20 March 2021
⇐20210319 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210321⇒

NOAA
2 Active Regions
12810
12808

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 W30S52
(302",-687") 		E84-W51
(135) 		11.3 -1.7 -4.6e21
2 W25N17
(387",378") 		W21-W28
(7) 		0.1 -0.9 -2.0e19
3 E44S06
(-673",-12") 		E48-E41
(7) 		0.1 -0.6 -1.5e19
4 W18S16
(294",-154") 		W16-W20
(4) 		0.1 -1.2 -2.2e19
5 E28S05
(-457",25") 		E32-E25
(7) 		0.1 -0.7 -1.3e19
6 E27S07
(-436",-19") 		E28-E26
(2) 		0.0 -1.5 -1.1e19

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 20-Mar-2021 20:30 UT .