Lambda Andromedae — Star in Andromeda
Observe
1Physical Properties
Magnitude
3.82
Range
3.65 - 4.05
Period
54 days
Variable Type
RS CVn (Chromospherically Active)
Spectral Type
G8IV k
subgiant
Star Color
Orange
(B-V 1.01)
Distance
86 ly
2Position & Identifiers
RA
23h 37m 33.9s
Dec
+46° 27' 29.0"
Constellation
Andromeda
(And)
HR
8961
HIP
116584
HD
222107
SAO
53204
Bayer
Lambda
Flamsteed
16 And
Variable ID
Lam And
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Easy | Medium+ | Medium+ |
| 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
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Best season
Aug – Oct
(peak: Sep)
5Survey Image
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7
Size Comparison
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8
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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
RS 3.69 - 3.97V, 4.74 - 5.13B, 54.20d. Amp. and cycle length vary in period 3200d. Also 0.25m var. in period about | 50d. H and K emission correlated with 56d light period.
20.5212d, K 6.6k/s, V0 +6.8k/s, asini 1.86. Radio binary. Unresolved by speckle interferometry. Possible radio | emitter.
16
Light Travel Time Machine
17
Relativistic Travel
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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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Article
Andromeda
Mythology, bright stars, and deep-sky highlights.
Constellation
