2 August 2018
⇐20180801 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180803⇒

NOAA
1 Active Region
12717

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 E04N67
(-27",829") 		159
(5.5e05) 		0.9 5.8 3.2e22
2 E14N25
(-205",312") 		E27-W07
(34) 		2.8 0.4 3.1e20
3 W24N05
(379",-3") 		W17-W29
(12) 		0.5 -1.0 -1.3e20
4 W44S16
(631",-326") 		W33-W53
(20) 		0.5 -0.7 -2.0e20
5 W29S22
(423",-426") 		W23-W32
(9) 		0.1 -0.7 -4.4e19
6 W27S69
(151",-911") 		W21-W45
(24) 		0.1 -1.9 -1.4e21
7 W40S29
(528",-526") 		W37-W42
(5) 		0.0 -1.3 -4.3e19

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 2-Aug-2018 23:10 UT .