24 January 2018
⇐20180123 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180125⇒

NOAA
1 Active Region
12696

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 W18S29
(261",-388") 		E13-W36
(49) 		5.6 -0.3 -4.8e32
2 E26S63
(-187",-832") 		E74-W73
(147) 		4.2 -0.9 -4.9e33
3 E29S15
(-453",-171") 		E44-E14
(30) 		3.1 -0.5 -4.4e32
4 W07N16
(114",351") 		E09-W15
(24) 		2.5 0.7 4.2e32
5 E18N58
(-157",874") 		E45-W19
(64) 		1.6 0.8 2.1e33
6 E15N32
(-209",591") 		E23-E08
(15) 		0.7 1.2 3.4e32
7 W44S32
(582",-456") 		W41-W46
(5) 		0.1 -2.4 -1.6e32
8 E23N27
(-339",522") 		E25-E21
(4) 		0.0 -0.7 -1.5e31
9 W56S70
(277",-894") 		W43-W61
(18) 		0.0 -3.2 -5.0e32

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 24-Jan-2018 20:30 UT .