27 February 2022
20220226 Week Rotation Today Rotation Week 20220228

NOAA
4 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W32S16
(499",-173")
W00-W56
(56)
5.6 0.2 2.3e20
2 E22S10
(-352",-47")
E36-E11
(25)
3.3 -0.6 -3.2e20
3 W37S34
(483",-461")
W20-W47
(27)
1.8 2.4 9.2e20
4 E52S28
(-673",-385")
E61-E39
(22)
0.7 -1.5 -2.7e20
5 W55S12
(779",-129")
W52-W59
(7)
0.2 1.2 5.7e19
6 E25S30
(-358",-380")
E31-E20
(11)
0.1 -6.2 -1.6e20
7 W30S60
(237",-786")
W16-W41
(25)
0.1 -0.7 -2.7e19
8 E10S28
(-145",-345")
E12-E06
(6)
0.1 -1.8 -3.0e19
9 W09S86
(11",-950")
E86-W46
(132)
0.1 -0.5 -2.5e19
10 E23S01
(-376",99")
E25-E21
(4)
0.0 1.7 1.3e19
11 E53S20
(-728",-257")
E54-E51
(3)
0.0 -1.1 -1.1e19
12 E31S10
(-499",-66")
E34-E28
(6)
0.0 -0.9 -5.4e18

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 27-Feb-2022 20:30 UT .