13 May 2019
⇐20190512 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190514⇒

NOAA
2 Active Regions
12740
12741

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 E05N58
(-42",832") 		E56-W24
(80) 		3.4 0.9 3.9e21
2 W28S70
(156",-876") 		E52-W58
(110) 		1.9 -1.0 -4.6e21
3 W18S09
(292",-111") 		W13-W23
(10) 		0.5 1.2 1.3e20
4 E36S37
(-448",-538") 		E45-E32
(13) 		0.2 -0.5 -6.0e19

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 13-May-2019 22:00 UT .