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5711 Eneev (1978 SO4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2005711
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1629957098424205 5.6489e-08  
a 3.939247621669871 5.9968e-08 AU
q 3.297167159330723 2.3094e-07 AU
i 6.371488705693098 7.9018e-06 deg
node 14.21952876670507 5.027e-05 deg
peri 295.7103411410804 5.7074e-05 deg
M 275.8119486160331 3.2454e-05 deg
tp 2457668.330586519596
(2016-Oct-06.83058652)
0.00026716 JED
period 2855.737924738817
7.82
6.521e-05
1.785e-07
d
yr
n .1260619880001507 2.8786e-09 deg/d
Q 4.581328084009018 6.9743e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1159  
   data-arc span      13334 days (36.51 yr)  
   first obs. used      1978-09-26  
   last obs. used      2015-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54519  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:22:42  

Additional Information
 Earth MOID = 2.29106 AU 
 T_jup = 3.027 
[ 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 11.0 mag n/a MPO299003  
diameter diameter 38.81 km 3.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 30. h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Dahlgren, M.; Lahulla, J.F.; Lagerkvist, C.-I.; Lagerros, J.; et al. (1998) Icarus 133, 247-285.]
geometric albedo albedo 0.0426   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

5711 Eneev           Discovered 1978 Sept. 27 by L. I. Chernykh at the Crimean Astrophysical Observatory.
Timur Magometovich Eneev (b. 1924), applied mathematician and celestial mechanician at the Keldysh Institute of Applied Mathematics, made valuable contributions to Soviet cosmonautics and is also known for his works in the areas of cosmogony and ecology.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010902/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1978 SO4 = 1981 AS3 = 1986 TS12 = 1991 GR3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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