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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04235053611307185 3.7416e-08  
a 2.30934825917769 1.2173e-08 AU
q 2.211546122329726 8.9485e-08 AU
i 4.018982967582722 5.7784e-06 deg
node 181.463486292191 5.7464e-05 deg
peri 100.506009552663 9.7523e-05 deg
M 208.6480480703051 7.9641e-05 deg
tp 2457539.412304084559
(2016-May-30.91230408)
0.00028546 JED
period 1281.836322537557
3.51
1.0135e-05
2.775e-08
d
yr
n .2808470891879038 2.2205e-09 deg/d
Q 2.407150396025654 1.2688e-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 = 1.20087 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 14.2 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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