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13235 Isiguroyuki (1998 HT42)
Classification: Main-belt Asteroid          SPK-ID: 2013235
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0423780097259454 3.7326e-08  
a 2.308455506499469 1.2063e-08 au
q 2.210627756593122 8.9179e-08 au
i 4.021426733004692 5.781e-06 deg
node 181.4457639093304 5.7416e-05 deg
peri 101.4074127879912 9.7612e-05 deg
M 16.33030261825162 8.0365e-05 deg
tp 2457542.387117018386
(2016-Jun-02.88711702)
0.00028579 JED
period 1281.093091930759
3.51
1.0042e-05
2.749e-08
d
yr
n .2810100236021392 2.2027e-09 deg/d
Q 2.406283256405815 1.2575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1289  
   data-arc span      11359 days (31.10 yr)  
   first obs. used      1984-05-07  
   last obs. used      2015-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51694  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:11:34  

Additional Information
 Earth MOID = 1.19835 au 
 Jupiter MOID = 2.62882 au 
 T_jup = 3.582 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO324431  

13235 Isiguroyuki           Discovered 1998 Apr. 30 by T. Okuni at Nanyo.
Amateur astronomer Nobuyuki Ishiguro (b. 1959) has been active in the Nanyo Astronomical Amateurs Club since 1984.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080618/MPCPages.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1998 HT42 = 1984 JJ = 1985 SA6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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