28 January 2019
⇐20190127 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190129⇒

NOAA
1 Active Region
12733

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 E14S19
(-228",-227") 		E56-W33
(89) 		16.5 -0.5 -1.8e21
2 W09S70
(49",-881") 		E65-W85
(150) 		2.6 -1.3 -5.6e21
3 E46N09
(-689",223") 		E69-E30
(39) 		1.8 -0.5 -5.8e20
4 W25N61
(201",888") 		E08-W63
(71) 		1.2 0.6 1.7e21
5 W06S41
(73",-568") 		W04-W07
(3) 		0.1 -1.9 -3.7e19
6 W18S35
(244",-487") 		W16-W20
(4) 		0.0 -1.4 -1.8e19
7 W32S56
(294",-758") 		W29-W36
(7) 		0.0 -2.0 -6.4e19

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-Jan-2019 20:30 UT .