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8400 Tomizo (1994 AQ)
Classification: Main-belt Asteroid          SPK-ID: 2008400
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 .1968681368088738 4.1827e-08  
a 2.596765310030598 1.2277e-08 au
q 2.085544961714956 1.0789e-07 au
i 13.78681205286741 4.2036e-06 deg
node 126.4808597863571 1.7602e-05 deg
peri 254.6530939114689 2.1112e-05 deg
M 178.414806331811 1.5832e-05 deg
tp 2458243.011802917255
(2018-May-04.51180292)
6.3908e-05 TDB
period 1528.436773586134
4.18
1.0839e-05
2.968e-08
d
yr
n .2355347674312629 1.6703e-09 deg/d
Q 3.107985658346239 1.4694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1989  
   data-arc span      10216 days (27.97 yr)  
   first obs. used      1992-06-28  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44558  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:48:51  

Additional Information
 Earth MOID = 1.13497 au 
 Jupiter MOID = 2.49541 au 
 T_jup = 3.349 
[ 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 12.9   n/a MPO502232  
rotation period rot_per 3.04983 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:
[Clark, M. (2015) Minor Planet Bull. 42, 163-166.]

8400 Tomizo           Discovered 1994 Jan. 4 by T. Kobayashi at Oizumi.
Okamoto Tomizo (b. 1933) joined the Tokyo Astronomical Observatory in 1954 to observe the solar corona and flare phenomenon at the Norikura Solar Observatory. After his 1994 retirement, he helped popularize astronomy as a member of the Public Information Office at the National Astronomical Observatory of Japan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

Alternate Designations
 1994 AQ = 1992 PB6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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