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90965 (1997 WC23)
Classification: Main-belt Asteroid          SPK-ID: 2090965
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144458081480641 4.3234e-08  
a 2.339306461485276 1.0089e-08 au
q 2.071582642994605 1.0171e-07 au
i 7.517482980589587 5.0005e-06 deg
node 33.66849005130465 3.5684e-05 deg
peri 7.838401353029236 4.2458e-05 deg
M 224.7664927716264 2.3756e-05 deg
tp 2459887.420217713904
(2022-Nov-03.92021771)
8.765e-05 TDB
period 1306.860126599788
3.58
8.4542e-06
2.315e-08
d
yr
n .2754694191616776 1.782e-09 deg/d
Q 2.607030279975946 1.1243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      831  
   data-arc span      8645 days (23.67 yr)  
   first obs. used      1997-11-02  
   last obs. used      2021-07-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52551  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:16:57  

Additional Information
 Earth MOID = 1.07925 au 
 Jupiter MOID = 2.78017 au 
 T_jup = 3.545 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.62   n/a MPO637237  
rotation period rot_per 61.3089 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.]

90965 (1997 WC23)          Discovered 1997-Nov-25 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1997 WC23 = 1999 GK43 = 2001 XW253 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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