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:33:26  

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

[ 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
2135-Dec-25 02:57 < 00:01 Iris 0.0246352385192199 0.0246119987603939 0.0246584782813448 4.1489112662262 4.14891120998144 2501210.622780596 0.629714915848655 1158.33426913982 24.3488027774367 -0.599559806431278 3550.27961341566 T 17 CATAB v2.0f-lin.ifort 2021-Feb-24 19:33:27 2021-Feb-24 19:33
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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