T Vulpeculae — Variable Star in Vulpecula
Excellent (68/100)
Observe
1Physical Properties
Magnitude
5.77
Range
5.4 - 6.1
Period
4.4 days
Variable Type
Classical Cepheid
Spectral Type
F5Ib
supergiant
Star Color
Orange
(B-V 0.72)
Distance
544 ly
2Position & Identifiers
RA
20h 51m 28.2s
Dec
+28° 15' 02.0"
Constellation
Vulpecula
(Vul)
HR
7988
HIP
102949
HD
198726
SAO
89216
Variable ID
T Vul
Querying VizieR catalog...
3How easy to follow?
Magnitude
5.4 – 6.1 mag
Amplitude
0.6 mag
Period
4.44 d
Type
DCEP
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | V. hard+ | V. hard | V. hard |
| 50 mm finder 50mm finder | Medium | Medium | Medium |
| 150 mm telescope 150mm scope | Medium | Medium | Medium |
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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6Light Curve
7Comparison Stars for T Vul (5.4–6.1)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
8
Size Comparison
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9
Compare Stars
10
Spectral Classification
11
Hertzsprung-Russell Diagram
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12
Stellar Lifecycle
13
Blackbody Spectrum
14
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
15
Stellar Fusion
Discover
16Stellar Notes
CDelta 5.44 - 6.06V, 4.435572d.
17
Light Travel Time Machine
18
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.
NGC 7013
Bright spiral galaxy
Galaxy
mag 12.0
3.1°
Cygnus
Network nebula
NGC 6995
Supernova remnant
Supernova Remnant
mag 7.00
3.2°
Cygnus
DT Cyg
Pulsating variable, period 2.5d
Variable Star
mag 5.82
4.4°
Cygnus
X Cyg
Pulsating variable, period 16.4d
Variable Star
mag 6.47
7.5°
Cygnus
22 Vul
Observable variable star
Variable Star
mag 5.15
9.4°
Vulpecula
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Article
Vulpecula
Mythology, bright stars, and deep-sky highlights.
Constellation
