The Summer Triangle: Lyra, Cygnus, and Aquila

Double stars:
 

Star	Colour	Magnitude	Separation	Position Angle
e Epsilon Lyrae Double Double	white white white white	5.0 6.1 5.2 5.5	208" 2.6" 2.3"	357° 173° 94°
z Zeta Lyrae	yellow yellow	4.3 5.9	44"	150°
d Delta Lyrae		4.5 5.6	630"	295°
b Beta Lyrae	white white	3.4 8.6	46"	149°
o Omicron Cygni		3.8 4.8 6.7	107" 338"	173° 323°
b Beta Cygni Albireo	yellow blue	3.1 5.1	34"	54°
16 Cygni		6.0 6.2	40"	133°
61 Cygni	orange orange	5.2 6.0	28"	146°
g Gamma Delphinus	yellow green	4.5 5.5	10"	268°

Variables:
 

Name	Type	Range	Per	Charts
R Sct	RV Tau	4.8—8.5	146d	http://www.aavso.org/charts/SCT/R_SCT/RSCT-A.GIF http://www.aavso.org/charts/SCT/R_SCT/RSCT-B.GIF
cChi Cyg	Mira	5.2-13.4	408d	http://www.aavso.org/charts/CYG/CHI_CYG/CHICYG-A.GIF http://www.aavso.org/charts/CYG/CHI_CYG/CHICYG-B.GIF http://www.aavso.org/charts/CYG/CHI_CYG/CHICYG-D.GIF http://www.aavso.org/charts/CYG/CHI_CYG/CHICYG-E.GIF
U Cyg	Mira	7.2-10.7	463d	http://www.aavso.org/charts/CYG/U_CYG/UCYG-A.GIF http://www.aavso.org/charts/CYG/U_CYG/UCYG-B.GIF http://www.aavso.org/charts/CYG/U_CYG/UCYG-C.GIF http://www.aavso.org/charts/CYG/U_CYG/UCYG-D.GIF
SS Cyg	U Gem	8.2—12.3	49.5d	http://www.aavso.org/charts/CYG/SS_CYG/SSCYG-B.GIF http://www.aavso.org/charts/CYG/SS_CYG/SSCYG-C.GIF http://www.aavso.org/charts/CYG/SS_CYG/SSCYG-D.GIF http://www.aavso.org/charts/CYG/SS_CYG/SSCYG-E.GIF

Deep sky objects:
 

Object	NSOG	Type	Magnitude	Surface brightness
Lyr: M 57 Ring nebula	*****	PlanNeb	9.4	9.3
Cyg: NGC 6826 Blinking neb	*****	PlanNeb	8.8	6.9
Cyg: Messier 29	*****	OpenClust	6.6	--
Cyg: NGC 6960/72 Veil neb	****	SNrem	--	--
Cyg: Messier 39	*****	OpenClust	4.6	--
Vul: M 27 Dumbbell nebula	***(**)	PlanNeb	7.3	11.2
Vul: Cr399 Coathanger	****	Asterism	3.6	--
Sct: M 11 Wild Duck cluster	*****	OpenClust	5.8	--

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