1 July 2021
⇐20210630 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210702⇒

NOAA
3 Active Regions
12835
12836
12837

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 W10N09
(163",93") 		E16-W36
(52) 		5.6 -0.3 -2.6e20
2 E41N65
(-263",839") 		E81-E07
(74) 		1.1 1.1 5.0e20
3 W53N67
(295",855") 		W30-W75
(45) 		0.7 0.5 2.2e20
4 E25N50
(-253",695") 		E26-E22
(4) 		0.1 -0.5 -6.7e18

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 1-Jul-2021 23:30 UT .