23 October 2018
⇐20181022 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181024⇒

NOAA
2 Active Regions
12724
12725

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 W25S15
(400",-328") 		E06-W49
(55) 		6.6 -0.1 -2.5e20
2 W27N68
(169",859") 		E72-W70
(142) 		3.3 1.1 5.7e21
3 W31N16
(486",186") 		W18-W43
(25) 		1.6 -0.2 -1.2e20
4 W29S71
(154",-932") 		E04-W36
(40) 		0.2 -1.2 -2.0e21
5 E11N04
(-189",-16") 		E13-E09
(4) 		0.1 -0.9 -1.7e19
6 E23N48
(-251",661") 		E28-E17
(11) 		0.1 -0.8 -3.8e19
7 E28N15
(-433",180") 		E31-E25
(6) 		0.1 -0.7 -1.2e19
8 W31N01
(505",-50") 		W30-W33
(3) 		0.1 -4.1 -7.4e19

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-Oct-2018 07:10 UT .