Predictions for Grazing Occultation of ZC 2349, 2009 Jul 31
Grazing Occultation of 2349SB1 Magnitude 2.9 [Red = 0.0] v
R2349 = Al Niyat = sigma Scorpii
Date: 2009 Jul 31 13h 5m, to 2009 Jul 31 13h 13m
Nominal site altitude 100m
- Click here for the Google Earth .kml file.
- The red "limit line" on this is defined by the co-ordinates below.
- The "limit line" corresponds to the zero km line on the lunar limb profile at the bottom of this page.
- For this graze events can be expected to be seen from a band stretching from about 3 km north
to about 4 km south of the "limit line".
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
167 30 0 -44 37 45 13 4 30 33 265 1.52 178.3 167.80 9.09S
167 40 0 -44 33 47 13 4 41 33 265 1.53 178.3 167.77 9.12S
167 50 0 -44 29 47 13 4 52 33 265 1.54 178.3 167.75 9.14S
168 0 0 -44 25 47 13 5 2 33 265 1.55 178.2 167.73 9.16S
168 10 0 -44 21 45 13 5 13 33 265 1.56 178.2 167.71 9.18S
168 20 1 -44 17 43 13 5 24 33 265 1.57 178.2 167.68 9.21S
168 30 1 -44 13 40 13 5 35 32 264 1.58 178.2 167.66 9.23S
168 40 1 -44 9 36 13 5 45 32 264 1.59 178.2 167.64 9.25S
168 50 1 -44 5 32 13 5 56 32 264 1.60 178.1 167.62 9.27S
169 0 1 -44 1 26 13 6 6 32 264 1.61 178.1 167.60 9.29S
169 10 1 -43 57 20 13 6 17 32 264 1.62 178.1 167.58 9.31S
169 20 1 -43 53 12 13 6 27 32 263 1.63 178.1 167.56 9.33S
169 30 1 -43 49 4 13 6 38 31 263 1.64 178.0 167.54 9.35S
169 40 2 -43 44 55 13 6 48 31 263 1.65 178.0 167.52 9.37S
169 50 2 -43 40 45 13 6 59 31 263 1.66 178.0 167.50 9.39S
170 0 2 -43 36 35 13 7 9 31 263 1.67 178.0 167.48 9.41S
170 10 2 -43 32 23 13 7 20 31 263 1.68 178.0 167.46 9.43S
170 20 2 -43 28 11 13 7 30 31 262 1.69 177.9 167.44 9.45S
170 30 2 -43 23 58 13 7 40 30 262 1.70 177.9 167.42 9.47S
170 40 2 -43 19 44 13 7 50 30 262 1.71 177.9 167.40 9.49S
170 50 2 -43 15 30 13 8 0 30 262 1.72 177.9 167.37 9.52S
171 0 3 -43 11 14 13 8 11 30 262 1.74 177.9 167.35 9.54S
171 10 3 -43 6 58 13 8 21 30 262 1.75 177.8 167.33 9.56S
171 20 3 -43 2 41 13 8 31 30 261 1.76 177.8 167.31 9.58S
171 30 3 -42 58 23 13 8 41 29 261 1.77 177.8 167.29 9.60S
171 40 3 -42 54 5 13 8 51 29 261 1.78 177.8 167.28 9.61S
171 50 3 -42 49 45 13 9 1 29 261 1.79 177.8 167.26 9.63S
172 0 3 -42 45 25 13 9 11 29 261 1.81 177.7 167.24 9.65S
172 10 3 -42 41 4 13 9 21 29 261 1.82 177.7 167.22 9.67S
172 20 3 -42 36 43 13 9 30 29 260 1.83 177.7 167.20 9.69S
172 30 4 -42 32 20 13 9 40 28 260 1.84 177.7 167.19 9.70S
172 40 4 -42 27 57 13 9 50 28 260 1.85 177.7 167.17 9.72S
172 50 4 -42 23 33 13 10 0 28 260 1.87 177.7 167.15 9.74S
173 0 4 -42 19 9 13 10 9 28 260 1.88 177.6 167.13 9.76S
173 10 4 -42 14 43 13 10 19 28 260 1.89 177.6 167.12 9.77S
173 20 4 -42 10 17 13 10 28 28 259 1.91 177.6 167.10 9.79S
173 30 4 -42 5 51 13 10 38 28 259 1.92 177.6 167.08 9.81S
173 40 4 -42 1 23 13 10 47 27 259 1.93 177.6 167.07 9.82S
173 50 5 -41 56 55 13 10 57 27 259 1.95 177.6 167.05 9.84S
174 0 5 -41 52 26 13 11 6 27 259 1.96 177.5 167.03 9.86S
174 10 5 -41 47 57 13 11 16 27 259 1.98 177.5 167.02 9.87S
174 20 5 -41 43 26 13 11 25 27 258 1.99 177.5 167.00 9.89S
174 30 5 -41 38 55 13 11 34 27 258 2.00 177.5 166.98 9.91S
174 40 5 -41 34 24 13 11 43 26 258 2.02 177.5 166.97 9.92S
174 50 5 -41 29 51 13 11 53 26 258 2.03 177.5 166.95 9.94S
175 0 5 -41 25 18 13 12 2 26 258 2.05 177.4 166.94 9.95S
175 10 6 -41 20 45 13 12 11 26 258 2.06 177.4 166.92 9.97S
175 20 6 -41 16 10 13 12 20 26 257 2.08 177.4 166.91 9.98S
175 30 6 -41 11 35 13 12 29 26 257 2.09 177.4 166.89 10.00S
175 40 6 -41 7 0 13 12 38 25 257 2.11 177.4 166.88 10.01S
175 50 6 -41 2 23 13 12 47 25 257 2.13 177.4 166.86 10.03S
176 0 6 -40 57 47 13 12 56 25 257 2.14 177.4 166.85 10.04S
176 10 6 -40 53 9 13 13 4 25 257 2.16 177.3 166.83 10.06S
176 20 6 -40 48 31 13 13 13 25 257 2.18 177.3 166.82 10.07S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level.
2349 = sig Sco, 2.86 to 2.94V, Type BCEP, Period 0.2468390 days, Phase 27 %, Risetime = 3.0 hours
2349 is quadruple: AB 3.3 5.3 350.0 : Aa 3.1 5.2 0.46" 223.2 : Aa-B 2.9 8.4 19.8" 273.3
Librations Long +4.80 Lat +5.00
P +167.65 D +6.20
Illumination of moon 75%+
Elongation of Moon 119
Vertical Profile Scale 2.08 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.73 deg/min
At longitude 172.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
5.7 4.5 6.0 6.7 7.1 7.4 7.6 7.8
7.7 5.4 6.8 7.5 8.0 8.3 8.5 8.7
9.7 5.4 6.8 7.6 8.0 8.3 8.5 8.7
11.7 5.4 6.8 7.6 8.0 8.3 8.6 8.7
13.7 5.4 6.8 7.6 8.0 8.4 8.6 8.7
Lunar Limb Profile
