12 March 2021
⇐20210311 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210313⇒

NOAA
3 Active Regions
12808
12809
12807

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 E02N25
(-30",515") 		E29-W35
(64) 		10.0 0.4 6.7e20
2 E04S64
(-27",-808") 		E88-W62
(150) 		5.7 -0.9 -1.4e21
3 W21S38
(270",-501") 		W16-W27
(11) 		0.2 -1.9 -8.6e19
4 W43S23
(604",-296") 		W37-W48
(11) 		0.2 -1.0 -4.3e19
5 W21N17
(333",387") 		W18-W24
(6) 		0.1 -0.8 -1.3e19
6 W34S28
(484",-357") 		W32-W38
(6) 		0.1 -1.7 -2.0e19
7 W54N01
(781",93") 		W51-W58
(7) 		0.1 -1.0 -1.4e19
8 E72S25
(-830",-377") 		E76-E68
(8) 		0.0 -3.8 -6.5e19

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 12-Mar-2021 20:30 UT .