13 February 2021
⇐20210212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210214⇒

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 W07N30
(109",583") 		E41-W40
(81) 		9.6 0.4 6.9e20
2 W17S62
(138",-798") 		E75-W43
(118) 		5.8 -1.1 -1.7e21
3 E14N64
(-102",916") 		E28-W12
(40) 		0.6 0.7 1.8e20
4 E29N04
(-467",171") 		E30-E27
(3) 		0.0 -1.0 -7.5e18
5 E67S29
(-783",-426") 		E70-E63
(7) 		0.0 -2.4 -3.4e19
6 W39S23
(559",-292") 		W36-W41
(5) 		0.0 -4.4 -3.2e19

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 13-Feb-2021 20:30 UT .