25 June 2018
⇐20180624 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180626⇒

NOAA
2 Active Regions
12715
12713

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 W08S42
(99",-663") 		E40-W41
(81) 		11.0 -0.5 -2.6e21
2 E50N52
(-442",732") 		E73-E39
(34) 		0.4 1.1 6.6e20
3 W36S45
(398",-687") 		W33-W46
(13) 		0.3 -0.7 -2.3e20
4 E34S26
(-480",-448") 		E37-E32
(5) 		0.1 -1.2 -4.8e19

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 25-Jun-2018 19:30 UT .