5 October 2019
⇐20191004 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191006⇒

NOAA
1 Active Region
12749

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 W13N70
(73",858") 		E72-W90
(162) 		3.5 1.1 1.4e21
2 W07N20
(114",229") 		E04-W16
(20) 		1.6 0.1 2.4e19
3 W31S31
(424",-571") 		W22-W36
(14) 		0.5 -1.3 -1.5e20
4 -149
(-908",W00S65") 		47
(2.4e04) 		-0.6 3.2 7.7e20
5 W41N47
(426",642") 		W34-W49
(15) 		0.2 0.8 4.3e19
6 W03S22
(48",-461") 		W00-W05
(5) 		0.1 1.3 2.5e19
7 W50N16
(705",195") 		W46-W53
(7) 		0.1 -0.9 -1.4e19

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 5-Oct-2019 23:40 UT .