16 April 2021
⇐20210415 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210417⇒

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 W05S54
(51",-717") 		E50-W55
(105) 		11.6 -1.3 -3.4e21
2 E39S13
(-586",-148") 		E55-E20
(35) 		1.7 -0.6 -2.0e20
3 W39N04
(598",142") 		W35-W42
(7) 		0.1 -0.7 -2.0e19
4 W50N20
(693",385") 		W45-W56
(11) 		0.1 -0.6 -1.5e19
5 W29N14
(453",300") 		W26-W32
(6) 		0.1 -0.7 -7.9e18
6 E50S23
(-677",-312") 		E52-E48
(4) 		0.0 -0.5 -5.8e18
7 W19N73
(92",935") 		W15-W28
(13) 		0.0 1.3 4.3e19

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 16-Apr-2021 23:30 UT .