Nota: para poder ver el formato tal y como se debe, retirar la opción de ajuste de línea al Bloc de Notas (ver en "Edición", retirara la palomita a "Ajuste de Línea"). Output Format – Normal occultations The following is sample prediction output, illustrating most of the output messages: Occultation Predictions for Kambah in January 2000 E.Long. 149 3 44.5 Lat. -35 23 55.0 Alt. 582m. T.dia 320mm. dMag 0.0 day Time P Star Sp Mag % Elon Sun Moon CA PA VA WA Libration A B RV Cct R.A. Dec y m d h m s No D ill Alt Alt Az o o o o L B m/o m/o "/sec o h m s o m s 00 01 02 17 32 58 R 159514 F0 8.9 14- 43 14 98 80S 278 41 266 +4.2 -6.8 +0.1-1.3 .475 -167 15 49 32.9 -14 32 17 00 01 03 17 14 34 r 160004 F5 8.5 8- 33 3 109 78S 274 40 267 +2.9 -6.1 -0.3-1.1 .521 -167 16 36 58.1 -17 9 27 00 01 03 17 38 11 R X41226 9.5 8- 32 7 106 72N 304 69 297 +2.9 -6.1 -0.3-1.7 .494 +163 16 37 58.4 -17 5 46 00 01 09 0 36 44 D 3079 A1 4.1 5+ 26 66 42 82 68N 53 175 71 -3.9 +0.9 +1.5+0.5 .330 +29 21 5 54.7 -17 14 3 3079 = Tsin = theta Capricorni 00 01 09 1 51 16 R 3079 A1 4.1 5+ 26 76 57 66 -58N 287 56 305 -4.1 +1.0 +2.0-1.8 .297 +151 21 5 54.7 -17 14 3 3079 = Tsin = theta Capricorni 00 01 09 4 39 19 D Uranus 5.9 5+ 27 55 70 334 72N 56 258 75 -4.8 +1.0 +2.0+1.8 .315 +13 21 11 29.3 -16 54 6 Duration of Partial Stage for Disk = 10 secs 00 01 18 11 27 44 D 790wF7 6.8 89+ 142 35 1 68S 104 283 107 -2.2 +3.9 +2.3-0.4 .367 -26 5 17 31.6 20 7 49 790 is Double : Mag 7.5 & 7.6, Sepn 0.001, & 9.9, Sepn 10.200, PA 148 790 = CD Tau, 6.77 to 7.34V, Var Type EA/D, Phase 0.37 00 01 20 11 56 41 D 79410 G5 7.2 99+ 170 29 26 80N 86 243 76 +1.6 +0.8 +1.8-0.5 .427 +5 7 28 25.4 21 32 51 Distance of 79410 to Terminator = 12.5 ; to 3km sunlit peak = 4.4 Graze of 2133 K4 nearby at Lat = -35.99 -0.05(E.Long -149.06), CA = 1.8S 28 23 53 29 Gr 2133 K4 5.5 44- 83 54 38 285 Closest distance to graze path is 65km at azimuth 183 00 01 29 0 4 1 r 2133 K4 5.5 44- 83 56 36 283 17S 214 89 198 +4.5 -6.9 +1.5+9.0 .106 -106 14 56 45.3 -11 24 30 2133 = xi Librae 00 06 18 12 4 26 R 2778oF8 7.3 98- 162 45 86 73S 243 2 251 +0.0 -1.5 +1.8+0.0 .310 -147 19 4 22.1 -21 31 46 2778 is Double : Mag 7.7 & 7.9, Sepn 2.3 From Orbital elements, Sepn = 1.38", PA = 192.75 The meaning of the various columns are: Day The day of the event. A quirk is that on the first or last day of the month, the day may occasionally appear in the wrong month. This is because the program selects events by the time of the geocentric conjunction of the star and moon; however an occultation may occur up to 1.5 hours from this time. Thus for events falling within 1.5 hours of the end or start of a month may be listed in the adjacent month. Such occurrences are obvious when they occur. Time The universal time, in hours, mins and secs. Ph The type of event (phase): D disappearance d - star less than 1 mag brighter than predicted visibility limit. R reappearance r - star less than 1 mag brighter than predicted visibility limit. Gr grazing occultation at site. At mid-occultation, or closest approach, the star is less than 4" from the limb of the moon (either above or below). gr - star less than 1 mag brighter than predicted visibility limit. Star No the star identification number, with the catalogue indicated as follows: nnnn ZC catalogue no. nnnnn or nnnnnn SAO catalogue number Xnnnnn XZ80 catalogue no. ppppnnnnn the Hubble Guide Star Catalogue number (note that this continues through the double star and spectral type fields.) ppppnnnnn? the Hubble Guide Star Catalogue number. The ‘?’ indicates that the GSC indicates the object may not be a star. ? nnnn catalogue no. in another catalogue (With the initial letter of the catalogue file name leading) D the double star code. Sp the star's spectral type Mag the star's magnitude, usually visual. %illum the percent illumination of the moon. If followed by a +, values are for a waxing moon; - for a waning moon and E for illumination during a lunar eclipse. Elon the elongation of the moon from the sun, in degrees. Sun alt the altitude of the sun, but only if it is greater than -12 deg. moon alt the altitude of the moon moon az the azimuth of the moon CA Cusp Angle - the angle of the event around the limb of the moon, measured from the nearest cusp. -'ve values indicate a bright limb event. The cusps are usually N (north) or S (south), but near full moon can be E (East) or W (west). If a lunar eclipse is in progress, CA gives is the % distance from the centre of the umbra, and is followed by a 'U'. Values up to 103% are possible. PA Position Angle - the angle of the event around the limb of the moon, measured from true north VA Vertex Angle - the angle of the event around the limb of the moon measured anticlockwise from the vertex of the lunar limb - ie the point on the limb highest from the horizon. WA Watts Angle - the angle of the event around the limb of the moon, measured eastward from the moon's north pole. Essential for reappearance, as it locates the event with reference to lunar features. To use, mark a map of the moon around the circumference at 10 deg intervals, starting at the north pole. Mare Crisium is at about 300 deg. This provides the Watts angle scale. Long Libn the libration of the moon in longitude, as seen from the site at the time of the event Lat Libn the libration of the moon in latitude; A coefficient for correcting the prediction for changes in site location. The units are seconds of time per minutes of arc. The correction to the prediction for a change in site, in seconds of time, is found by multiplying A by the change in site longitude (in minutes of arc, +'ve to the East) from the prediction site. B same as for A, but for changes in latitude (+'ve to the north). RV Radial Velocity - the radial rate of motion of the star relative to the lunar limb, in milli-arc secs per second. CCT Contact Angle - the difference between the normal to the lunar limb and the direction of lunar motion. values range between -180 and +180 - with values greater than 90( being reappearances, and +'ve values to the north, -'ve to the south. RA The apparent RA of the star. [Note : not at the actual time of the event, but at an integral hour near the time of the event.] Dec The apparent Declination of the star. The messages provide information in the following circumstances: · if a dark-limb occultation occurs less than 20" from the terminator, the distance to the terminator, and to a theoretical 3" high mountain beyond the terminator which could be sunlit, is given. · if there is a grazing occultation of the star nearby. The distances used to indicate whether a graze-nearby message should be generated are set in the ‘Options / Set Output & other options’ – for temporary changes, and under ‘Options / Edit values in Defaults file’. The message gives the latitude of the graze path at the longitude of the prediction site, the change of that latitude with a change in longitude (+'ve to the East), and the cusp angle of the graze. · magnitude, separation and position angle for the components of double stars. · for a small number of double stars with orbital elements, an additional line giving computed PA and separation for the date & time of the occultation. · for variable stars, the variable name, max and min magnitudes, type of variable, and (if the elements are known) the phase in its cycle. Note that for some variables, the magnitude variation is given in place of the minimum magnitude. · for occultations of cluster, planets and asteroids, the duration of the partial occultation. Predictions are also given for a small number of open clusters (objects with M (Messier), NGC, IC, Rup (Ruprecht) &c numbers - and Spectral type set to ' C'. The clusters have been selected on the basis of the magnitude of the brightest cluster member, and the magnitude of that star is listed in the predictions (not the Total Magnitude of the cluster). These predictions also give the time taken for the whole cluster to be occulted (in mins). A map of the moon, showing the location of the star at the time of the occultation, can be displayed by double-clicking on a line of the predictions.