15 April 2019
⇐20190414 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190416⇒

NOAA
1 Active Region
12738

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 W03N52
(33",806") 		E52-W53
(105) 		5.3 0.6 2.9e21
2 W27S71
(138",-876") 		E61-W68
(129) 		2.0 -1.1 -4.7e21
3 E63S27
(-759",-388") 		E69-E57
(12) 		0.1 -1.0 -1.1e20
4 W06S40
(80",-546") 		W03-W09
(6) 		0.1 -1.1 -2.6e19
5 E58S65
(-349",-839") 		E65-E51
(14) 		0.1 -2.1 -4.4e20
6 E24S16
(-379",-175") 		E27-E22
(5) 		0.1 -0.9 -1.5e19
7 E39S31
(-517",-428") 		E41-E36
(5) 		0.1 -0.8 -2.4e19

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 15-Apr-2019 22:00 UT .