28 October 2018
⇐20181027 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181029⇒

NOAA
Active Regions
No Data

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 W16N66
(108",848") 		E85-W58
(143) 		3.9 0.9 4.7e21
2 E01N00
(-24",-73") 		E12-W08
(20) 		1.7 -1.2 -3.3e20
3 E51S07
(-745",-172") 		E62-E42
(20) 		0.9 1.5 9.6e20
4 W05S70
(26",-932") 		E06-W18
(24) 		0.1 -1.9 -1.1e21
5 W18S25
(277",-478") 		W16-W21
(5) 		0.1 -1.0 -1.8e19
6 E02S19
(-28",-385") 		E03-W00
(3) 		0.0 -1.4 -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 some time.