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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03242072649796655 5.203e-08  
a 2.306266030802035 1.4809e-08 AU
q 2.231495210585851 1.2007e-07 AU
i 3.190723711648804 5.3113e-06 deg
node 146.0450401822747 0.00010749 deg
peri 156.7772186105805 0.00014855 deg
M 156.2716488760476 0.00010235 deg
tp 2456245.183952219893
(2012-Nov-13.68395222)
0.00036331 JED
period 1279.270927507825
3.50
1.2321e-05
3.373e-08
d
yr
n .2814102878905594 2.7104e-09 deg/d
Q 2.381036851018218 1.5289e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1112  
   data-arc span      10359 days (28.36 yr)  
   first obs. used      1985-11-11  
   last obs. used      2014-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49087  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:55:59  

Additional Information
 Earth MOID = 1.21573 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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