Contents.
planet: 5 - Jupiter
satellites: J1 - Io : 10,
J2 - Europa : 1,
J3 - Ganymede : 8,
J4 - Callisto : 8
total number: 27
type: relative
dates: 2014-2015
observatory: 220 - Vainu Bappu Observatory, Kavalur
Reference.
Vasundhara R., Selvakumar G., Anbazhagan P. (2017)
Analysis of mutual events of Galilean satellites observed from VBO during 2014–2015.
Monthly Notices of the Royal Astronomical Society. V. 468. 2017. P. 501-508.
2017MNRAS_468__501V
Informations.
relative to: reference body is an occulting or eclipsing satellite:
J1 - Io : 5,
J2 - Europa : 18,
J3 - Ganymede : 2,
J4 - Callisto : 2
reference frame: astrometric
centre of frame: topocenter for mutual occultations or heliocenter for mutual eclipses
epoch of equinox: J2000
time scale: UTC
reduction: from mutual occultations and eclipses
coordinates: X, Y (topocentric for mutual occultations or heliocentric for mutual eclipses)
diff. refraction: no information
receptor: CCD, the field 4x4 arcmin2 with the resolution 0.26 arcsec per pixel
telescope: 1.3-m F/8 Double Horseshoe telescope
observers: no information
data included in standard data file: no
Comments.
1. The same observations, having been independently processed by another method, are also included in
the portions jg0047 and jg0048 (see the lines where the observatory code is VBO).
2. Standard R filter was used for all the events.
3. For observations of J4 (Callisto) both DLC and DLCm intensity distribution models (see Vasundhara
et al. (2017), pp. 503–504) were used. Hence, eight lines of data giving relative coordinates of J4
correspond to only four unique observations of this satellite.
Format.
1. The type of the phenomenon (eclipse or occultation) including the satellite numbers. The type of
phenomenon is coded as n_a o n_p or n_a e n_p for a mutual occultation or eclipse, respectively.
Here $n_a$ is the number of the occulting or eclipsing satellite and $n_p$ is the number of the
occulted or eclipsed satellite.
2. The intensity distribution model that was used in the fit (DLC, DLCm, MLC).
See explanations in Vasundhara et al. (2017), pp. 502–504.
3. Year of observation
4. Month of observation
5. Day of observation
6. Hour of the astrometric data (UTC)
7. Minute of the astrometric data (UTC)
8. Seconds of the astrometric data with decimals (UTC)
9. sigma of the observation date (in seconds)
10. X coordinate in arcseconds (topocentric for mutual occultations or heliocentric for mutual eclipses)
11. Y coordinate in arcseconds (topocentric for mutual occultations or heliocentric for mutual eclipses)
12. "O-C" for X in arcseconds
13. "O-C" for Y in arcseconds
14. sigma of "O-C" for X in arcseconds
15. sigma of "O-C" for Y in arcseconds
16. Central meridian longitude (CML) of the occulted/eclipsed satellite (in degrees)
17. Solar phase angle (in degrees)
18. Impact parameter in arcseconds
19. Impact parameter in kilometers
20. sigma of impact parameter in arcseconds
21. sigma of impact parameter in kilometers
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Type Year sigma sigma sigma Solar sigma sigma
Model month date X Y (O-C)X (O-C)Y (O-C)X (O-C)Y CML phase IP IP IP IP
day h m s sec arcsec arcsec arcsec arcsec arcsec arcsec deg deg arcsec km arcsec km
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