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101459 (1998 WD7)
Classification: Main-belt Asteroid          SPK-ID: 2101459
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842451952309104 3.4556e-08  
a 2.411908370352025 9.3898e-09 au
q 1.967525841777449 8.5721e-08 au
i 2.536591309800387 3.8455e-06 deg
node 35.26012961690839 9.4591e-05 deg
peri 44.65285593195954 9.5267e-05 deg
M 253.373249708574 1.2737e-05 deg
tp 2459405.731601925505
(2021-Jul-10.23160193)
4.9459e-05 TDB
period 1368.168647121494
3.75
7.9896e-06
2.187e-08
d
yr
n .2631254566148757 1.5366e-09 deg/d
Q 2.8562908989266 1.112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      8002 days (21.91 yr)  
   first obs. used      1998-11-18  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52909  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:29  

Additional Information
 Earth MOID = .984122 au 
 Jupiter MOID = 2.38942 au 
 T_jup = 3.494 
[ 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 16.4   n/a MPO325162  

101459 (1998 WD7)          Discovered 1998-Nov-19 by Kawasato, N. at Uenohara
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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