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8668 Satomimura (1991 HM)
Classification: Main-belt Asteroid          SPK-ID: 2008668
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09783665288836724 7.5675e-08  
a 2.422691243128213 2.2298e-08 AU
q 2.185663240918592 1.8512e-07 AU
i 11.0860815556494 7.673e-06 deg
node 57.17178916218759 3.5842e-05 deg
peri 195.2074336262027 5.1743e-05 deg
M 61.81033936216579 3.8379e-05 deg
tp 2456764.014695411889
(2014-Apr-16.51469541)
0.00014607 JED
period 1377.353862318883
3.77
1.9015e-05
5.206e-08
d
yr
n .2613707412806116 3.6083e-09 deg/d
Q 2.659719245337835 2.4479e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      11941 days (32.69 yr)  
   first obs. used      1981-10-25  
   last obs. used      2014-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5235  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:19:59  

Additional Information
 Earth MOID = 1.17521 AU 
 T_jup = 3.481 
[ 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 13.9 mag n/a MPO263426  

8668 Satomimura           Discovered 1991 Apr. 16 by S. Otomo and O. Muramatsu at Kiyosato.
Satomi village is famous for the starry sky in Ibaraki prefecture, 150 km north of Tokyo. A large star party is held there each autumn.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080321/MPCPages.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 1991 HM = 1965 NA = 1981 UN26 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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