21 September 2016
⇐20160920 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160922⇒

NOAA
4 Active Regions
12593
12595
12592
12594

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 E37N64
(-250",816") 		E69-W93
(162) 		4.8 0.5 3.7e33
2 W47S11
(687",-253") 		W33-W65
(32) 		2.4 -0.9 -1.4e33
3 W23S65
(157",-907") 		E16-W56
(72) 		0.7 -1.4 -4.1e33
4 E26S04
(-414",-179") 		E30-E21
(9) 		0.4 1.5 1.8e32
5 E63N23
(-786",321") 		E74-E59
(15) 		0.1 3.0 4.0e32
6 W32N11
(492",88") 		W30-W33
(3) 		0.0 -5.2 -7.0e31

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 21-Sep-2016 20:30 UT .