15 September 2018
⇐20180914 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180916⇒

NOAA
1 Active Region
12722

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 W22S17
(340",-387") 		E06-W39
(45) 		6.0 -1.0 -2.1e21
2 E45N43
(-497",585") 		E61-E23
(38) 		1.8 0.9 1.2e21
3 W57N69
(291",858") 		E107-W76
(183) 		1.5 0.9 4.4e21
4 E28S59
(-235",-865") 		E58-W03
(61) 		1.2 -0.5 -1.4e21
5 W29S27
(408",-524") 		W19-W35
(16) 		0.9 -0.5 -2.1e20
6 W19N19
(295",196") 		W16-W23
(7) 		0.2 -2.9 -1.3e20
7 E23S26
(-341",-516") 		E26-E20
(6) 		0.1 -1.2 -5.3e19
8 E04S52
(-43",-819") 		6
(9.0e03) 		-0.6 5.3 4.8e20
9 E07S10
(-114",-288") 		E09-E05
(4) 		0.1 -1.2 -1.7e19

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 15-Sep-2018 23:10 UT .