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GRAZING OCCULTATION OF ZC3431 on August 11, 2006 |
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A grazing occultation of magnitude 6.6 ZC 3431 occurs at about 15:15 UT on Friday August 11 (about 3.15 am NZST on the morning of Saturday August 12). This occultation will be a difficult one since telescopes of eight inches aperture and above are likely to be required. Also the profile of the lunar limb at the point of the graze is not particularly spectacular. However the graze does run the length of the country which means that many observers throughout New Zealand may have the opportuity to observe it.
Graze Path:
| Wellington: |
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The graze "limit line" (line at which the star would just graze along the moon's limb if it were completely smooth) passes through Seatoun, and then through Gracefield, the eastern Hutt hills, Stokes Valley, Silverstream, Heretaunga and Trentham. Then through Woodville and west of Napier and Gisborne. However because the moon's limb is not smooth, the band over which the graze will be visible extends from about 2 km NORTH (in this case, northwest) to 4 km SOUTH (southeast) of this line, measured perpendicular to the line. |
| Heretaunga/Trentham: | ||
| Napier: | ||
| Gisborne: |
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Grazing Occultation of ZC 3431 Magnitude 6.6 on 2006 August 11 U.T.
Nominal site altitude 0m E. Longit. Latitude U.T. Sun Moon TanZ PA WA CA o ' " o ' " h m s Alt Alt Az o o o 170 0 00 -45 38 41 15 6 38 48 350 0.90 320.9 342.66 15.92N 170 7 30 -45 32 22 15 6 56 48 350 0.90 320.9 342.63 15.95N 170 15 0 -45 26 2 15 7 14 48 350 0.90 320.8 342.61 15.97N 170 22 30 -45 19 40 15 7 32 48 349 0.89 320.8 342.58 16.00N 170 30 0 -45 13 16 15 7 49 48 349 0.89 320.8 342.56 16.02N 170 37 30 -45 6 52 15 8 7 48 349 0.89 320.8 342.53 16.05N 170 45 0 -45 0 25 15 8 25 48 348 0.89 320.7 342.51 16.07N 170 52 30 -44 53 58 15 8 44 48 348 0.89 320.7 342.49 16.10N 171 0 00 -44 47 29 15 9 2 49 348 0.88 320.7 342.46 16.12N 171 7 30 -44 40 58 15 9 20 49 347 0.88 320.7 342.44 16.14N 171 15 0 -44 34 27 15 9 38 49 347 0.88 320.6 342.41 16.17N 171 22 30 -44 27 53 15 9 57 49 347 0.88 320.6 342.39 16.19N 171 30 00 -44 21 19 15 10 15 49 346 0.87 320.6 342.37 16.22N 171 37 30 -44 14 43 15 10 34 49 346 0.87 320.6 342.34 16.24N 171 45 0 -44 8 5 15 10 53 49 346 0.87 320.5 342.32 16.26N 171 52 30 -44 1 27 15 11 11 49 345 0.87 320.5 342.29 16.29N 172 0 00 -43 54 47 15 11 30 49 345 0.86 320.5 342.27 16.31N 172 7 30 -43 48 5 15 11 49 49 345 0.86 320.5 342.25 16.33N 172 15 0 -43 41 22 15 12 8 49 344 0.86 320.5 342.23 16.35N 172 22 30 -43 34 38 15 12 27 49 344 0.86 320.4 342.20 16.38N 172 30 0 -43 27 53 15 12 46 49 344 0.86 320.4 342.18 16.40N 172 37 30 -43 21 6 15 13 5 49 343 0.85 320.4 342.16 16.42N 172 45 0 -43 14 18 15 13 25 50 343 0.85 320.4 342.14 16.44N 172 52 30 -43 7 28 15 13 44 50 343 0.85 320.3 342.12 16.46N 173 0 00 -43 0 38 15 14 3 50 342 0.85 320.3 342.08 16.50N 173 7 30 -42 53 45 15 14 23 50 342 0.85 320.3 342.06 16.52N 173 15 0 -42 46 52 15 14 42 50 342 0.84 320.3 342.04 16.54N 173 22 30 -42 39 57 15 15 2 50 341 0.84 320.2 342.02 16.56N 173 30 0 -42 33 2 15 15 22 50 341 0.84 320.2 342.00 16.58N 173 37 30 -42 26 4 15 15 42 50 341 0.84 320.2 341.98 16.60N 173 45 0 -42 19 6 15 16 1 50 340 0.84 320.2 341.96 16.62N 173 52 30 -42 12 6 15 16 21 50 340 0.84 320.2 341.94 16.64N 174 0 00 -42 5 5 15 16 41 50 339 0.83 320.1 341.91 16.66N 174 7 30 -41 58 3 15 17 1 50 339 0.83 320.1 341.89 16.68N 174 15 0 -41 51 0 15 17 22 50 339 0.83 320.1 341.87 16.70N 174 22 30 -41 43 56 15 17 42 50 338 0.83 320.1 341.85 16.72N 174 30 0 -41 36 50 15 18 2 50 338 0.83 320.1 341.84 16.74N 174 37 30 -41 29 43 15 18 22 50 338 0.83 320.0 341.82 16.76N 174 45 0 -41 22 35 15 18 43 50 337 0.83 320.0 341.80 16.78N 174 52 30 -41 15 26 15 19 3 51 337 0.82 320.0 341.78 16.80N 175 0 00 -41 8 16 15 19 24 51 337 0.82 320.0 341.76 16.82N 175 7 30 -41 1 4 15 19 44 51 336 0.82 320.0 341.74 16.84N 175 15 0 -40 53 52 15 20 5 51 336 0.82 320.0 341.72 16.85N 175 22 30 -40 46 38 15 20 26 51 335 0.82 319.9 341.71 16.87N 175 30 0 -40 39 24 15 20 47 51 335 0.82 319.9 341.69 16.89N 175 37 30 -40 32 8 15 21 8 51 335 0.82 319.9 341.67 16.91N 175 45 0 -40 24 51 15 21 28 51 334 0.81 319.9 341.66 16.92N 175 52 30 -40 17 33 15 21 49 51 334 0.81 319.9 341.64 16.94N 176 0 00 -40 10 15 15 22 10 51 333 0.81 319.8 341.62 16.96N 176 7 30 -40 2 55 15 22 32 51 333 0.81 319.8 341.61 16.97N 176 15 0 -39 55 34 15 22 53 51 333 0.81 319.8 341.59 16.99N 176 22 30 -39 48 12 15 23 14 51 332 0.81 319.8 341.57 17.00N 176 30 0 -39 40 50 15 23 35 51 332 0.81 319.8 341.56 17.02N 176 37 30 -39 33 26 15 23 57 51 332 0.81 319.8 341.54 17.03N 176 45 0 -39 26 2 15 24 18 51 331 0.81 319.8 341.53 17.05N 176 52 30 -39 18 37 15 24 39 51 331 0.81 319.7 341.52 17.06N 177 0 00 -39 11 10 15 25 1 51 330 0.81 319.7 341.50 17.08N 177 7 30 -39 3 43 15 25 22 51 330 0.80 319.7 341.49 17.09N 177 15 0 -38 56 16 15 25 44 51 330 0.80 319.7 341.47 17.10N 177 22 30 -38 48 47 15 26 6 51 329 0.80 319.7 341.46 17.12N 177 30 0 -38 41 17 15 26 27 51 329 0.80 319.7 341.45 17.13N 177 37 30 -38 33 47 15 26 49 51 328 0.80 319.7 341.44 17.14N 177 45 0 -38 26 16 15 27 11 51 328 0.80 319.7 341.42 17.15N 177 52 30 -38 18 45 15 27 33 51 328 0.80 319.6 341.41 17.17N 178 0 00 -38 11 12 15 27 54 51 327 0.80 319.6 341.40 17.18N Path coordinates are referred to WGS84 (as used by GPS). Librations Long +1.47 Lat +0.14 P +341.4 D -0.3 Illumination of moon 93%- Elongation of Moon 149 Vertical Profile Scale 2.37 km/arcsec at mean distance of moon Horizontal Scale Factor 1.6 deg/min Limiting Magnitudes for various telescope apertures (in mm) CA\Tdia 50 100 150 200 250 300 350 13.2 5.0 6.5 7.2 7.7 8.1 8.3 8.5 15.2 5.4 6.9 7.6 8.1 8.5 8.7 8.9 17.2 5.5 6.9 7.7 8.2 8.6 8.8 9.0 19.2 5.5 6.9 7.7 8.2 8.6 8.8 9.0 21.2 5.5 6.9 7.7 8.2 8.6 8.8 9.0
To participate in this graze please contact Haritina Mogosanu as soon as possible.
