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9105 Matsumura (1997 AU)
Classification: Main-belt Asteroid          SPK-ID: 2009105
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08568402912221289 3.7991e-08  
a 2.881274284609336 1.4457e-08 au
q 2.634395094897787 1.1388e-07 au
i 2.161787261826609 3.8221e-06 deg
node 20.23206494178822 0.000104 deg
peri 338.9005000745434 0.00010628 deg
M 33.87589275592183 2.1357e-05 deg
tp 2458832.401599836307
(2019-Dec-14.90159984)
0.00010605 TDB
period 1786.386103384704
4.89
1.3445e-05
3.681e-08
d
yr
n .2015241829959941 1.5167e-09 deg/d
Q 3.128153474320886 1.5695e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1597  
   data-arc span      9751 days (26.70 yr)  
   first obs. used      1993-03-19  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51752  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:49:07  

Additional Information
 Earth MOID = 1.63081 au 
 Jupiter MOID = 2.27705 au 
 T_jup = 3.288 
[ 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 14.0   n/a MPO492857  
rotation period rot_per 4.769 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.]

9105 Matsumura           Discovered 1997 Jan. 2 by T. Kobayashi at Oizumi.
Masafumi Matsumura (b. 1959), associate professor at Kagawa University, studies interstellar matter on the basis of optical polarimetry and on light scattering calculations. He also works for astronomy education.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030806/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1997 AU = 1993 FA43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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