4 April 2019
⇐20190403 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190405⇒

NOAA
1 Active Region
12737

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 E01S68
(-6",-844") 		E62-W58
(120) 		4.2 -1.2 -6.6e21
2 W40S20
(582",-254") 		W24-W54
(30) 		3.2 -0.4 -5.7e20
3 W16S26
(240",-334") 		E03-W25
(28) 		2.0 -0.6 -2.9e20
4 E15S36
(-198",-484") 		E26-W03
(29) 		1.7 -0.3 -2.0e20
5 E29S06
(-470",-4") 		E35-E22
(13) 		0.6 -1.1 -1.8e20
6 W59S48
(552",-669") 		W55-W62
(7) 		0.1 -1.4 -1.9e20

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 4-Apr-2019 19:30 UT .