5 August 2021
⇐20210804 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210806⇒

NOAA
1 Active Region
12850

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 E18S05
(-295",-186") 		E42-W18
(60) 		9.0 -0.6 -8.4e20
2 E04N64
(-27",801") 		E57-W63
(120) 		5.0 0.8 1.2e21
3 W32S15
(484",-323") 		W16-W46
(30) 		3.0 -0.4 -2.4e20
4 E43S42
(-480",-684") 		E59-E31
(28) 		0.7 -1.1 -2.5e20
5 W38N28
(512",369") 		W35-W43
(8) 		0.3 2.8 2.0e20
6 E46S33
(-566",-576") 		E51-E43
(8) 		0.1 -0.8 -3.1e19
7 W44S18
(630",-363") 		W42-W46
(4) 		0.1 -2.0 -2.6e19

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 5-Aug-2021 23:30 UT .