15 May 2019
⇐20190514 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190516⇒

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 E30S63
(-210",-832") 		E46-W74
(120) 		3.1 -0.8 -3.9e21
2 W20N61
(162",848") 		E57-W43
(100) 		2.7 1.0 4.5e21
3 E32S19
(-480",-271") 		E47-E21
(26) 		2.1 -0.4 -3.4e20
4 E24N23
(-353",408") 		E39-E10
(29) 		1.5 0.3 1.6e20
5 E13S35
(-169",-514") 		E21-E04
(17) 		0.3 -1.2 -1.2e20
6 E56S35
(-640",-528") 		E58-E52
(6) 		0.1 -2.2 -1.4e20
7 W25S22
(372",-315") 		W22-W27
(5) 		0.0 -1.1 -1.5e19
8 E44S10
(-649",-134") 		E46-E41
(5) 		0.0 -0.7 -1.5e19

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-May-2019 22:00 UT .