17 March 2020
⇐20200316 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200318⇒

NOAA
1 Active Region
12758

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 E09S64
(-63",-809") 		E52-W86
(138) 		6.1 -1.2 -7.2e21
2 W06N34
(77",631") 		9
(9.1e03) 		-0.5 4.7 4.3e20
3 531
(564",W36S06") 		6
(3.5e03) 		-0.6 4.8 1.7e20
4 W20S02
(327",79") 		W17-W22
(5) 		0.1 -1.0 -1.8e19

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 17-Mar-2020 20:30 UT .