Observation 12.04.2014 · Istanbul University Observatory Solar Observations

Daily Sunspot Evaluation

Observation Details Saturday, 12 April 2014

No: 17108
Date: 2014 / 04 / 12,483
Time: 11:35 UT
Seeing: 4 / 5
Number of groups (g): 5
Number of spots (f): 28
Relative number (R): 78
L_f: 0
P₀: -26.16°
B₀: -5.82°
L₀: 292.35°
Observer: Başar COŞKUNOĞLU

Remarks: Bulutlar Arasında

12.04.2014 photosphere drawing

Sunspot groups

No	Group (class – spots)	B	Δ L	L	Δ L_f	U	NOAA
1	DSI – 10	-17	69.8E	222	69.8E	11.7
2	DAI – 13	4	50.8E	241	50.8E	9.7
3	CSO – 2	13	26.5E	266	26.5E	6.4
4	HS_ – 2	12	16.6E	275	16.6E	2.7
5	AX_ – 1	-12	70.2E	222	70.2E	-

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