21 November 2020
⇐20201120 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201122⇒

NOAA
2 Active Regions
12783
12782

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 W13N52
(129",748") 		E53-W43
(96) 		10.1 0.8 2.1e21
2 W15N05
(258",48") 		E02-W25
(27) 		1.5 0.4 9.1e19
3 W10S69
(63",-916") 		E43-W52
(95) 		1.0 -0.7 -3.3e20
4 E13N28
(-192",433") 		E19-E07
(12) 		0.4 2.4 1.6e20
5 W45N20
(651",309") 		W39-W51
(12) 		0.4 -0.6 -5.2e19
6 W41N13
(625",191") 		W34-W48
(14) 		0.2 0.5 2.5e19
7 W46N03
(699",32") 		W42-W49
(7) 		0.1 -0.8 -1.7e19
8 W31S38
(402",-616") 		W30-W33
(3) 		0.1 -1.2 -1.4e19
9 W34S13
(529",-248") 		W32-W36
(4) 		0.0 -2.0 -1.6e19
10 W07N43
(81",637") 		W05-W09
(4) 		0.0 -1.0 -8.1e18

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 21-Nov-2020 20:30 UT .