9 December 2021
⇐20211208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211210⇒

NOAA
3 Active Regions
12901
12903
12904

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 E27S02
(-444",-36") 		E45-W08
(53) 		4.4 -0.2 -1.2e20
2 E21N65
(-150",884") 		E57-W49
(106) 		1.9 0.8 5.9e20
3 E47S35
(-578",-562") 		E64-E32
(32) 		0.8 -1.2 -2.5e20
4 E27S20
(-422",-326") 		E31-E24
(7) 		0.2 -0.9 -2.5e19
5 W22S74
(96",-938") 		W07-W35
(28) 		0.1 -0.5 -3.9e19
6 E27N19
(-414",328") 		E29-E24
(5) 		0.1 -0.6 -1.0e19
7 E26N43
(-316",664") 		E31-E21
(10) 		0.1 -1.1 -1.6e19

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 9-Dec-2021 20:30 UT .