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100656 (1997 WD17)
Classification: Main-belt Asteroid          SPK-ID: 2100656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1790245825672336 5.6995e-08  
a 2.53120928494928 1.3058e-08 au
q 2.07806059932093 1.4216e-07 au
i 6.201634429247483 4.9216e-06 deg
node 249.202087773753 6.3141e-05 deg
peri 247.2214837553627 6.6001e-05 deg
M 185.8262949327162 2.0398e-05 deg
tp 2459912.156792358252
(2022-Nov-28.65679236)
8.4885e-05 TDB
period 1470.924931808744
4.03
1.1382e-05
3.116e-08
d
yr
n .2447439649808103 1.8939e-09 deg/d
Q 2.984357970577631 1.5396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      9771 days (26.75 yr)  
   first obs. used      1993-10-13  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57205  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:04:59  

Additional Information
 Earth MOID = 1.10122 au 
 Jupiter MOID = 2.10352 au 
 T_jup = 3.420 
[ 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 15.58   n/a E2021B55  
rotation period rot_per 12.0383 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.]

100656 (1997 WD17)          Discovered 1997-Nov-23 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1997 WD17 = 2001 TU95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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