31 March 2018
⇐20180330 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180401⇒

NOAA
1 Active Region
12703

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 E09N49
(-100",788") 		E59-W44
(103) 		7.7 0.6 4.3e33
2 W11S65
(75",-816") 		E82-W85
(167) 		4.5 -0.5 -2.2e33
3 W11S18
(174",-198") 		E09-W26
(35) 		4.1 -0.2 -1.7e32
4 W05N22
(73",462") 		E05-W09
(14) 		0.6 1.6 2.5e32
5 W55N46
(547",729") 		W48-W66
(18) 		0.3 0.8 7.5e32
6 W32S17
(484",-182") 		W27-W37
(10) 		0.3 -1.2 -1.1e32

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 31-Mar-2018 23:30 UT .