R Andromedae — Variable Star in Andromeda
Excellent (74/100)
Observe
1Physical Properties
Magnitude
7.39
Range
5.8 - 15.4
Period
409 days
Variable Type
Mira (Long-period Pulsating)
Spectral Type
S6.5IIIeZr6Ti2
bright giant
Star Color
Deep ruby red
(B-V 1.97)
2Position & Identifiers
RA
00h 24m 02.0s
Dec
+38° 34' 38.0"
Constellation
Andromeda
(And)
HR
90
HD
1967
SAO
53860
Variable ID
R And
3How easy to follow?
Magnitude
5.8 – 14.9 mag
Amplitude
9.1 mag
Period
409 d
Type
M
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Imp. | Imp. | Imp. |
| 50 mm finder 50mm finder | Imp. | Imp. | Imp. |
| 150 mm telescope 150mm scope | Imp. | Imp. | Imp. |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
To reach "Medium" at Bortle 3, you'd need at least a 540 mm reflector.
4Visibility
Set a location in User Settings to see visibility data.
Best season
Aug – Oct
(peak: Sep)
5Survey Image
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6Light Curve
7Comparison Stars for R And (5.8–14.9)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
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
M 5.8 - 14.9v, 409.33d.
CO emission. Technetium star, also classified S6.5IIIe, S4/4eZr6Ti2, and S3,5e - S8,8e (M7e).
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.
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Mythology, bright stars, and deep-sky highlights.
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