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9110 Choukai (1997 AM19)
Classification: Main-belt Asteroid          SPK-ID: 2009110
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03244244665276623 4.427e-08  
a 2.30617015265295 1.2536e-08 AU
q 2.231352350503305 1.0579e-07 AU
i 3.192013883931806 4.8749e-06 deg
node 146.035961383175 8.9638e-05 deg
peri 157.53377179 0.00012882 deg
M 211.7593885995759 9.3415e-05 deg
tp 2457527.244663179168
(2016-May-18.74466318)
0.00033278 JED
period 1279.191153848398
3.50
1.043e-05
2.856e-08
d
yr
n .2814278373618781 2.2947e-09 deg/d
Q 2.380987954802594 1.2943e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1258  
   data-arc span      10811 days (29.60 yr)  
   first obs. used      1985-11-11  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47969  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:01:18  

Additional Information
 Earth MOID = 1.21756 AU 
 T_jup = 3.585 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a PDS3 (MPC 32199)  

9110 Choukai           Discovered 1997 Jan. 13 by T. Okuni at Nanyo.
The Choukai volcanic mountain range forms a part of the border between Akita and Yamagata prefectures in the northern part of mainland Japan. It was designated as a national park in 1963. Mt. Choukai has a height of 2230 meters.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1997 AM19 = 1985 UX4 = 1985 VT4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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