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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1387891593662666 1.6083e-08  
a 3.135995697007748 1.4379e-08 au
q 2.700753490443813 5.3118e-08 au
i 1.9070766389207 4.9389e-07 deg
node 52.32465271709692 2.4843e-05 deg
peri 139.8977067582086 2.6069e-05 deg
M 200.2785945322423 1.0736e-05 deg
tp 2460100.457988561692
(2023-Jun-04.95798856)
6.3193e-05 TDB
period 2028.4374216054
5.55
1.3951e-05
3.82e-08
d
yr
n .1774765127903622 1.2206e-09 deg/d
Q 3.571237903571682 1.6374e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2804  
   data-arc span      16150 days (44.22 yr)  
   first obs. used      1976-12-18  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46608  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:08:11  

Additional Information
 Earth MOID = 1.70016 au 
 Jupiter MOID = 1.38242 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 12.64   n/a MPCxxxxx  
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. 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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
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

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