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12186 Mitukurigen (1977 ER5)
Classification: Main-belt Asteroid          SPK-ID: 2012186
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0576918466169011 6.8154e-08  
a 2.90220248938885 2.3948e-08 AU
q 2.73476906851984 2.0608e-07 AU
i .8092466811776305 5.1152e-06 deg
node 265.9311405554541 0.0004754 deg
peri 141.6699231346178 0.00047899 deg
M 347.5522690014267 5.1502e-05 deg
tp 2457062.942126672968
(2015-Feb-09.44212667)
0.00025835 JED
period 1805.884590922247
4.94
2.2352e-05
6.12e-08
d
yr
n .1993482871550234 2.4674e-09 deg/d
Q 3.06963591025786 2.533e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1137  
   data-arc span      13865 days (37.96 yr)  
   first obs. used      1977-03-12  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49955  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:43:23  

Additional Information
 Earth MOID = 1.74403 AU 
 T_jup = 3.284 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO332934  
rotation period rot_per 11.1967 h n/a LCDB (Rev. 2015-July); 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., in press.]

12186 Mitukurigen           Discovered 1977 Mar. 12 by H. Kosai and K. Hurukawa at the Kiso Station of the Tokyo Astronomical Observatory.
Born in Mimasaka, Mitukuri Genpo (1799-1863) was a physician of Western medicine in the late Edo period. In Edo he was appointed an interpreter in the Tokugawa shogunate's Office of Astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1977 ER5 = 1995 YW 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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