28 July 2020
⇐20200727 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200729⇒

NOAA
1 Active Region
12767

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 E12N26
(-176",328") 		E45-W50
(95) 		17.0 0.3 8.6e20
2 E04N67
(-27",832") 		107
(1.3e05) 		1.0 4.6 6.0e21
3 W31S58
(261",-837") 		E10-W33
(43) 		1.3 -0.8 -4.0e20
4 W43N35
(531",486") 		W33-W51
(18) 		0.4 0.7 6.8e19
5 W28S32
(370",-568") 		W22-W34
(12) 		0.4 -1.3 -9.9e19
6 E22S09
(-345",-229") 		E25-E18
(7) 		0.1 -0.7 -1.3e19
7 W51S03
(733",-112") 		W47-W55
(8) 		0.1 -0.7 -1.6e19
8 E41S07
(-622",-181") 		E44-E39
(5) 		0.1 -0.7 -9.1e18

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 28-Jul-2020 19:00 UT .