Viewing archive of Tuesday, 16 February 1999 - Sunspot regions
It appears that the image of the visible solar disk for this day in history is missing.
| Sunspot number | New regions | Background flux | Maximum flux | C | M |
|---|---|---|---|---|---|
| 176 9 | 2 2 | C1.31 | M4.64 | 8 | 3 |
Sunspot regions
Region 8456 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -11 | 30 | BXO | N22W37 | |
Region 8457 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 20 -12 | 600 -60 | EKI | N15W18 | |
Region 8458 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 25 -5 | 640 50 | EKC | S22W09 | |
Solar flares on this day | ||||
| M4.64 C2.67 | ||||
Region 8459 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 9 3 | 90 20 | DRO | S30W43 | |
Region 8460 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 -4 | 50 20 | CSO | S17E04 | |
Region 8462 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 17 -4 | 130 50 | DAO | N19W06 | |
Solar flares on this day | ||||
| C9.86 C7.67 | ||||
Region 8463 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 1 | 80 20 | HSX | S16E20 | |
Region 8464 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 -1 | 90 | CSO | N20E28 | |
Solar flares on this day | ||||
| M1.35 | ||||
All times in UTC
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| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
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| Monthly mean Sunspot Number | |
|---|---|
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This day in history*
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