23 March 2021
⇐20210322 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210324⇒

NOAA
2 Active Regions
12811
12810

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E07S07
(-118",-4") 		E16-W06
(22) 		2.3 -0.6 -2.0e20
2 W62S65
(356",-844") 		E02-W83
(85) 		1.4 -0.7 -5.0e20
3 E27S23
(-400",-281") 		E44-E09
(35) 		1.1 -2.1 -4.1e20
4 E37N63
(-261",894") 		E42-W04
(46) 		0.8 0.5 2.2e20
5 E35S75
(-144",-898") 		E87-W01
(88) 		0.7 -1.0 -3.0e20
6 W43S13
(642",-140") 		W35-W50
(15) 		0.4 1.0 8.2e19
7 E53S34
(-633",-482") 		E58-E44
(14) 		0.3 -1.3 -9.4e19
8 W68S33
(754",-478") 		W62-W74
(12) 		0.2 -1.4 -8.4e19
9 E19N09
(-307",257") 		E21-E16
(5) 		0.1 -1.5 -2.1e19
10 W36S08
(568",-39") 		W34-W40
(6) 		0.1 0.6 8.3e18
11 W72S25
(835",-364") 		W66-W77
(11) 		0.1 -2.8 -9.7e19

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 23-Mar-2021 20:30 UT .