16 May 2021
⇐20210515 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210517⇒

NOAA
2 Active Regions
12822
12823

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 W15S41
(187",-600") 		E45-W47
(92) 		23.6 -0.6 -2.6e21
2 W06N27
(82",472") 		E03-W11
(14) 		0.6 -0.9 -8.9e19
3 E10N16
(-159",299") 		E13-E05
(8) 		0.1 1.1 1.2e19
4 E42N11
(-629",202") 		E45-E39
(6) 		0.0 0.6 6.3e18
5 E48N11
(-692",213") 		E50-E45
(5) 		0.0 -0.4 -3.4e18

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 16-May-2021 23:30 UT .