5 May 2019
⇐20190504 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190506⇒

NOAA
1 Active Region
12740

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 W14S20
(211",-265") 		E19-W31
(50) 		6.8 -0.2 -2.5e20
2 -524
(-793",E00S60") 		118
(4.6e05) 		-0.7 5.6 2.6e22
3 W21N17
(330",330") 		W10-W29
(19) 		1.6 -0.2 -8.9e19
4 W29N69
(165",904") 		W03-W42
(39) 		0.4 1.1 2.1e21
5 W10N30
(143",529") 		W06-W13
(7) 		0.1 -0.7 -3.7e19
6 W30N01
(482",66") 		W27-W34
(7) 		0.1 -0.8 -2.4e19
7 W08N22
(128",409") 		W07-W10
(3) 		0.1 -1.2 -2.5e19

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 5-May-2019 22:00 UT .