18 June 2021
⇐20210617 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210619⇒

NOAA
1 Active Region
12833

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 E22N59
(-182",802") 		E54-W54
(108) 		3.1 0.9 8.5e20
2 E16S07
(-253",-144") 		E26-W02
(28) 		2.1 0.1 2.4e19
3 W45S69
(234",-889") 		W16-W65
(49) 		0.4 -0.5 -1.3e20
4 W16N02
(261",8") 		W12-W19
(7) 		0.2 1.2 3.6e19
5 E26S13
(-405",-230") 		E28-E24
(4) 		0.1 0.8 7.6e18

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 18-Jun-2021 23:30 UT .