12 March 2019
⇐20190311 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190313⇒

NOAA
1 Active Region
12734

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 W15S54
(149",-708") 		116
(5.3e05) 		-0.7 5.3 2.8e22
2 W21S04
(345",49") 		W01-W41
(40) 		4.0 -0.7 -6.7e20
3 E39N58
(-322",865") 		E58-E15
(43) 		0.8 0.4 1.3e21
4 W41S45
(454",-610") 		W36-W45
(9) 		0.1 -1.1 -1.1e20
5 W45S07
(684",-38") 		W42-W49
(7) 		0.1 -0.7 -3.3e19
6 E03N07
(-42",236") 		E04-W01
(5) 		0.1 -0.9 -1.5e19
7 W00S14
(4",-122") 		E01-W01
(2) 		0.0 -1.3 -1.1e19

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 12-Mar-2019 20:30 UT .