3 February 2018
⇐20180202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180204⇒

NOAA
2 Active Regions
12698
12697

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 E04N48
(-46",790") 		E38-W50
(88) 		6.9 0.8 4.7e33
2 E01S69
(-7",-868") 		E60-W87
(147) 		3.7 -1.2 -6.0e33

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 3-Feb-2018 20:30 UT .