Predictions for Grazing Occultation of ZC2686, 2016 Jul 18
Graze profile
Grazing Occultation of 2686SB9 Magnitude 5.1 [Red = 5.1]
Date: 2016 Jul 18 9h 24m, to 2016 Jul 18 9h 44m
Nominal site altitude 100m
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 -42 13 41.7 9 23 40 53 61 0.75 183.2 187.01 8.49S
167 30 0 -42 19 21.5 9 24 30 53 60 0.74 183.1 186.92 8.57S
168 0 0 -42 24 53.6 9 25 20 54 59 0.73 183.0 186.83 8.66S
168 30 0 -42 30 18.0 9 26 10 54 58 0.72 182.9 186.74 8.75S
169 0 0 -42 35 34.7 9 27 0 55 57 0.71 182.8 186.65 8.84S
169 30 0 -42 40 43.6 9 27 50 55 56 0.70 182.7 186.55 8.93S
170 0 0 -42 45 44.6 9 28 40 55 55 0.69 182.6 186.46 9.03S
170 30 0 -42 50 37.7 9 29 31 56 54 0.68 182.5 186.37 9.12S
171 0 0 -42 55 22.9 9 30 22 56 53 0.67 182.4 186.27 9.21S
171 30 0 -43 0 0.1 9 31 13 56 52 0.66 182.3 186.18 9.31S
172 0 0 -43 4 29.3 9 32 4 57 51 0.65 182.2 186.08 9.41S
172 30 0 -43 8 50.5 9 32 55 57 50 0.65 182.1 185.98 9.50S
173 0 0 -43 13 3.7 9 33 47 58 48 0.64 182.0 185.88 9.60S
173 30 0 -43 17 8.7 9 34 38 58 47 0.63 182.0 185.78 9.70S
174 0 0 -43 21 5.7 9 35 30 58 46 0.62 181.9 185.68 9.80S
174 30 0 -43 24 54.4 9 36 21 59 45 0.61 181.7 185.58 9.90S
175 0 0 -43 28 35.0 9 37 13 59 44 0.60 181.6 185.48 10.00S
175 30 0 -43 32 7.4 9 38 5 59 43 0.60 181.5 185.38 10.10S
176 0 0 -43 35 31.5 9 38 57 59 41 0.59 181.4 185.27 10.20S
176 30 0 -43 38 47.5 9 39 50 60 40 0.58 181.3 185.17 10.31S
177 0 0 -43 41 55.1 9 40 42 60 39 0.58 181.2 185.07 10.41S
177 30 0 -43 44 54.4 9 41 34 60 38 0.57 181.1 184.96 10.52S
178 0 0 -43 47 45.4 9 42 27 61 36 0.56 181.0 184.85 10.62S
178 30 0 -43 50 28.1 9 43 20 61 35 0.56 180.9 184.75 10.73S
179 0 0 -43 53 2.5 9 44 12 61 34 0.55 180.8 184.64 10.83S
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.
2686 is triple:
This next pair is not confirmed
**Aa,Ab 6.0 6.0 0.10" 90.0 (OCc 22) Graze path of ? approximately 0.0 km south, and 0.3 secs later compared to the primary
- refer to graze profile for exact distances
AB 5.1 14.1 22.8" 181.8 (SEE 354) Graze path of B approximately 46.4 km north, and 0.2 secs later compared to A
- refer to graze profile for exact distances
C A S S I N I R E G I O N G R A Z E
Librations Long -4.14 Lat -6.50
P +186.35 D -5.78
Illumination of moon 97%+
Elongation of Moon 161
Vertical Profile Scale approx. 2.07 km/arcsec at mean distance of moon
Horizontal Scale Factor 1.39 deg/min
At longitude 173.00:
Limiting Magnitudes for various telescope apertures (in cm)
CA\Tdia 5 10 15 20 25 30 35
5.6 2.2 3.7 4.4 4.9 5.2 5.5 5.6
7.6 2.2 3.7 4.4 4.9 5.2 5.5 5.6
9.6 2.9 4.3 5.1 5.5 5.9 6.1 6.3
11.6 3.6 5.1 5.8 6.3 6.7 6.9 7.1
13.6 4.5 5.9 6.7 7.2 7.5 7.8 8.0
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Results of Observer Scan UT
Site Long. Lat. Dist. h m s
Chch graze 172.6 -43.5 40km 9 33 9.3
Lunar Limb Profile
