28 November 2018
⇐20181127 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181129⇒

NOAA
1 Active Region
12728

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 E10S03
(-172",-70") 		E38-W25
(63) 		10.9 0.8 1.6e21
2 E41N64
(-273",871") 		E68-E19
(49) 		0.9 0.8 1.8e21
3 W28N71
(147",915") 		E41-W63
(104) 		0.7 1.4 3.5e21
4 E21N37
(-279",577") 		E28-E13
(15) 		0.5 0.7 1.5e20
5 W37S71
(195",-923") 		W29-W49
(20) 		0.2 -0.9 -9.9e20
6 E31N42
(-371",639") 		E36-E26
(10) 		0.1 -0.6 -5.3e19
7 E36N24
(-528",382") 		E38-E34
(4) 		0.0 -0.9 -1.8e19
8 E39S11
(-604",-193") 		E41-E38
(3) 		0.0 -0.6 -8.8e18

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-Nov-2018 20:30 UT .