T Lyrae — Variable Star in Lyra
Excellent (60/100)
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1Physical Properties
Magnitude
7.50
Range
7.5 - 9.2
Period
110 days
Variable Type
Slow Irregular Variable
Spectral Type
C
Star Color
Deep ruby red
(B-V 3.00)
2Position & Identifiers
RA
18h 32m 20.0s
Dec
+36° 59' 56.0"
Constellation
Lyra
(Lyr)
HR
9111
HIP
90883
Variable ID
T Lyr
Querying VizieR catalog...
3How easy to follow?
Magnitude
7.5 – 9.2 mag
Amplitude
1.7 mag
Period
110 d
Type
LB
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Imp. | Imp. | Imp. |
| 50 mm finder 50mm finder | Medium | Medium | Hard+ |
| 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
May – Jul
(peak: Jun)
5Survey Image
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6Light Curve
7Comparison Stars for T Lyr (7.5–9.2)
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
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16Stellar Notes
Carbon star; Period 110d
Reddest star in Extended Hipparcos catalog; Carbon star
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.
Vega
HIP 91262; Alpha Lyrae; 3 Lyrae
Bright naked-eye star, mag 0.0
Star
mag 0.03
2.0°
Lyra
Zeta Lyr
HIP 91971; Zeta1 Lyrae; 6 Lyrae
Easy double, sep 43.9″
Double Star
mag 4.36
2.5°
Lyra
XY Lyr
Semi-regular variable, range 5.8–6.3
Variable Star
mag 6.04
2.9°
Lyra
Sheliak
HIP 92420; Beta Lyrae; 10 Lyrae
Eclipsing binary, period 12.9d
Variable Star
mag 3.45
5.1°
Lyra
M57
NGC 6720
Planetary nebula — try an OIII filter
Planetary Nebula
mag 9.0
5.9°
Lyra
13 Lyr
Semi-regular variable, range 3.9–5.0
Variable Star
mag 4.04
8.2°
Lyra
NGC 6703
Elliptical galaxy
Galaxy
mag 11.4
9.0°
Lyra
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