30 May 2017
⇐20170529 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170531⇒

NOAA
1 Active Region
12659

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 -405
(73",-820") 		5.7e05
(4.8) 		5.8 -7.1 -4.1e34
2 -416
(306",-455") 		2.4
(-0.2) 		-6.7 263.2
3 -349
(-27",868") 		3.9e05
(2.1) 		6.0 -5.8 -2.2e34
4 -42
(137",-19") 		2.6e04
(1.5) 		6.6 -5.3 -1.4e33
5 -373
(-283",-80") 		9.1e03
(0.4) 		5.0 -8.7 -7.9e32
6 -537
(-477",-117") 		6.4e03
(0.2) 		5.4 -8.1 -5.1e32
7 118
(162",668") 		3.3e03
(0.1) 		5.6 -5.8 -1.9e32

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 30-May-2017 23:30 UT .