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7896 Svejk (1995 EC)
Classification: Main-belt Asteroid          SPK-ID: 2007896
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1388779970821916 3.3254e-08  
a 3.135735825455628 1.5906e-08 au
q 2.700251114637478 1.0219e-07 au
i 1.907140870853303 3.4018e-06 deg
node 52.32318194591206 0.00012339 deg
peri 139.9624874158174 0.00012415 deg
M 164.6982504177474 1.4672e-05 deg
tp 2458072.615086670666
(2017-Nov-15.11508667)
8.0766e-05 TDB
period 2028.185290076191
5.55
1.5432e-05
4.225e-08
d
yr
n .1774985755795893 1.3505e-09 deg/d
Q 3.571220536273779 1.8115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2381  
   data-arc span      15935 days (43.63 yr)  
   first obs. used      1976-12-18  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48657  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:54:32  

Additional Information
 Earth MOID = 1.7003 au 
 Jupiter MOID = 1.38352 au 
 T_jup = 3.196 
[ 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 12.6   n/a MPO448992  
diameter diameter 15.305 km 0.272 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.20582 h n/a LCDB (Rev. 2019-August); 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 0.083   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7896 Švejk           Discovered 1995 Mar. 1 by Z. Moravec at Klet.
Named for a literary character created by Jaroslav Hašek, Czech writer and humorist (1883-1923). His "good soldier" Josef Švejk is devoted to the disintegrating Austrian-Hungarian monarchy regime, but by his simplicity (or perhaps his ingenuity) he helps to reveal its flaws.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1995 EC = 1976 YJ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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