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8251 Isogai (1980 VA)
Classification: Mars-crossing Asteroid          SPK-ID: 2008251
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2637950035685258 6.4528e-08  
a 2.253493862213205 1.0009e-08 AU
q 1.659033440789022 1.4531e-07 AU
i 3.208902653220382 7.5301e-06 deg
node 169.2596027230068 0.00010261 deg
peri 233.2002557991717 0.00010343 deg
M 28.02695376887769 1.2992e-05 deg
tp 2456904.304137581159
(2014-Sep-03.80413758)
4.429e-05 JED
period 1235.614500111605
3.38
8.2319e-06
2.254e-08
d
yr
n .2913530069188113 1.9411e-09 deg/d
Q 2.847954283637389 1.2649e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      786  
   data-arc span      12514 days (34.26 yr)  
   first obs. used      1980-10-13  
   last obs. used      2015-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57676  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:22:29  

Additional Information
 Earth MOID = .669649 AU 
 T_jup = 3.577 
[ 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 15.2 mag n/a MPO309216  

8251 Isogai           Discovered 1980 Nov. 8 by T. Furuta at Tokai.
Rensuke Isogai (b. 1941), a high-school classmate of the discoverer, is an electrical engineer and amateur astronomer. He influenced the discoverer in astronomy, who began to observe stars with a telescope borrowed from him.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1980 VA = 1980 VL = 1990 RX 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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