Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Monthly Sunspot Classification and Coordinates

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June 2022 Monthly report →

Each group: class – number of spots (B, ΔL). NS: No sunspot.

DrawingDayRClassification and Coordinates
01 63 DAC – 15 (16, 25.6W), HA_ – 2 (-14, 18.3W), HA_ – 1 (-33, 08.4W), BXI – 5 (-16, 13E)
02 66 DSI – 17 (16, 38.1W), DSO – 2 (-14, 29.5W), HS_ – 1 (-33, 20.1W), DSO – 6 (-16, 01E)
03 59 HS_ – 1 (16, 60.7W), AX_ – 3 (18, 52.3W), HS_ – 2 (-13, 46.9W), HA_ – 1 (-33, 36.5W), DSO – 2 (-15, 16.1W)
04 91 CHO – 2 (16, 70.2W), BXO – 4 (16, 61.3W), AX_ – 2 (13, 62E), DSO – 2 (-14, 56.9W), DSO – 6 (-35, 47.4W), DSO – 4 (-16, 27.3W), AX_ – 1 (-18, 70.1E)
05 46 HA_ – 2 (-14, 71.2W), HS_ – 1 (-34, 58.7W), BXO – 2 (-16, 41.5W), AX_ – 1 (-17, 56.5E)
06 34 AX_ – 1 (-35, 71.3W), BXO – 2 (-17, 54W), AX_ – 1 (-18, 42.8E)
08 0 NS
09 19 AX_ – 9 (-16, 00.9W)
10 64 AX_ – 1 (20, 24.2E), BXI – 3 (19, 73.3E), HH_ – 1 (21, 83.5E), BXI – 8 (-16, 14.8W), AX_ – 1 (-23, 06.2E)
11 68 DSI – 6 (22, 54.9E), HS_ – 3 (23, 65.8E), AX_ – 1 (-28, 58.7W), AX_ – 3 (-15, 33.4W), CRO – 5 (-24, 41.8E)
12 45 CRI – 5 (18, 44.6E), CSI – 4 (19, 55E), BXI – 6 (-30, 35.1E)
13 116 CAI – 5 (20, 29.3E), DAI – 10 (21, 40.5E), BXI – 7 (17, 61.7E), ?__ – 2 (2, 76.1E), AX_ – 3 (-13, 32.1W), BXI – 4 (-20, 08.5E), BXO – 4 (-25, 17E), ?__ – 1 (-17, 72.7E)
14 154 ESC – 9 (20, 18E), CHI – 11 (21, 28.7E), DAI – 13 (18, 49.7E), CSO – 4 (2, 64.1E), DRI – 6 (-12, 44.8W), DHI – 18 (-25, 04.7E), CAI – 9 (-26, 10E), CAO – 4 (-17, 62.9E)
15 196 ERC – 16 (19, 04.1E), CAI – 6 (20, 14.7E), DAC – 18 (18, 37E), CSI – 5 (1, 51E), AX_ – 1 (13, 79.9E), DAI – 6 (-12, 56.6W), HA_ – 2 (-20, 19.7W), DAC – 15 (-25, 09.3W), DAC – 20 (-27, 03.8W), CAI – 7 (-16, 51.3E)
16 157 DRC – 16 (18, 08.1W), CSO – 2 (20, 00.5E), DRI – 12 (17, 25.4E), HH_ – 2 (1, 37.2E), BXO – 2 (14, 63.2E), DRO – 3 (-13, 67.7W), DRI – 9 (-22, 27.5W), DAI – 14 (-27, 16.4W), CAI – 7 (-18, 38.9E)
17 160 DSI – 18 (18, 21.5W), HS_ – 2 (20, 09.3W), AX_ – 6 (16, 07.6E), HS_ – 1 (2, 21.8E), BXI – 7 (16, 42.5E), AX_ – 1 (13, 49.9E), AX_ – 1 (-20, 49.1W), CSO – 4 (-23, 37.3W), DSO – 8 (-28, 29.2W), BXI – 12 (-18, 25.8E)
18 197 AX_ – 2 (14, 57.7W), AX_ – 1 (14, 53.4W), CAI – 20 (19, 37.1W), HH_ – 15 (20, 32.4W), HS_ – 1 (21, 24.2W), AX_ – 1 (17, 05.1W), HS_ – 1 (2, 08.7E), CAI – 10 (16, 29.5E), BXI – 7 (-20, 58.4W), CSO – 3 (-25, 48.7W), AX_ – 3 (-29, 39W), BXI – 13 (-17, 11E)
19 108 CSI – 9 (19, 50.9W), BXI – 6 (19, 45W), HS_ – 1 (21, 37.4W), HS_ – 1 (2, 02.5W), DAI – 13 (15, 16.5E), BXO – 3 (-25, 61W), BXI – 5 (-17, 00.5W)
20 91 CAI – 4 (18, 64.9W), CAO – 3 (20, 57.9W), HS_ – 1 (20, 50.7W), HS_ – 1 (1, 16.8W), DAI – 21 (15, 03.4E), AX_ – 1 (-18, 17.9W)
21 107 ?__ – 2 (18, 77.2W), ?__ – 1 (20, 69.1W), HS_ – 1 (21, 62.8W), HS_ – 1 (1, 28.3W), EAC – 24 (16, 09.7W), BXI – 7 (-18, 26.7W), ?__ – 1 (-13, 81.7E)
22 93 HH_ – 1 (21, 77W), EKC – 30 (16, 24.1W), AX_ – 1 (18, 46E), CRI – 10 (-18, 41.7W), HH_ – 1 (-13, 65.8E)
23 79 HS_ – 1 (1, 55.1W), EKC – 30 (15, 36.7W), CSI – 3 (-18, 55.7W), DSC – 5 (-12, 52.7E)
24 42 HS_ – 1 (1, 69.9W), EHC – 9 (16, 51.2W), CHO – 2 (-12, 38.6E)
25 46 EHI – 10 (18, 65.6W), CSO – 4 (-12, 25.3E), AX_ – 2 (-7, 29.5E)
26 36 ?__ – 7 (17, 76.8W), CAI – 9 (-12, 11.8E)
27 58 BXI – 6 (16, 59.3W), AX_ – 2 (9, 02.6E), CAI – 8 (-12, 01.9W), AX_ – 2 (-19, 34.8E)
28 90 HS_ – 2 (16, 76.9W), AX_ – 4 (17, 72.3W), HA_ – 6 (9, 11.6W), DHO – 8 (-12, 15W), BXI – 4 (-19, 22.3E), BXI – 6 (-12, 31.4E)
29 68 BXI – 4 (8, 24.3W), DSC – 11 (-13, 26.4W), AX_ – 1 (-20, 12.1E), AX_ – 1 (-13, 21.1E), AX_ – 1 (-12, 49.8E)
30 42 AX_ – 1 (10, 33.9W), CSO – 5 (-12, 39.1W), BXI – 6 (-11, 37.6E)