29 July 2017
⇐20170728 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170730⇒

NOAA
1 Active Region
12668

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 -7
(298",-295") 		1.2e05
(4.2) 		5.8 -6.5 -7.6e33
2 -534
(-165",828") 		5.7e05
(4.0) 		6.7 -5.4 -3.1e34
3 -784
(-617",332") 		2.2e05
(3.8) 		8.1 -6.3 -1.4e34
4 -124
(155",-899") 		3.6e05
(0.8) 		5.2 -7.0 -2.5e34
5 515
(559",-378") 		5.7e03
(0.1) 		5.5 -6.8 -3.9e32
6 588
(628",-224") 		5.5e03
(0.1) 		5.5 -5.8 -3.2e32
7 417
(472",-504") 		3.9e03
(0.1) 		4.7 -5.7 -2.2e32

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 29-Jul-2017 23:30 UT .