28 May 2017
⇐20170527 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170529⇒

NOAA
3 Active Regions
12659
12656
12660

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 -442
(-95",-806") 		5.8e05
(5.4) 		5.8 -6.5 -3.8e34
2 44
(221",-183") 		5.8e04
(2.7) 		5.7 -5.6 -3.3e33
3 -455
(25",872") 		4.7e05
(2.4) 		6.0 -5.7 -2.7e34
4 148
(292",369") 		4.5e04
(1.5) 		7.1 -6.1 -2.8e33
5 -464
(-357",11") 		1.9e04
(0.8) 		7.8 -5.1 -9.6e32
6 -513
(-480",-715") 		1.2e04
(0.1) 		6.3 -6.9 -8.2e32
7 -574
(-581",-37") 		0.0
(-1.0) 		-5.5 29.8

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 28-May-2017 23:30 UT .