30 July 2020
⇐20200729 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200731⇒

NOAA
2 Active Regions
12767
12768

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 W05N43
(55",574") 		E28-W31
(59) 		18.0 0.5 1.6e21
2 E02S21
(-28",-421") 		E05-W03
(8) 		0.2 -0.8 -2.6e19
3 E23N01
(-372",-68") 		E26-E21
(5) 		0.1 -1.1 -1.7e19
4 W64N53
(511",726") 		W54-W73
(19) 		0.1 0.8 2.2e19
5 E56S04
(-780",-114") 		E58-E54
(4) 		0.0 -0.6 -8.5e18
6 W05S39
(67",-663") 		W03-W07
(4) 		0.0 -1.5 -1.4e19
7 W26N36
(338",480") 		W24-W29
(5) 		0.0 -0.5 -4.0e18

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 30-Jul-2020 19:00 UT .