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118965 (2000 WA138)
Classification: Main-belt Asteroid          SPK-ID: 2118965
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195092970299059 5.4946e-08  
a 2.9003909073612 1.785e-08 au
q 2.263728138174412 1.5466e-07 au
i 7.908903354396753 4.358e-06 deg
node 45.48976030964417 3.2788e-05 deg
peri 142.1391972391505 3.3491e-05 deg
M 223.6181453506894 8.3274e-06 deg
tp 2459683.998114145025
(2022-Apr-14.49811414)
4.4725e-05 TDB
period 1804.19397965309
4.94
1.6655e-05
4.56e-08
d
yr
n .1995350855062828 1.842e-09 deg/d
Q 3.537053676547989 2.1768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1080  
   data-arc span      6930 days (18.97 yr)  
   first obs. used      2000-11-21  
   last obs. used      2019-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58089  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:08:34  

Additional Information
 Earth MOID = 1.27024 au 
 Jupiter MOID = 1.43793 au 
 T_jup = 3.237 
[ 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 14.4   n/a MPO417619  
rotation period rot_per 3.655 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

118965 (2000 WA138)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2000 WA138 = 2002 CZ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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