13 April 2021
⇐20210412 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210414⇒

NOAA
1 Active Region
12814

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 E34S53
(-328",-711") 		E49-W46
(95) 		7.3 -1.3 -2.5e21
2 W13S12
(205",-103") 		E01-W22
(23) 		1.3 -2.3 -4.8e20
3 E12S25
(-187",-319") 		E14-E10
(4) 		0.1 -1.6 -1.6e19
4 W23S12
(360",-116") 		W21-W24
(3) 		0.0 -3.3 -2.0e19

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-Apr-2021 23:30 UT .