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12979 Evgalvasil'ev (1978 SB8)
Classification: Main-belt Asteroid          SPK-ID: 2012979
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777359940820634 4.3946e-08  
a 2.268553131041724 5.5887e-09 au
q 1.865349585168046 9.9719e-08 au
i 5.349844618279831 4.3999e-06 deg
node 14.61837594918045 3.2103e-05 deg
peri 354.5931524195063 3.3304e-05 deg
M 131.0897716716989 8.0953e-06 deg
tp 2458746.047846324283
(2019-Sep-19.54784632)
2.7903e-05 TDB
period 1248.020903819903
3.42
4.6119e-06
1.263e-08
d
yr
n .2884567068533255 1.0659e-09 deg/d
Q 2.671756676915401 6.5821e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      16031 days (43.89 yr)  
   first obs. used      1977-04-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:40:20  

Additional Information
 Earth MOID = .863332 au 
 Jupiter MOID = 2.7913 au 
 T_jup = 3.588 
[ 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 14.83   n/a E2021B10  
diameter diameter 2.866 km 0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.78331 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.410   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12979 Evgalvasil'ev           Discovered 1978 Sept. 26 by L. V. Zhuravleva at the Crimean Astrophysical Observatory.
Evgenij Aleksandrovich Vasil'ev (1935-2003) was a talented educator, the creator and permanent head of the pioneer camp "Lesnoj" in a complex of "Artek" pioneer camps in the Crimea.
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

Alternate Designations
 1978 SB8 = 1977 HP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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