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15316 Okagakimachi (1993 HH1)
Classification: Main-belt Asteroid          SPK-ID: 2015316
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639196041644264 3.3202e-08  
a 2.291165421071189 7.0576e-09 au
q 1.915598492173979 7.6766e-08 au
i .762227437861034 3.4672e-06 deg
node 291.9457552980489 0.00031568 deg
peri 295.4028891263765 0.00031601 deg
M 341.3383054648483 1.702e-05 deg
tp 2459266.164655743320
(2021-Feb-20.66465574)
6.002e-05 TDB
period 1266.727200097913
3.47
5.853e-06
1.602e-08
d
yr
n .2841969446714127 1.3131e-09 deg/d
Q 2.6667323499684 8.2145e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2012  
   data-arc span      10582 days (28.97 yr)  
   first obs. used      1992-01-01  
   last obs. used      2020-12-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51183  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:55:14  

Additional Information
 Earth MOID = .904746 au 
 Jupiter MOID = 2.31806 au 
 T_jup = 3.580 
[ 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 14.55   n/a E2021B10  
diameter diameter 3.314 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.284   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15316 Okagakimachi           Discovered 1993 Apr. 20 by K. Endate and K. Watanabe at Kitami.
Okagakimachi is a small town in Fukuoka Prefecture, west Japan, where the Hokuto Sichisei (the Big Dipper) appears to dip into the Sea of Genkai at lower culmination in the early morning during the summer and autumn.
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 2017-03-12Last Updated: 2017-04-19

[ show close-approach data ]
Alternate Designations
 1993 HH1 = 1996 CT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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