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90953 Hideosaitou (1997 VA9)
Classification: Main-belt Asteroid          SPK-ID: 2090953
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1869536674027714 3.138e-08  
a 2.358033601584666 7.3182e-09 au
q 1.917190571909447 7.4294e-08 au
i 4.092365498537844 4.1744e-06 deg
node 203.2062443152629 5.2286e-05 deg
peri 263.8021385589508 5.3608e-05 deg
M 148.0225424232461 1.1674e-05 deg
tp 2458852.688021420930
(2020-Jan-04.18802142)
4.2049e-05 TDB
period 1322.584446149334
3.62
6.157e-06
1.686e-08
d
yr
n .2721943396870646 1.2671e-09 deg/d
Q 2.798876631259885 8.6864e-09 au
  Orbit Determination Parameters
   # obs. used (total)      970  
   data-arc span      10186 days (27.89 yr)  
   first obs. used      1993-09-14  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53975  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:20  

Additional Information
 Earth MOID = .939354 au 
 Jupiter MOID = 2.34888 au 
 T_jup = 3.526 
[ 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 15.67   n/a E2021B10  
diameter diameter 4.479 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90953 Hideosaitou           Discovered 1997 Nov. 7 by T. Okuni at Nanyo.
Hideo Saitou (b. 1946) is the leader of activities of the Fukushima branch of the Japanese Young Astronauts Club, formed by the Japan Aerospace Exploration Agency.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-01-05Last Updated: 2015-01-07

Alternate Designations
 1997 VA9 = 1993 RS8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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