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4493 Naitomitsu (1988 TG1)
Classification: Main-belt Asteroid          SPK-ID: 2004493
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0708858584778187 5.9182e-08  
a 3.024140411971453 2.935e-08 AU
q 2.809771622711392 1.8336e-07 AU
i 9.006500850638234 6.395e-06 deg
node 264.6545988516052 4.4198e-05 deg
peri 157.7319214702615 6.4816e-05 deg
M 318.8684641093391 4.8621e-05 deg
tp 2457219.969301037547
(2015-Jul-16.46930104)
0.00026019 JED
period 1920.884952692857
5.26
2.7964e-05
7.656e-08
d
yr
n .187413618652862 2.7284e-09 deg/d
Q 3.238509201231513 3.1431e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1077  
   data-arc span      26616 days (72.87 yr)  
   first obs. used      1941-11-16  
   last obs. used      2014-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50357  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:01:15  

Additional Information
 Earth MOID = 1.8253 AU 
 T_jup = 3.223 
[ 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 11.2 mag n/a MPO265981  
diameter diameter 20.74 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 5.04 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1636   0.019 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6

4493 Naitomitsu           Discovered 1988 Oct. 14 by T. Kojima at Chiyoda.
Mitsu Naito (b. 1925) is the mother of the first female Japanese astronaut, Chiaki Mukai. As "Mother of Astronauts", she is deeply loved by all the Japanese astronauts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

Alternate Designations
 1988 TG1 = 1941 WP = 1962 VH = 1962 WF1 = 1985 DH1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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