1 March 2021
⇐20210228 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210302⇒

NOAA
3 Active Regions
12804
12803
12805

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 E26S01
(-423",96") 		E56-W06
(62) 		10.9 0.6 1.1e21
2 W41S55
(361",-740") 		E85-W47
(132) 		2.6 -1.6 -1.2e21
3 W18N12
(289",322") 		W00-W28
(28) 		2.0 -0.3 -1.1e20
4 E45N09
(-676",236") 		E54-E37
(17) 		0.2 -0.7 -2.6e19
5 E64S76
(-209",-919") 		E79-E43
(36) 		0.1 -0.6 -4.3e19
6 W08N04
(140",189") 		W06-W10
(4) 		0.1 -1.2 -1.3e19
7 W29N08
(465",247") 		W27-W30
(3) 		0.1 2.0 2.0e19
8 E24S08
(-392",-19") 		E25-E22
(3) 		0.0 -2.3 -1.6e19

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 1-Mar-2021 20:30 UT .