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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .13887804505616 3.3324e-08  
a 3.135735825875879 1.598e-08 au
q 2.700250964565674 1.0233e-07 au
i 1.907141125736224 3.4303e-06 deg
node 52.32341862209053 0.00012469 deg
peri 139.9622634965944 0.00012545 deg
M 164.6982340140541 1.4778e-05 deg
tp 2458072.615178900049
8.1483e-05 TDB
period 2028.185290483917
n .1774985755439068 1.3568e-09 deg/d
Q 3.571220687186084 1.8199e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2316  
   data-arc span      15657 days (42.87 yr)  
   first obs. used      1976-12-18  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49214  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:05:49  

Additional Information
 Earth MOID = 1.7003 au 
 Jupiter MOID = 1.38351 au 
 T_jup = 3.196 
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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] (  
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] (  

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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