24 March 2017
⇐20170323 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170325⇒

NOAA
1 Active Region
12643

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 E28S32
(-387",-421") 		E82-E02
(80) 		9.5 -1.7 -6.0e33
2 W59S15
(793",-196") 		W45-W66
(21) 		1.9 1.3 2.5e33
3 E62S62
(-399",-819") 		E80-E50
(30) 		0.7 -0.6 -1.1e33

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 24-Mar-2017 20:30 UT .