=========================== ============================ IMCCE - Observatoire de Paris /pub/ephem/satel/phenjupiter 2021, September =========================== ============================ SATEL/PHENJUPITER: These files give the predictions (in Terrestrial Time) of the phenomena (eclipses, occultations, transits and shadows) of the Galilean satellites of Jupiter and associated data: dates of the geocentric and heliocentric conjunctions, tangential coordinates on mid-month of the eclipsed satellites. AUTHORS : V. Lainey, M. Gastineau, J. Nepper (year 2023-) W. Thuillot (year 1996-2022) ADDRESS : IMCCE - Observatoire de Paris 77 av. Denfert Rochereau, F-75014 PARIS Phone: (1) 40 51 22 62 Fax: (1) 46 33 28 34 e-mail: Valery.Lainey@obspm.fr CONTENTS: phenE.xxxx: English version of compact predictions (about 60 ko each) Phenomena of the Galilean satellites for the year xxxx. Predictions of the disappearance and the reappearance during an eclipse (ECD or ECR) or an occultation (OCD or OCR) of a Galilean satellite, or the ingress and egress during its transit in front Jupiter (TRI or TRE) or the transit of its shadow (SHI or SHE). The Galilean satellites are labeled as following: I,II,III,IV for Io, Europa, Ganymede and Callisto. For each month, the phenomena are chronologicaly ordered in four columns. The dates t of the mid event (the satellite or its umbra is bissected) are given in the TT time scale (Terrestrial Time, nearly TAI + 32.184 s). TU dates tUT can be deduced from t thanks to the formula tUT = t - (TT - TU) when the value TT-TU is known. This is the case for the last years and these values are given in the following table. For the next year we can use the more recent value. ----------------------------- Interval TT-TU(s) ----------------------------- 1/ 7/1994-31/12/1995 61 1/ 1/1996-30/ 6/1997 62 1/ 7/1997-31/12/1998 63 1/ 1/1999-31/12/2005 64 1/ 1/2006-31/12/2008 65 1/ 1/2009-30/ 6/2012 66 1/ 7/2012-30/ 6/2015 67 1/ 7/2015-31/12/2016 68 1/ 1/2017- 69 ----------------------------- The format of the records is given in the following example, where yy, mm, hh, mm.m, s and phen designed the year, month, hour, minute, number of the satellite and type of the phenomenon. yymm dd hhmm.m s phen dd hhmm.m s phen dd hhmm.m s phen dd hhmm.m s phen 96 1 0 123 II OC R 8 1426 I SH I 16 1 9 II SH E 24 1455 I SH E 96 1 0 736 III SH I 8 1447 I TR I 16 2 8 II TR E 24 1531 I TR E 96 1 0 826 III TR I 8 1639 I SH E 16 1338.5 I EC D 24 1915.9 II EC D phenF.xxxx: French version of compact predictions (about 60 ko each) same predictions but using the French nomenclature of the phenomena defined as following: ECD and ECR become E. c. and E. f. (eclipse commencement et fin) OCD and OCR become Im. and Em. (Immersion et emersion) SHI and SHE become O. c. and O. f. (ombre commencement et fin) TRI and TRE become P. c. and P. f. (passage commencement et fin) phencE.xxxx and phencF.xxxx: (about 106 ko each) these files give the predictions of the phenomena in a sequential form (chronologicaly ordered). xyE.xxxx: these files allow you to know the positions of the eclipsed Galilean satellites during the year xxxx. They give the differential coordinates X and Y of the Galilean satellites (X towards the East and Y towards the North) during an eclipse at a date near the middle of each month. xyF.xxxx: same as xy.Exxxx with French designations of the phenomena. JovianEventsUTxxxx.txt : for the year xxxx, predictions of the phenomena in UT, rounded to the minute, conjunctions, tangential coordinates XY and dates of invisibility of Jupiter NOTE: These predictions have been made using the G-5 Ephemerides (Arlot, 1982) based on the Sampson-Lieske (Lieske, 1977) theory of the motions of the Galilean satellites until the predictions for 2014. The predictions for the years 2015-2022 are made using the Lainey's theory (Lainey et al. 2004, 2007). The predictions for the following years are made using the Lainey's theory (Lainey, 2021). Each event is computed for the center of the satellites: for the eclipses these dates are approximately the half brightness (or mid event), for the other phenomena they correspond to the bissection of the satellites. REFERENCES: Arlot, J.-E.: 1982, Astron. Astrophys. 107, 305 Lainey, V., Duriez, L. and Vienne, A. "Synthetic representation of the Galilean satellites' orbital motions from L1ephemerides", Astron. Astrophys., vol 456 pp.783-788 (2007). Lainey, V., Arlot, J.E. and Vienne, A. "New accurate ephemerides for the Galilean satellites of Jupiter. II. Fitting theobservations", Astron. Astrophys., vol 427 pp.371-376 (2004). Lainey, V., Duriez, L. and Vienne, A. "New accurate ephemerides for the Galilean satellites of Jupiter. I. Numerical integrationof elaborated equations of motion", Astron. Astrophys., vol 420 pp.1171-1183 (2004). Lieske, J.H.: 1977, Astron. Astrophys., 56, 333 Sampson, R.A.: 1921, Mem. Roy. Astron. Soc. 63 Thuillot, W.: 1989, Predictions des phenomenes des satellites galileens. Note Scientifique et Technique du Bureau des longitudes S015, Bureau des longitudes, Paris. Thuillot, W.: 1983, Theory of the phenomena of Jupiter's Galilean satellites - A Cheyshev-polynomial representation Astron. Astrophys. vol. 127, no. 1, Oct. 1983, p. 63-67. In French. Lainey, 2021 : https://ftp.imcce.fr/pub/ephem/satel/NOE/JUPITER/2021/ ================================================================================ ERRATA - 2010/08/23: Correction of the file xyE.2012 An error has been found for the end of the Jupiter's visibilty in the file xyE.2012 Instead of Invisibilite de Jupiter : a 2012/10/06 02h 11m 56s We must read Invisibilite de Jupiter : a 2012/06/10 02h 11m 56s -2019/11/12: for the year 2022, 2 grazing events of satellite 4 have been added to the previous versions : 22 5 27 2224 IV TR I 22 5 27 2255 IV TR E ================================================================================ BEWARE: THE USE OF THESE DATA IS SUBJECTED TO CONDITIONS. MORE INFORMATIONS ARE AVAILABLE ON THE WEB PAGE BELOW: https://www.imcce.fr/mentions-legales User feed-back is encouraged. Unless otherwise specified, send comments and bug reports to: E-mail : comments@imcce.fr Fax : (33) 1 46 33 28 34 Postal mail: IMCCE - Observatoire de Paris 77 avenue Denfert Rochereau F-75014 PARIS ================================================================================