Contents. planet: 5 -Jupiter satellites: J2-Europe: 71, J3-Ganymede: 133, J4-Callisto: 216 total number: 420 type: relative dates: 1891-1891 observatory: 051 - Cape Reference. Gill David, Finlay W.H. (1915) Determination of the mass of Jupiter and elements of the orbis of its satellites from observations made with the Cape heliometer. Annals of the Cape observatory. Vol. XII, part I. Edinburg: Printed under the authority of his magesty's stationery office by NEILL & Co., Limited, Bellevue. 1915QB4_C22v12p1___ Informations. relative to: J1-Io: 201, J2-Europe: 134, J3-Ganymede: 85 reference frame: astrometric centre of frame: topocentre epoch of equinox: date time scale: GMT (UT1=GMT+12h) reduction: no information coordinates: apparent distance, position angle diff. refraction: removed receptor: heliometer telescope: Refractor, F = 2.5 m, D = 17.8 cm observers: Gill David, Finlay W.H. data included in standard data file: no Comments. no information Format. 1. Number of reference satellite (N ref) 2. Number of satellite (N sat) 3. Year of the observation 4. Month of the observation 5. Day of the observation 6. Hour of Cape sideral time of observation 7. Minute of Cape sideral time of observation 8. Seconde of Cape sideral time of observation 9. Hour of Grinwich Mean Time of observation (UT1=GMT+12h) 10. Minute of Grinwich Mean Time of observation with decimals 11. Type of coordinate (10 - apparent distance, 1 - position angle) 12. Apparent distance, arcsec (0.000 if type is 1) 13. Degrees of position angle (0 if type is 10) 14. Minutes of arc of position angle (0 if type is 10) 15. Arcseconds of position angle (0 if type is 10) ------------------------------------------------------- N Year Cape sideral Grinwich Dist., Position ref N month time mean arcsec angle sat day h m s time Type deg. ' '' -------------------------------------------------------