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15806 Kohei (1994 GN1)
Classification: Main-belt Asteroid          SPK-ID: 2015806
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1171665969366525 3.8326e-08  
a 3.018050360415465 1.9102e-08 au
q 2.664435670302148 1.1582e-07 au
i 10.32998130739161 3.9751e-06 deg
node 128.9738045931483 2.4163e-05 deg
peri 43.17471613283802 2.9364e-05 deg
M 313.4867763260466 1.7856e-05 deg
tp 2458847.935546070810
(2019-Dec-30.43554607)
9.5626e-05 TDB
period 1915.085421941481
5.24
1.8181e-05
4.978e-08
d
yr
n .1879811709051799 1.7846e-09 deg/d
Q 3.371665050528783 2.134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1851  
   data-arc span      13444 days (36.81 yr)  
   first obs. used      1983-02-15  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49309  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:04:11  

Additional Information
 Earth MOID = 1.68268 au 
 Jupiter MOID = 1.65107 au 
 T_jup = 3.212 
[ 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 12.7   n/a MPO337392  
diameter diameter 9.653 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 145.700 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.157   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15806 Kohei           Discovered 1994 Apr. 15 by K. Endate and K. Watanabe at Kitami.
Kohei Mori (b. 1956) is an amateur astronomer and junior high school teacher. He has been a member of the Astronomical Society of Shikoku since 1983, and promotes the astronomical education in his local community.
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 2015-08-29Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 1994 GN1 = 1983 CT2 = 1999 HT3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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