16 February 2018
⇐20180215 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180217⇒

NOAA
1 Active Region
12699

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 W29N16
(449",363") 		E03-W57
(60) 		5.7 -1.1 -2.4e33
2 E30S31
(-417",-405") 		E54-W13
(67) 		3.3 -0.9 -1.2e33
3 E36N16
(-544",364") 		E50-E17
(33) 		1.3 0.5 3.0e32
4 E62S70
(-291",-888") 		E58-W01
(59) 		0.9 -1.1 -4.1e33

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 16-Feb-2018 20:30 UT .