Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640241169753373 3.3784e-08  
a 2.291525959518664 7.1221e-09 au
q 1.915660437482552 7.7983e-08 au
i .7622697613478854 3.4855e-06 deg
node 291.9484825766656 0.00032542 deg
peri 295.3639584786854 0.00032575 deg
M 284.5454540619178 1.7021e-05 deg
tp 2459266.063576165301
(2021-Feb-20.56357617)
6.0424e-05 TDB
period 1267.026210693255
3.47
5.9069e-06
1.617e-08
d
yr
n .2841298758950105 1.3246e-09 deg/d
Q 2.667391481554775 8.2903e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1915  
   data-arc span      10231 days (28.01 yr)  
   first obs. used      1992-01-01  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:46:32  

Additional Information
 Earth MOID = .906047 au 
 Jupiter MOID = 2.31849 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 14.6   n/a MPO492922  
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-18 08:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin