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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1386856659536399 1.6085e-08  
a 3.136534641030706 1.4345e-08 au
q 2.701542245552702 5.3121e-08 au
i 1.906984522764517 4.9382e-07 deg
node 52.32509234413502 2.4844e-05 deg
peri 139.8245468078792 2.6073e-05 deg
M 235.1440684480619 1.0837e-05 deg
tp 2460100.188150574078
(2023-Jun-04.68815057)
6.3224e-05 TDB
period 2028.960347000316
5.55
1.3919e-05
3.811e-08
d
yr
n .1774307716423519 1.2172e-09 deg/d
Q 3.571527036508711 1.6334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2805  
   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      .46761  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:37:20  

Additional Information
 Earth MOID = 1.70239 au 
 Jupiter MOID = 1.38119 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1902-Jul-07 11:20 00:03 Jupiter 1.77067610425864 1.77067439131838 1.7706778171981 2.3685328299297 2.15713366108678 2415937.972515153 2.67808481744519 75.4333985680342 2.66192659002996 -67.6655744101163 6283082.93378707 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
1976-Jun-25 20:22 00:01 Jupiter 1.55188715428927 1.55188659688957 1.55188771168843 1.65299739067865 1.28093604396093 2442955.348350177 1.01997838076991 57.3572872158144 5.71998817536125 28.6445020505399 7259103.10171047 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
1986-Nov-14 03:41 < 00:01 Jupiter 1.45091550577326 1.45091527171511 1.45091573983528 1.31757355990284 0.753943205997668 2446748.653577338 0.695166384774929 251.168088123574 51.8500538507529 44.2120562373668 9600981.68717089 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
1997-Mar-30 11:20 < 00:01 Jupiter 1.87194369149141 1.8719434031839 1.87194397979892 2.78306878306875 2.61543611091123 2450537.972071715 0.4087001147755 10.9139272392386 4.52472451501954 -47.8143900522565 6149192.07248154 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
2060-Oct-27 23:17 < 00:01 Jupiter 1.93721544071796 1.9372148193493 1.93721606208652 3.10676925567467 2.96269150547904 2473760.469908534 0.993226683814461 22.7340397188694 8.22477189287626 -15.5110879372174 2783289.73347812 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
2071-Mar-16 08:32 00:01 Jupiter 1.48265557711788 1.48265508950251 1.48265606473317 1.42027603331046 0.935205393480508 2477551.855344175 1.31074463925358 174.882578105761 15.6492637657194 23.9747616094386 8206824.70857143 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
2081-Aug-07 13:41 00:02 Jupiter 1.49436158173597 1.49436090792699 1.49436225555506 1.4597480162904 0.998618891200119 2481349.069910743 1.62393009864007 298.824524839549 29.9654059747066 60.4180285876536 9365689.44525396 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
2091-Dec-25 21:24 00:02 Jupiter 1.95867735561555 1.9586761181059 1.95867859312498 3.18148188922614 3.04252110613018 2485141.391740870 1.83647257213913 51.3576649295339 5.29133959155079 -25.7583347367138 4787915.61432142 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
2155-Jul-29 16:05 00:03 Jupiter 1.85312866292563 1.85312655705294 1.85313076879663 2.7249319940855 2.5516857857972 2508367.169978941 3.27731862074033 62.3426068362621 8.39416002542387 -13.0001585714375 1132913.10556326 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
2165-Dec-11 08:17 00:04 Jupiter 1.44278701204902 1.44278614003706 1.44278788406369 1.29160629865581 0.70292186706128 2512154.845252142 3.59380470917916 675.734044562052 31.2635703411219 19.9924635103118 8091521.96814223 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38
2176-May-02 09:07 00:04 Jupiter 1.56466813573751 1.56466612706831 1.56467014443027 1.69606424447566 1.33938323504887 2515949.879692344 3.98097081404148 422.90055727325 13.2938068038149 70.1982213556204 9103481.64938932 T 42 CATAB v2.0g-lin.ifort 2021-Jul-08 15:38:42 2021-Jul-08 15:38

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