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7594 Shotaro (1993 BH2)
Classification: Main-belt Asteroid          SPK-ID: 2007594
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1846759288043969 4.4597e-08  
a 2.41676352975765 8.1475e-09 au
q 1.970445480199063 1.0804e-07 au
i 3.788963391943005 3.327e-06 deg
node 113.7066014579299 7.8817e-05 deg
peri 125.8103231386871 7.9589e-05 deg
M 9.894174076353632 1.2685e-05 deg
tp 2458962.783905868955
(2020-Apr-23.28390587)
4.8312e-05 TDB
period 1372.301900330026
3.76
6.9396e-06
1.9e-08
d
yr
n .2623329457704774 1.3266e-09 deg/d
Q 2.863081579316237 9.6522e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2095  
   data-arc span      15310 days (41.92 yr)  
   first obs. used      1978-03-05  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48909  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:33:26  

Additional Information
 Earth MOID = .960925 au 
 Jupiter MOID = 2.15173 au 
 T_jup = 3.490 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO467734  
rotation period rot_per 9.643 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

7594 Shotaro           Discovered 1993 Jan. 19 by T. Seki at Geisei.
Named in memory of Shotaro Miyamoto (1912-1992), professor of astrophysics at Kyoto University. His interests included relativistic cosmology, planetary nebulae, solar physics, lunar geology and Martian meteorology. He also contributed greatly to the popularization of astronomy through his many books and radio and television broadcasts. Director of the Kwasan and Hida Observatories, he also served as president of the International Lunar Society, vice president of the International Association of Planetology, president of the Astronomical Society of Japan and vice president of the Oriental Astronomical Association. Name proposed by the discoverer following a suggestion by K. Sakka and T. Sato.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981005/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1993 BH2 = 1978 EW1 = 1990 MW = 1991 UC5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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