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12219 Grigor'ev (1982 SC8)
Classification: Main-belt Asteroid          SPK-ID: 2012219
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1754385269507376 6.9739e-08  
a 2.231854319287948 1.3499e-08 AU
q 1.84030108514343 1.5504e-07 AU
i 3.303780160066137 7.4127e-06 deg
node 343.4479108246598 8.7626e-05 deg
peri 324.0295021423026 9.025e-05 deg
M 277.1106326715206 2.426e-05 deg
tp 2457280.910011922257
(2015-Sep-15.41001192)
8.2682e-05 JED
period 1217.859510158533
3.33
1.1049e-05
3.025e-08
d
yr
n .2956005984246389 2.6817e-09 deg/d
Q 2.623407553432467 1.5867e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1067  
   data-arc span      11577 days (31.70 yr)  
   first obs. used      1982-09-19  
   last obs. used      2014-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53577  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:16:48  

Additional Information
 Earth MOID = .82785 AU 
 T_jup = 3.619 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO279645  

12219 Grigor'ev           Discovered 1982 Sept. 19 by L. I. Chernykh at the Crimean Astrophysical Observatory.
From 1957 to 1962 Mikhail Grigor'evich Grigor'ev (1917-1981) was chief of the space-vehicle launch site now known as the Plesetsk cosmodrome. Under his leadership and thanks to his strong will this cosmodrome in the Archangel region of Russia became the most active in the world.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070402/MPCPages.arcLast Updated: 2007-07-05

[ show close-approach data ]
Alternate Designations
 1982 SC8 = 1992 SH25 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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