25 February 2018
⇐20180224 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180226⇒

NOAA
0 Active Regions

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 W17S65
(123",-825") 		E87-W53
(140) 		5.5 -1.1 -6.3e33
2 E33N50
(-342",800") 		E59-W43
(102) 		4.2 0.6 4.1e33
3 W35S07
(555",-15") 		W30-W40
(10) 		0.6 -0.7 -1.4e32
4 W42S18
(624",-210") 		W37-W49
(12) 		0.6 -0.7 -1.9e32
5 E16N42
(-204",730") 		E23-E09
(14) 		0.5 0.5 1.6e32
6 E25S24
(-377",-292") 		E29-E21
(8) 		0.1 -0.7 -3.1e31

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 25-Feb-2018 20:30 UT .