25 May 2018
⇐20180524 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180526⇒

NOAA
3 Active Regions
12710
12711
12712

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 W10N51
(99",751") 		E52-W36
(88) 		7.1 0.6 3.2e21
2 E02S64
(-18",-841") 		E61-W61
(122) 		4.0 -1.0 -5.5e21
3 E57S10
(-786",-156") 		E73-E46
(27) 		1.2 -1.5 -1.8e21
4 E43S35
(-529",-534") 		E47-E35
(12) 		0.5 -0.8 -2.9e20
5 E44S04
(-658",-50") 		E47-E41
(6) 		0.1 -0.8 -3.2e19

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 25-May-2018 15:59 UT .