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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 ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04235055348090683 4.2213e-08  
a 2.309348263015011 1.2771e-08 AU
q 2.211546085896154 9.8632e-08 AU
i 4.018980299130098 6.7962e-06 deg
node 181.4634814555232 6.7601e-05 deg
peri 100.5059596876617 0.00011752 deg
M 208.6480988794344 9.4242e-05 deg
tp 2457539.412124513927
(2016-May-30.91212451)
0.00033645 JED
period 1281.836325732496
3.51
1.0633e-05
2.911e-08
d
yr
n .2808470884879009 2.3296e-09 deg/d
Q 2.407150440133867 1.3311e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1092  
   data-arc span      11133 days (30.48 yr)  
   first obs. used      1984-05-07  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52531  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:19:17  

Additional Information
 Earth MOID = 1.20087 AU 
 T_jup = 3.581 
[ 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 14.1 mag n/a MPO267759  

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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