1 October 2019
⇐20190930 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191002⇒

NOAA
0 Active Regions

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 E04N68
(-25",842") 		E63-W88
(151) 		4.5 1.2 1.6e21
2 W22S29
(316",-548") 		E03-W33
(36) 		3.8 -0.6 -4.4e20
3 W05S17
(72",-390") 		E13-W19
(32) 		3.3 -0.6 -3.2e20
4 E03N18
(-46",192") 		26
(2.8e04) 		0.1 3.5 9.8e20
5 W26S60
(211",-877") 		W09-W40
(31) 		0.5 -0.7 -1.7e20
6 E14S67
(-90",-920") 		E30-W22
(52) 		0.4 -0.9 -1.9e20
7 W37S32
(490",-586") 		W36-W42
(6) 		0.4 -0.7 -6.2e19
8 W26N35
(344",465") 		W23-W29
(6) 		0.1 -0.6 -9.0e18
9 E23N03
(-369",-58") 		E25-E19
(6) 		0.1 -0.8 -9.9e18
10 E13N19
(-208",205") 		E14-E11
(3) 		0.1 -1.1 -8.6e18

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 1-Oct-2019 23:40 UT .