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5617 Emelyanenko (1989 EL)
Classification: Main-belt Asteroid          SPK-ID: 2005617
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142645770636035 1.6263e-08  
a 2.427148061907887 8.188e-09 au
q 2.080925656169278 3.7576e-08 au
i 5.42295156435762 7.6377e-07 deg
node 243.2206666505544 9.9227e-06 deg
peri 255.4394406443484 1.4066e-05 deg
M 175.269535344494 8.1166e-06 deg
tp 2458528.070486645327
(2019-Feb-13.57048665)
3.1052e-05 TDB
period 1381.156310661075
3.78
6.989e-06
1.913e-08
d
yr
n .2606511639712162 1.319e-09 deg/d
Q 2.773370467646496 9.3559e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2083  
   data-arc span      23890 days (65.41 yr)  
   first obs. used      1955-04-18  
   last obs. used      2020-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48061  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:56:01  

Additional Information
 Earth MOID = 1.10217 au 
 Jupiter MOID = 2.28529 au 
 T_jup = 3.490 
[ 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 13.76   n/a E2021B10  
diameter diameter 4.748 km 1.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 193.449 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.252   0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

5617 Emelyanenko           Discovered 1989 Mar. 5 by E. F. Helin at Palomar.
Vyacheslav Emelyanenko (b. 1952), head of the department of theoretical mechanics at South Ural University, has made a lifetime study of celestial mechanics, with major contributions to understanding the dynamical evolution of comets, minor planets and meteoroid streams. The name was suggested by M. Bailey.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1989 EL = 1987 UG2 = 1990 OR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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