28 October 2020
⇐20201027 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201029⇒

NOAA
1 Active Region
12778

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 W34N70
(187",880") 		E74-W87
(161) 		2.5 1.1 1.1e21
2 E22S24
(-331",-456") 		E38-E01
(37) 		2.0 0.0 1.1e19
3 E27N04
(-433",-2") 		E40-E17
(23) 		1.7 -0.1 -2.0e19
4 E35S65
(-232",-900") 		E47-W49
(96) 		0.8 -0.6 -2.7e20
5 E04S14
(-64",-307") 		E07-E00
(7) 		0.1 -1.1 -2.4e19
6 E62S07
(-845",-154") 		E64-E58
(6) 		0.1 -0.2 -4.9e18
7 E59S39
(-639",-642") 		E63-E57
(6) 		0.1 -0.4 -1.0e19

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-Oct-2020 20:30 UT .