Observation 20.05.2016 · Istanbul University Observatory Solar Observations

Daily Sunspot Evaluation

Observation Details Friday, 20 May 2016

No: 17755
Date: 2016 / 05 / 20,351
Time: 08:25 UT
Seeing: 5 / 5
Number of groups (g): 3
Number of spots (f): 65
Relative number (R): 95
L_f: 2
P₀: -19.28°
B₀: -2.02°
L₀: 223.56°
Observer: Özgecan ÖNALTAŞ

20.05.2016 photosphere drawing

Sunspot groups

No	Group (class – spots)	B	Δ L	L	Δ L_f	U	NOAA
1	HS_ – 1	21	70W	293	72W	2.2
2	BXI – 7	-19	32W	255	34W	5.0
3	EHI – 57	-9	07E	217	05E	14.0

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