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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04235054002176274 3.8295e-08  
a 2.30934825991223 1.2275e-08 AU
q 2.211546114006629 9.1147e-08 AU
i 4.018982415582655 5.9226e-06 deg
node 181.4634897247569 6.0474e-05 deg
peri 100.5059935369681 0.00010135 deg
M 208.6480598550609 8.1797e-05 deg
tp 2457539.412262380212
(2016-May-30.91226238)
0.00029296 JED
period 1281.836323149133
3.51
1.022e-05
2.798e-08
d
yr
n .2808470890539091 2.2391e-09 deg/d
Q 2.407150405817831 1.2795e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1212  
   data-arc span      11252 days (30.81 yr)  
   first obs. used      1984-05-07  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51367  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:34:06  

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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