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Observation Summary for Variable Star BI CYG

Total observations:4,450Minimum magnitude: 10.800Maximum magnitude: 8.300
First observation:JD 2441470.492300\1 Jun 1972 23:48:54.720000 UTLatest observation:JD 2460610.396000\26 Oct 2024 21:30:14.400000 UT
Observation MethodNumber of Observations
Visual4,421
Photographic27
CCD2

Back to Basic Summary

Summary by Stars

Observer IdObserver NameNumber of ObservationsFirst Observation JD / UTLatest Observation JD / UTMinimum MagnitudeMaximum Magnitude
HHI D Howarth12441470.492300
1 Jun 1972 23:48:54.720000
2441470.492300
1 Jun 1972 23:48:54.720000
9.9009.900
KXO J Knox2172441539.458300
9 Aug 1972 22:59:57.120000
2442744.270800
27 Nov 1975 18:29:57.120000
10.2008.970
TYM D Taylor242441575.375000
14 Sep 1972 21:00:00.000000
2443861.297200
18 Dec 1978 19:07:58.080000
10.1009.110
PCC Pezzarossa22441884.361100
20 Jul 1973 20:39:59.040000
2441886.375000
22 Jul 1973 21:00:00.000000
9.3509.350
BPJ A Bailey542441990.312500
3 Nov 1973 19:30:00.000000
2442792.252000
14 Jan 1976 18:02:52.800000
10.3009.090
HYP W Hornby22442003.386100
16 Nov 1973 21:15:59.040000
2442309.556200
19 Sep 1974 01:20:55.680000
10.4009.790
SSH W S Smith792442174.520800
7 May 1974 00:29:57.120000
2445506.500000
21 Jun 1983 00:00:00.000000
10.3009.270
BST Brelstaff512442178.461800
10 May 1974 23:04:59.520000
2442817.694400
9 Feb 1976 04:39:56.160000
10.5009.240
MMI A Middlemist2492442212.479100
13 Jun 1974 23:29:54.240000
2452623.295100
14 Dec 2002 19:04:56.640000
10.5009.250
MDR W Middleton812442235.434000
6 Jul 1974 22:24:57.600000
2448597.327000
6 Dec 1991 19:50:52.800000
10.2008.950
MXL R Matthews332442246.541600
18 Jul 1974 00:59:54.240000
2443151.263800
7 Jan 1977 18:19:52.320000
10.2009.350
GJR J Godden1152442249.454100
20 Jul 1974 22:53:54.240000
2445549.600000
3 Aug 1983 02:24:00.000000
10.3009.030
MYA Maudsley492442249.547900
21 Jul 1974 01:08:58.560000
2443165.262500
21 Jan 1977 18:18:00.000000
10.0009.480
GXD Griffin542442363.298600
11 Nov 1974 19:09:59.040000
2443141.302000
28 Dec 1976 19:14:52.800000
10.0309.350
POA K Porter22442427.315900
14 Jan 1975 19:34:53.760000
2442444.293000
31 Jan 1975 19:01:55.200000
9.9609.920
IHG Hirst452442536.503400
4 May 1975 00:04:53.760000
2445699.300000
30 Dec 1983 19:12:00.000000
10.0208.930
WVP B Withers3342442571.530500
8 Jun 1975 00:43:55.200000
2460482.456000
20 Jun 2024 22:56:38.400000
10.6008.700
PBM Peel162442572.447900
8 Jun 1975 22:44:58.560000
2443424.468700
7 Oct 1977 23:14:55.680000
9.9509.350
XBP L Baxter232442617.409700
23 Jul 1975 21:49:58.080000
2442771.291600
24 Dec 1975 18:59:54.240000
10.0309.680
PMM Poxon72442628.504800
4 Aug 1975 00:06:54.720000
2442762.263100
15 Dec 1975 18:18:51.840000
9.9009.080
YGD L Young22442725.475600
8 Nov 1975 23:24:51.840000
2442778.338800
31 Dec 1975 20:07:52.320000
9.7609.720
KGG J Kirby142442956.506900
27 Jun 1976 00:09:56.160000
2443389.402700
2 Sep 1977 21:39:53.280000
10.2009.720
VBJ S Bullivant162442967.486100
7 Jul 1976 23:39:59.040000
2443143.232600
30 Dec 1976 17:34:56.640000
9.7209.460
KDB Kennedy12443006.447900
15 Aug 1976 22:44:58.560000
2443006.447900
15 Aug 1976 22:44:58.560000
9.2309.230
AGS W Albrighton872443062.365200
10 Oct 1976 20:45:53.280000
2457758.274000
4 Jan 2017 18:34:33.600000
10.3009.270
RBJ H Robinson12443093.319400
10 Nov 1976 19:39:56.160000
2443093.319400
10 Nov 1976 19:39:56.160000
9.9609.960
RHFR B I Fraser212443026.413000
4 Sep 1976 21:54:43.200000
2448216.447900
20 Nov 1990 22:44:58.560000
10.5009.240
GCG A V Coady402443290.433300
26 May 1977 22:23:57.120000
2444369.460400
9 May 1980 23:02:58.560000
10.0209.530
GVA Cosgrove52443291.572900
28 May 1977 01:44:58.560000
2443404.460400
17 Sep 1977 23:02:58.560000
9.8009.570
BEL K Brundle1,4932443328.456900
3 Jul 1977 22:57:56.160000
2460582.319000
28 Sep 2024 19:39:21.600000
10.5009.220
PSP J Swift22443354.468700
29 Jul 1977 23:14:55.680000
2443482.304800
4 Dec 1977 19:18:54.720000
10.0009.680
FPP M Filbey62443367.402000
11 Aug 1977 21:38:52.800000
2443415.334000
28 Sep 1977 20:00:57.600000
9.6009.300
HOA J Hollis92443429.350600
12 Oct 1977 20:24:51.840000
2444581.409700
7 Dec 1980 21:49:58.080000
9.9008.910
GHT Gough152443516.354100
7 Jan 1978 20:29:54.240000
2443951.599300
19 Mar 1979 02:22:59.520000
10.0509.620
WHP J Wheeler1482443652.484000
23 May 1978 23:36:57.600000
2446588.447200
6 Jun 1986 22:43:58.080000
10.4509.190
HFG M Hurst262443716.438800
26 Jul 1978 22:31:52.320000
2444351.583300
22 Apr 1980 01:59:57.120000
10.0509.230
YMM R Bell152444115.409700
29 Aug 1979 21:49:58.080000
2444615.293700
10 Jan 1981 19:02:55.680000
10.2009.560
XGG Poyner632444513.475000
30 Sep 1980 23:24:00.000000
2447057.388800
18 Sep 1987 21:19:52.320000
10.0509.250
AXC M Allen42444932.355500
23 Nov 1981 20:31:55.200000
2444982.257600
12 Jan 1982 18:10:56.640000
10.2009.980
VST G Saville72445192.388800
10 Aug 1982 21:19:52.320000
2445293.399300
19 Nov 1982 21:34:59.520000
10.1009.620
NCM J Nicholls1692445222.444400
9 Sep 1982 22:39:56.160000
2448537.315900
7 Oct 1991 19:34:53.760000
10.8009.290
EJJ W L Ells142445321.288800
17 Dec 1982 18:55:52.320000
2445715.200000
15 Jan 1984 16:48:00.000000
9.7608.950
PIR D Pickard42445618.400000
10 Oct 1983 21:36:00.000000
2445704.300000
4 Jan 1984 19:12:00.000000
9.9009.620
CHR H Chambers192445670.800000
2 Dec 1983 07:12:00.000000
2447367.552000
25 Jul 1988 01:14:52.800000
10.4009.350
CMM Currie22445724.500000
25 Jan 1984 00:00:00.000000
2445911.500000
30 Jul 1984 00:00:00.000000
10.30010.200
TTT Tanti92445869.400000
17 Jun 1984 21:36:00.000000
2446669.305500
26 Aug 1986 19:19:55.200000
10.6009.720
DTD Stott3912445884.500000
3 Jul 1984 00:00:00.000000
2448038.390200
26 May 1990 21:21:53.280000
10.3009.190
MTE Metson82445964.400000
20 Sep 1984 21:36:00.000000
2446066.200000
31 Dec 1984 16:48:00.000000
9.9009.530
TQP Mettam452446071.246500
5 Jan 1985 17:54:57.600000
2447157.292300
27 Dec 1987 19:00:54.720000
9.9009.530
ISJ E Isles412446593.585400
12 Jun 1986 02:02:58.560000
2447853.239500
22 Nov 1989 17:44:52.800000
10.4009.140
CPJC P Jones92447303.534700
22 May 1988 00:49:58.080000
2447482.361100
16 Nov 1988 20:39:59.040000
9.6208.970
REKR E Kelly22449588.396500
23 Aug 1994 21:30:57.600000
2449618.379800
22 Sep 1994 21:06:54.720000
9.4209.190
FAMF Hamilton112449630.375600
4 Oct 1994 21:00:51.840000
2450039.315200
17 Nov 1995 19:33:53.280000
9.7809.090
QMT Markham62447030.410000
22 Aug 1987 21:50:24.000000
2456710.726000
22 Feb 2014 05:25:26.400000
9.4309.240
TIHT Hoare52451702.455500
6 Jun 2000 22:55:55.200000
2451777.499300
20 Aug 2000 23:58:59.520000
9.4409.180
DRR C Dryden1622454766.347200
26 Oct 2008 20:19:58.080000
2460298.276000
19 Dec 2023 18:37:26.400000
10.2009.500
BJB J Beesley462454591.611100
5 May 2008 02:39:59.040000
2455516.370800
15 Nov 2010 20:53:57.120000
10.0009.100
HULV Hull12456550.499000
14 Sep 2013 23:58:33.600000
2456550.499000
14 Sep 2013 23:58:33.600000
9.5009.500
RPER Pearce912457219.434000
15 Jul 2015 22:24:57.600000
2460610.396000
26 Oct 2024 21:30:14.400000
10.8008.300
GPFG Fleming22458784.354230
27 Oct 2019 20:30:05.472000
2458819.192070
1 Dec 2019 16:36:34.848000
9.4299.355