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14164 Hennigar (1998 TH29)
Classification: Main-belt Asteroid          SPK-ID: 2014164
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0561025902627422 3.4975e-08  
a 2.937653831814008 1.5573e-08 au
q 2.772843842553972 1.0525e-07 au
i 1.509881489819366 4.4158e-06 deg
node 354.7031414902507 0.0001566 deg
peri 94.78886045621546 0.00016246 deg
M 336.8498247610083 4.2383e-05 deg
tp 2458718.763611122408
(2019-Aug-23.26361112)
0.00021666 TDB
period 1839.074631813502
5.04
1.4624e-05
4.004e-08
d
yr
n .1957506203242039 1.5566e-09 deg/d
Q 3.102463821074044 1.6447e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1547  
   data-arc span      10850 days (29.71 yr)  
   first obs. used      1990-02-24  
   last obs. used      2019-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50298  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 23:04:28  

Additional Information
 Earth MOID = 1.78986 au 
 Jupiter MOID = 2.00523 au 
 T_jup = 3.271 
[ 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 14.1   n/a MPO337378  
diameter diameter 3.975 km 0.666 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.859 h n/a LCDB (Rev. 2019-January); 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:
[Polishook, D.; Ofek, E.O.; Waszczak, A.; Kulkarni, S.R.; et al. (2012). Mon. Not. Royal Ast. Soc. 421, 2094-2108.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.338   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14164 Hennigar           Discovered 1998 Oct. 15 by Spacewatch at Kitt Peak.
Donald M. Hennigar (1887-1951) was an amateur telescope maker and active member of the Royal Astronomical Society of Canada, London Centre. He served as vice president of the London Centre during 1936-1938. He was staff architect with the London Life Insurance Company.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26

[ show close-approach data ]
Alternate Designations
 1998 TH29 = 1990 DF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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