22 Vulpeculae — Variable Star in Vulpecula
Good (51/100)
Observe
1Physical Properties
Magnitude
5.15
Spectral Type
G3Ib-II
supergiant
Star Color
Orange
(B-V 1.04)
Distance
815 ly
2Position & Identifiers
RA
20h 15m 30.2s
Dec
+23° 30' 31.0"
Constellation
Vulpecula
(Vul)
HR
7741
HIP
99853
HD
192713
SAO
88416
Flamsteed
22 Vul
Variable ID
QS Vul
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3How easy to follow?
Period
249.1 d
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Hard+ | Hard |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Jun – Aug
(peak: Jul)
5Survey Image
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6Comparison Stars for 22 Vul
Nearby stable stars for estimating brightness (AAVSO)
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Explore
7
Size Comparison
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8
Compare Stars
9
Spectral Classification
10
Hertzsprung-Russell Diagram
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11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
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15Stellar Notes
E, amp. 0.367U, 0.142B, 0.052V, 0.031R, 0.010I, 249.099d; duration of primary eclipse <17d.
251.0d, K 26.8k/s, V0 -23.7k/s, asini 92.4. Secondary B9, revised period 249.099d, a1sini 93.
16
Light Travel Time Machine
17
Relativistic Travel
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
C37
NGC 6885
Open cluster
Open Cluster
mag 6.0
3.1°
Vulpecula
M27
Dumbbell Nebula
Planetary nebula — try an OIII filter
Planetary Nebula
mag 7.4
3.7°
Vulpecula
EU Del
Semi-regular variable, range 5.8–6.9
Variable Star
mag 6.25
7.4°
Delphinus
10 Sge
Pulsating variable, period 8.4d
Variable Star
mag 5.36
8.3°
Sagitta
U Del
Semi-regular variable, range 6.1–7.6
Variable Star
mag 6.38
8.9°
Delphinus
SU Cyg
Pulsating variable, period 3.8d
Variable Star
mag 6.82
9.0°
Cygnus
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Article
Vulpecula
Mythology, bright stars, and deep-sky highlights.
Constellation
