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9323 Hirohisasato (1989 CV1)
Classification: Main-belt Asteroid          SPK-ID: 2009323
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1694930496228262 2.8624e-08  
a 2.372783822457336 7.5103e-09 au
q 1.970613456293335 6.9228e-08 au
i 5.498023535591709 3.1947e-06 deg
node 99.51004026709589 4.1502e-05 deg
peri 359.8198599957413 4.3886e-05 deg
M 288.8191491827328 1.6119e-05 deg
tp 2459464.465008377815
(2021-Sep-06.96500838)
6.0469e-05 TDB
period 1335.013587572365
3.66
6.3383e-06
1.735e-08
d
yr
n .2696601767586773 1.2803e-09 deg/d
Q 2.774954188621336 8.7832e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1657  
   data-arc span      24294 days (66.51 yr)  
   first obs. used      1954-08-04  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:18:23  

Additional Information
 Earth MOID = .987294 au 
 Jupiter MOID = 2.3804 au 
 T_jup = 3.518 
[ 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 14.69   n/a E2021B10  
diameter diameter 6.775 km 1.704 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 269.156 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.048   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

9323 Hirohisasato           Discovered 1989 Feb. 11 by T. Seki at Geisei.
Hirohisa Sato (b. 1951) studies the orbits and brightness of comets for the Comet Section of the Oriental Astronomical Association. He also has interests in archeology and history. The name was suggested by S. Harada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1989 CV1 = 1991 TR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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