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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04235055301967855 4.2308e-08  
a 2.30934826294048 1.2784e-08 AU
q 2.211546086889916 9.8814e-08 AU
i 4.018981307007692 6.8343e-06 deg
node 181.4634874717329 6.7725e-05 deg
peri 100.5059566260408 0.0001181 deg
M 208.6480960787809 9.4809e-05 deg
tp 2457539.412134460003
(2016-May-30.91213446)
0.00033844 JED
period 1281.836325670442
3.51
1.0644e-05
2.914e-08
d
yr
n .2808470885014968 2.3321e-09 deg/d
Q 2.407150438991043 1.3326e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      10870 days (29.76 yr)  
   first obs. used      1984-05-07  
   last obs. used      2014-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52012  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:35:39  

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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