STAR MAP 8
Vulpecula, Delphinus, Equuleus
BRIGHTEST STARS
No. Star R.A. Dec. Mag. Spectrum Proper name
hm s ° ‘ “
3 · 18 36 56 38 47 01 0.03 A0 Vega
14 Á 18 58 56 32 41 22 3.24 B9 Sulaphat
10 ‚ 18 50 05 33 21 46 3.3 (max) B7 ShelikAlso above magnitude 4.3: Â(3.9) (combined magnitude); R (3.9, max).
VARIABLES
Star R.A. Dec. Range Type Period Spectrum
hm °’ (mags) (d)
‚ 18 50.1 33 22 3.3–4.3 ‚Lyrae 12.94 BA
R1 8 55.3 43 57 3.9–5.0 Semi-reg. 46 M
RR 19 25.5 42 47 7.1–8.1 RR Lyrae 0.57 AF
DOUBLES
Star R.A. Dec. P.A. Sep. Mags
hm °’ ° “
 18 44 39 40 ABCD 173 207.7 4.7, 5.1
Â^1 AB 357 2.8 5.0, 5.1 Quadruple star
Â^2 CD 094 2.3 5.2, 5.5
̇ 18 44.8 37 36 150 43.7 4.3, 5.9
‚ 18 50.1 33 22 149 45.7 var, 8.6
CLUSTERS AND NEBULAE
M NGC R.A. Dec. Mag. Dimensions Type
hm °’ ‘
56 6779 19 16.6 30 11 8.2 7.1 Globular
cluster
57 6720 18 53.6 33 02 9.7 70” 150” Planetary
nebula (Ring
Nebula)BRIGHTEST STARS
No. Star R.A. Dec. Mag. Spectrum Proper name
hm s ° ‘ “
50 · 20 41 26 45 16 49 1.25 A2 Deneb
37 Á 20 22 13 40 15 24 2.20 F8 Sadr
53 Â 20 46 12 33 58 13 2.46 K0 Gienah
18 ‰ 19 44 58 45 07 51 2.87 A0
6 ‚ 19 30 43 27 57 35 3.08 K5 Albireo
64 ̇ 21 12 56 30 13 37 3.20 G8Also above magnitude 4.3: Í(3.72); Ù(3.72), Î(3.77), È(3.79), Ô^1 (3.79), Ë(3.89), Ó(3.94),
Ô^2 (3.98), 41 (4.01), Ú(4.02), 52 (4.22), Û(4.23), ^2 (4.23). The curious variable P Cygni has
been known to reach magnitude 3, but is usually nearer 5. At some maxima the red Mira
variable ̄Cygni can reach magnitude 3.3, but most maxima are considerably fainter than this.
VARIABLES
Star R.A. Dec. Range Type Period Spectrum
hm °’(mags) (d)
̄ 19 50.6 32 55 3.3–14.2 Mira 407 S
P2 0 17.8 38 02 3–6 Recurrent – Pec.
nova
R1 9 36.8 50 12 5.9–14.2 Mira 426 M
U2 0 19.6 47 54 5.9–12.1 Mira 462 N
X2 0 43.4 35 35 5.9–6.9 Cepheid 16.4 F–G
W2 1 36.0 45 22 5.0–7.6 Semi-reg. 126 M
SS 21 42.7 43 35 8.4–12.4 SS Cyg (U Gem) 50 A–G
DOUBLES
Star R.A. Dec. P.A. Sep. Mags
hm ° ’ ° “
‚ 19 30.7 27 58 054 34.4 3.1, 5.1 Yellow, blue
‰ 19 45.0 45 07 225 2.4 2.9, 6.3 Binary, 828
years
61 21 06.9 38 45 148 29.9 5.2, 6.0
CLUSTERS AND NEBULAE
MCNGC R.A. Dec. Mag. Dimensions Type
hm °’ ’
29 6913 20 23.9 38 32 6.6 7 Open cluster
39 7092 21 32.2 48 26 4.6 32 Open cluster
20 7000 20 58.8 44 20 6.0 120 100 Nebula (North
America
Nebula)BRIGHTEST STARS
No. Star R.A. Dec. Mag. Spectrum Proper name
hm s ° ‘ “
53 · 19 50 47 08 52 06 0.77 A7 Altair
50 Á 19 46 15 10 36 48 2.72 K3 Tarazed
17 ̇ 19 05 24 13 51 48 2.99 B9 DhenebLYRACYGNUSAQUILANo. Star R.A. Dec. Mag. Spectrum Proper name
hm s ° ‘ “
65 ı 20 11 18 00 49 17 3.23 B9
30 ‰ 19 25 30 03 06 53 3.36 F0
16 Ï 19 06 15 04 52 57 3.44 B9 Althalimain
Also above magnitude 4.3: ‚( Alshain) (3.71), Â(4.02), 12 (4.02). The Cepheid variable Ërises
to 3.5 at maximum.
VARIABLES
Star R.A. Dec. Range Type Period Spectrum
hm °’ (mags) (d)
Ë 19 52.5 01 00 3.5–4.4 Cepheid 7.2 F–G
R1 9 06.4 08 14 5.5–12.0 Mira 284 MThe brightest star is ·: R.A. 18h 35m 12s.1, dec. 08° 14’ 39”, mag. 3.85.
Also above magnitude 4.3: ‚ (4.22).
VARIABLE
Star R.A. Dec. Range Type Period Spectrum
hm °’ (mags) (d)
R1 8 47.5 05 42 4.4–8.2 RV Tauri 140 G–K
CLUSTERS AND NEBULAE
M NGC R.A. Dec. Mag. Dimensions Type
hm °’ ’
11 6705 18 51.1 06 16 5.8 14 Open cluster
(Wild Duck)
26 6694 18 45.2 09 24 8.0 15 Open cluster
6664 18 36.7 08 13 7.8 16 Open cluster
(EV Scuti cl.)
6712 18 53.1 08 42 8.2 7 Globular
clusterThe only two stars above magnitude 4.3 are Áand ‰. The brightest, Á, lies at
R.A. 19h 58m 45s.3, dec. 19° 29’ 32”; magnitude 3.47. The magnitude of ‰is 3.82.
CLUSTERS AND NEBULAE
M NGC R.A. Dec. Mag. Dimensions Type
hm °’ ’
71 6838 19 53.8 18 47 8.3 7.2 Globular
clusterThe brightest star is ·: R.A. 19h 28m 42s.2, dec. 24° 39’ 24”, magnitude 4.44.
VARIABLES
Star R.A. Dec. Range Type Period Spectrum
hm °’ (mags) (d)
T2051.5 28 15 5.4–6.1 Cepheid 4.4 FG
Z1921.7 25 34 7.4–9.2 Algol 2.45 BA
DOUBLE
Star R.A. Dec. P.A. Sep. Mags
hm °’ ° “
·- 8 19 28.7 24 40 028 413.7 4.4, 5.8
CLUSTERS AND NEBULAE
M NGC R.A. Dec. Mag. Dimensions Type
hm °’ ’
27 6853 19 59.6 22 43 7.6 350” 910” Planetary
(Dumbbell)
6940 20 34.6 28 18 6.3 31 Open clusterThe brightest star is ‚: R.A. 20h 37m 32s.8, dec. 14° 35’ 43”, mag. 3.54. Also above magnitude
4.3: ·(3.77), Á(3.9 combined magnitude), Â(4.03).
VARIABLES
Star R.A. Dec. Range Type Period Spectrum
hm °’ (mags) (d)
U2045.5 18 05 5.6–8.9 Semi-regular 110 M
EU 20 37.9 18 16 5.8–6.9 Semi-regular 59 M
DOUBLE
Star R.A. Dec. P.A. Sep. Mags
hm ° ’ ° ”
Á 20 46.7 16 07 268 9.6 4.5,5.5
CLUSTERS AND NEBULAE
M C NGC R.A. Dec. Mag. Dimensions Type
hm ° ’ ’
47 6934 20 34.2 07 24 8.9 5.9 Globular
clusterThe only star above mag. 4.3 is ·(Kitalpha), R.A. 21h 15m 49s.3, dec. 05° 14’ 52”, mag. 3.92.
DOUBLE
Star R.A. Dec. P.A. Sep. Mags
hm °’ ° “
 20 59.1 04 18 AB 285 1.0 6.0, 6.3 Binary,101
years
ABC 070 10.7 7.1
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