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4493 Naitomitsu (1988 TG1)
Classification: Main-belt Asteroid          SPK-ID: 2004493
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07363292936142159 9.6916e-09  
a 3.023325297438814 1.2932e-08 au
q 2.800708999375903 2.918e-08 au
i 9.029428352901041 2.4018e-07 deg
node 264.4199531461335 4.9803e-06 deg
peri 160.4359254474869 2.1071e-05 deg
M 8.561559378493394 1.833e-05 deg
tp 2459154.835772387737
(2020-Nov-01.33577239)
9.7785e-05 TDB
period 1920.108383726196
5.26
1.232e-05
3.373e-08
d
yr
n .1874894162491899 1.2029e-09 deg/d
Q 3.245941595501725 1.3884e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2839  
   data-arc span      28983 days (79.35 yr)  
   first obs. used      1941-11-16  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41513  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:39:59  

Additional Information
 Earth MOID = 1.81593 au 
 Jupiter MOID = 2.01134 au 
 T_jup = 3.223 
[ 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 11.43   n/a MPCxxxxx  
diameter diameter 16.809 km 0.592 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.04 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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 0.207   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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