Predictions for Grazing Occultation of SAO128449 Apr 16
Graze profile
Grazing Occultation of 128449 M* Magnitude 7.6 [Red = 6.8] s
Date: 2015 Apr 16 17h 58m, to 2015 Apr 16 18h 1m
Nominal site altitude 50m
E. Longit. Latitude U.T. Sun Moon TanZ PA AA CA
o ' " o ' " h m s Alt Alt Az o o o
167 0 0 -43 0 27 17 57 43 9 81 6.67 160.3 185.21 0.93S
167 30 0 -42 58 25 17 57 48 9 81 6.38 160.2 185.15 0.88S
168 0 0 -42 56 18 17 57 53 9 80 6.11 160.1 185.09 0.82S
168 30 0 -42 54 6 17 57 59 10 80 5.86 160.1 185.03 0.76S
169 0 0 -42 51 49 17 58 4 10 80 5.63 160.0 184.97 0.70S
169 30 0 -42 49 27 17 58 10 10 79 5.42 160.0 184.91 0.64S
170 0 0 -42 47 1 17 58 17 11 79 5.22 159.9 184.85 0.58S
170 30 0 -42 44 30 17 58 24 11 79 5.04 159.8 184.79 0.52S
171 0 0 -42 41 54 17 58 31 12 78 4.86 159.8 184.73 0.46S
171 30 0 -42 39 13 17 58 38 12 78 4.70 159.7 184.67 0.40S
172 0 0 -42 36 26 17 58 46 12 77 4.55 159.7 184.61 0.34S
172 30 0 -42 33 35 17 58 54 13 77 4.40 159.6 184.55 0.27S
173 0 0 -42 30 39 17 59 2 13 77 4.27 159.5 184.48 0.21S
173 30 0 -42 27 38 17 59 11 -12 14 76 4.14 159.5 184.42 0.15S
174 0 0 -42 24 32 17 59 20 -11 14 76 4.01 159.4 184.36 0.08S
174 30 0 -42 21 20 17 59 29 -11 14 76 3.90 159.3 184.29 0.02S
175 0 0 -42 18 3 17 59 38 -11 15 75 3.79 159.3 184.23 -0.04S
175 30 0 -42 14 42 17 59 48 -10 15 75 3.68 159.2 184.16 -0.11S
176 0 0 -42 11 14 17 59 59 -10 16 74 3.58 159.2 184.10 -0.18S
176 30 0 -42 7 42 18 0 9 -9 16 74 3.49 159.1 184.03 -0.24S
177 0 0 -42 4 4 18 0 20 -9 16 74 3.40 159.0 183.96 -0.31S
177 30 0 -42 0 20 18 0 32 -8 17 73 3.31 159.0 183.90 -0.38S
178 0 0 -41 56 31 18 0 44 -8 17 73 3.22 158.9 183.83 -0.44S
178 30 0 -41 52 36 18 0 56 -8 18 73 3.14 158.8 183.76 -0.51S
179 0 0 -41 48 36 18 1 8 -7 18 72 3.07 158.7 183.69 -0.58S
Path coordinates are referred to WGS84 (as used by GPS), with the
nominal site altitude being referenced to Mean Sea Level. The path
is adjusted for the effects of refraction at low moon altitudes.
Projected diameter of star 3 meters [Estimated]
128449 is variable:
128449 = NSV 26159, 7.58 to 7.67, Hp
C A S S I N I R E G I O N G R A Z E
Librations Long +0.50 Lat -1.71
P +184.47 D -1.48
Illumination of moon 6%-
Elongation of Moon 27
Vertical Profile Scale 2.06 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.95 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
-3.8 6.4 7.8 8.5 9.0 9.3 9.6 9.7
-1.8 7.1 8.5 9.3 9.8 10.2 10.4 10.6
0.2 7.2 8.7 9.5 10.0 10.4 10.7 10.9
2.2 7.3 8.7 9.5 10.1 10.4 10.7 10.9
4.2 7.3 8.8 9.6 10.1 10.5 10.8 11.0
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 108km 17 58 56
MidNZ 173.0 -41.0 166km 17 59 2
Wellington 174.8 -41.3 112km 17 59 35
Lunar Limb Profile
