27 February 2018
⇐20180226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180228⇒

NOAA
1 Active Region
12700

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 E12N46
(-138",771") 		E51-W42
(93) 		7.8 0.6 3.7e33
2 E03S69
(-16",-858") 		E71-W64
(135) 		4.0 -1.3 -7.1e33

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 27-Feb-2018 20:30 UT .