24 February 2018
⇐20180223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180225⇒

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 W22S54
(209",-714") 		E80-W65
(145) 		11.4 -0.7 -5.5e33
2 -229
(868",W00N56") 		89
(3.1e05) 		0.8 6.0 1.9e34
3 E54N28
(-692",520") 		E62-E43
(19) 		0.7 0.6 5.8e32
4 E34N44
(-392",740") 		E54-E21
(33) 		0.6 0.6 4.2e32
5 W50S11
(732",-111") 		W43-W58
(15) 		0.3 -0.4 -7.7e31
6 W43N03
(657",146") 		W40-W45
(5) 		0.1 -0.8 -3.3e31
7 E34S27
(-483",-355") 		E37-E31
(6) 		0.1 -0.9 -1.9e31

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 24-Feb-2018 20:35 UT .