Observe
1Physical Properties
Magnitude
7.10
Range
7.17 - 8.14
Period
13.6 hours
Variable Type
RR Lyrae (Pulsating)
Spectral Type
A-F
2Position & Identifiers
RA
19h 25m 28.0s
Dec
+42° 47' 04.0"
Constellation
Lyra
(Lyr)
HR
9128
HIP
95497
HD
182989
Variable ID
RR Lyr
Querying VizieR catalog...
3How easy to follow?
Magnitude
7.2 – 8.1 mag
Amplitude
1.0 mag
Period
13.6 h
Type
RRAB/BL
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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 | 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)
5Light Curve
6Comparison Stars for RR Lyr (7.2–8.1)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
7
Size Comparison
Querying VizieR for stellar data…
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
Discover
15Stellar Notes
RR Lyrae; RR Lyrae prototype; Period 13.6 hours
Survey Image
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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 6819
Open cluster
Open Cluster
mag 7.3
3.9°
Cygnus
V973 Cyg
Semi-regular variable, range 6.1–6.8
Variable Star
mag 6.34
4.2°
Cygnus
Fawaris
HIP 97165; Delta Cygni; 18 Cygni
Colorful double, sep 2.8″
Double Star
mag 2.87
4.2°
Cygnus
13 Lyr
Semi-regular variable, range 3.9–5.0
Variable Star
mag 4.04
5.6°
Lyra
NGC 6703
Elliptical galaxy
Galaxy
mag 11.4
7.4°
Lyra
XY Lyr
Semi-regular variable, range 5.8–6.3
Variable Star
mag 6.04
9.4°
Lyra
RS Cyg
Mira-type variable, range 6.5–9.5
Variable Star
mag 6.50
9.9°
Cygnus
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