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213404 (2001 WH3)
Classification: Main-belt Asteroid          SPK-ID: 2213404
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2396575889059418 4.3506e-08  
a 3.123373847269559 2.6854e-08 au
q 2.374833601781061 1.2873e-07 au
i 20.10664276503417 9.0629e-06 deg
node 221.7028546922945 1.2421e-05 deg
peri 270.3354506593025 2.343e-05 deg
M 104.5145851662361 1.7385e-05 deg
tp 2458615.159220587148
(2019-May-11.65922059)
9.6638e-05 TDB
period 2016.203578222706
5.52
2.6002e-05
7.119e-08
d
yr
n .1785533980240934 2.3028e-09 deg/d
Q 3.871914092758057 3.329e-08 au
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      6849 days (18.75 yr)  
   first obs. used      2001-10-14  
   last obs. used      2020-07-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55979  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:42:34  

Additional Information
 Earth MOID = 1.48832 au 
 Jupiter MOID = 1.78506 au 
 T_jup = 3.079 
[ 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 15.13   n/a E2021B55  
rotation period rot_per 21.9553 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

213404 (2001 WH3)          Discovered 2001-Nov-16 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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