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Psi Pegasi — Star in Pegasus

Magnitude 4.7m Star Pegasus (Peg) Visible
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Observe

1Physical Properties

Magnitude 4.66
Range 4.61 - 4.70
Variable Type Semi-Regular Variable
Spectral Type M3III giant
Star Color Red (B-V 1.59)
Distance 652 ly

2Position & Identifiers

RA 23h 57m 45.5s
Dec +25° 08' 29.0"
Constellation Pegasus (Peg)
HR 9064
HIP 118131
HD 224427
SAO 91611
Bayer Psi
Flamsteed 84 Peg

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium+ Medium Hard+
50mm finder Easy Easy Easy
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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Explore

6

Size Comparison

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7

Compare Stars

8

Spectral Classification

9

Hertzsprung-Russell Diagram

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10

Stellar Lifecycle

11

Blackbody Spectrum

12

Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

13

Stellar Fusion

Discover

14Stellar Notes

4.63 - 4.69V.
UMa stream.
15

Light Travel Time Machine

16

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.

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