23 January 2019
⇐20190122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190124⇒

NOAA
1 Active Region
12733

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 W37N22
(543",425") 		W03-W59
(56) 		4.5 0.6 1.4e21
2 E08S72
(-38",-900") 		E84-W84
(168) 		2.1 -1.3 -5.4e21
3 E11N61
(-87",894") 		E59-W53
(112) 		2.0 0.7 2.9e21
4 W24S13
(392",-144") 		W14-W34
(20) 		1.4 0.5 1.9e20
5 E57S14
(-798",-190") 		E67-E49
(18) 		0.4 -0.6 -2.6e20
6 E13S46
(-148",-634") 		E17-E07
(10) 		0.1 -1.1 -6.4e19
7 W09N09
(154",242") 		W07-W11
(4) 		0.0 -1.9 -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 23-Jan-2019 20:30 UT .