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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2644813171664494 6.2725e-08  
a 2.253387943544891 9.9314e-09 au
q 1.657408932149141 1.4096e-07 au
i 3.211063976696693 7.302e-06 deg
node 169.2511597049439 0.00010123 deg
peri 233.1931494621392 0.00010206 deg
M 144.5118973289941 1.2894e-05 deg
tp 2456904.532203204571
(2014-Sep-04.03220320)
4.2729e-05 JED
period 1235.527386647435
3.38
8.168e-06
2.236e-08
d
yr
n .2913735493770386 1.9263e-09 deg/d
Q 2.84936695494064 1.2558e-08 au
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      12617 days (34.54 yr)  
   first obs. used      1980-10-13  
   last obs. used      2015-04-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54249  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:00:55  

Additional Information
 Earth MOID = .667036 au 
 Jupiter MOID = 2.56787 au 
 T_jup = 3.576 
[ 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 15.3 mag n/a MPO337325  

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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