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

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751206547106756 3.8641e-08  
a 2.232526470081022 7.4218e-09 au
q 1.84156497298152 8.5228e-08 au
i 3.301810591205045 4.2664e-06 deg
node 343.3900056413749 7.5337e-05 deg
peri 323.9293353417538 7.6963e-05 deg
M 148.3345714823176 1.8295e-05 deg
tp 2458498.465881901576
6.093e-05 TDB
period 1218.40971197316
n .2954671129607102 1.4734e-09 deg/d
Q 2.623487967180524 8.7215e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1757  
   data-arc span      13936 days (38.15 yr)  
   first obs. used      1982-09-19  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51736  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:48:28  

Additional Information
 Earth MOID = .828089 au 
 Jupiter MOID = 2.6223 au 
 T_jup = 3.618 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO279645  
diameter diameter 3.068 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.392   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Jul-04 21:20 < 00:01 Hebe 0.0408900091593271 0.0408885401281256 0.0408914796533263 6.79215897126547 6.79215894888174 2421414.388625523 0.494910221011617 437.168409013215 32.7377897614025 -81.3504957490982 184693.942565541 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:48:32 2020-Dec-18 02:48

Alternate Designations
 1982 SC8 = 1992 SH25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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