1 March 2019
⇐20190228 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190302⇒

NOAA
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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 W09S16
(149",-154") 		E46-W74
(120) 		21.3 -0.2 -1.0e21
2 W10S69
(57",-858") 		E68-W70
(138) 		3.7 -1.4 -6.9e21
3 E21N29
(-303",560") 		E25-E17
(8) 		0.1 -0.6 -2.6e19
4 E34N12
(-530",303") 		E37-E32
(5) 		0.1 -0.9 -2.3e19

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 1-Mar-2019 20:30 UT .