6 March 2019
⇐20190305 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190307⇒

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 W31S19
(471",-221") 		W11-W55
(44) 		3.5 -0.3 -3.8e20
2 W13S71
(69",-873") 		E86-W71
(157) 		3.0 -1.4 -6.7e21
3 W09S35
(123",-451") 		W06-W11
(5) 		0.1 -1.4 -2.6e19
4 W50S12
(721",-127") 		W47-W53
(6) 		0.1 -0.6 -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 6-Mar-2019 20:30 UT .