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15526 Kokura (1999 XH229)
Classification: Main-belt Asteroid          SPK-ID: 2015526
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1653580919894851 3.8296e-08  
a 2.979128560578756 1.6089e-08 au
q 2.486505546010072 1.1659e-07 au
i 16.18469721206208 4.7496e-06 deg
node 179.9776087823989 1.266e-05 deg
peri 314.151332318686 1.7954e-05 deg
M 307.0631334144561 1.2892e-05 deg
tp 2459276.677328847195
6.8207e-05 TDB
period 1878.15873507219
n .1916770895225546 1.5528e-09 deg/d
Q 3.471751575147441 1.875e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1554  
   data-arc span      25426 days (69.61 yr)  
   first obs. used      1950-06-18  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53144  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:20:30  

Additional Information
 Earth MOID = 1.52588 au 
 Jupiter MOID = 1.64719 au 
 T_jup = 3.180 
[ 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 13.5   n/a MPO452390  
diameter diameter 6.017 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.234   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

15526 Kokura           Discovered 1999 Dec. 8 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Kokura high school is in Kitakyushu City, Fukuoka Prefecture, Japan. Some students are involved in the observation of minor planets, and the school was selected as one of the Super Science High Schools by the Japanese government.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

[ show close-approach data ]
Alternate Designations
 1999 XH229 = 1993 RX16 = 1998 QH48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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