8 May 2018
⇐20180507 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180509⇒

NOAA
1 Active Region
12708

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 W38N16
(568",297") 		E08-W82
(90) 		7.8 -0.6 -2.1e33
2 W35N60
(268",847") 		E20-W75
(95) 		2.2 1.0 5.4e33
3 W42S74
(172",-901") 		E04-W50
(54) 		0.5 -0.8 -1.7e33
4 E29S76
(-109",-910") 		E48-E03
(45) 		0.3 -1.3 -1.5e33
5 E07N28
(-101",492") 		E12-E02
(10) 		0.2 -0.9 -6.8e31
6 W42N21
(597",378") 		W39-W46
(7) 		0.1 -0.7 -5.4e31
7 W19N33
(255",567") 		W15-W21
(6) 		0.1 -0.8 -3.6e31

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 8-May-2018 15:30 UT .