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16972 Neish (1998 WK11)
Classification: Main-belt Asteroid          SPK-ID: 2016972
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827721178591667 1.2456e-08  
a 2.539332621994547 1.248e-08 au
q 2.075213420723733 3.6827e-08 au
i 9.769056186106379 1.1886e-06 deg
node 83.51239161424408 5.0425e-06 deg
peri 182.91871266499 7.2308e-06 deg
M 300.3847691519196 8.3003e-06 deg
tp 2459445.255547477270
(2021-Aug-18.75554748)
3.4758e-05 TDB
period 1478.011505421425
4.05
1.0896e-05
2.983e-08
d
yr
n .2435704990654679 1.7956e-09 deg/d
Q 3.003451823265361 1.4761e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1990  
   data-arc span      9585 days (26.24 yr)  
   first obs. used      1994-12-01  
   last obs. used      2021-02-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:49:30  

Additional Information
 Earth MOID = 1.05764 au 
 Jupiter MOID = 2.08586 au 
 T_jup = 3.403 
[ 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 13.82   n/a E2021B10  
rotation period rot_per 76.6286 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.]

16972 Neish           Discovered 1998 Nov. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Catherine D. Neish (b. 1981) is a professor at the University of Western Ontario who studies Titan, the Moon and Venus using orbital radar. Previously known by the moniker Katie Dot, she is an avid scuba diver, a champion for social justice, and mother to Penelope.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-12-03Last Updated: 2017-12-07

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Alternate Designations
 1998 WK11 = 1994 XS2 = 1999 XZ164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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