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6964 Kunihiko (1990 TL1)
Classification: Main-belt Asteroid          SPK-ID: 2006964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751389676041906 3.3999e-08  
a 2.364844182441569 6.5128e-09 au
q 1.950667813783976 8.1407e-08 au
i 5.424768140383885 3.7577e-06 deg
node 192.5029115934237 3.3553e-05 deg
peri 181.0534036008821 3.5135e-05 deg
M 64.85368286634511 8.9175e-06 deg
tp 2458761.204591448266
(2019-Oct-04.70459145)
3.3075e-05 TDB
period 1328.318505151979
3.64
5.4873e-06
1.502e-08
d
yr
n .2710193365549858 1.1196e-09 deg/d
Q 2.779020551099161 7.6535e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2023  
   data-arc span      25348 days (69.40 yr)  
   first obs. used      1950-08-14  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47471  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 20:40:06  

Additional Information
 Earth MOID = .951238 au 
 Jupiter MOID = 2.68491 au 
 T_jup = 3.522 
[ 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 13.7   n/a MPO431579  
diameter diameter 4.739 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.286   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6964 Kunihiko           Discovered 1990 Oct. 15 by K. Endate and K. Watanabe at Kitami.
Named in memory of Kunihiko Kodaira (1915-1997), Japanese mathematician who was awarded the Fields Medal in 1954. He contributed to the harmonic integral theory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980808/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Alternate Designations
 1990 TL1 = 1976 UT = 1979 SU7 = 1979 TM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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