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HIP 22453 — Star in Auriga

Magnitude 4.9m Star Auriga (Aur) Visible
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1Physical Properties

Magnitude 4.88
Spectral Type K3.5IIIBa0.2: giant
Star Color Red (B-V 1.44)
Distance 130 ly

2Position & Identifiers

RA 04h 49m 54.6s
Dec +37° 29' 18.0"
Constellation Auriga (Aur)
HR 1533
HIP 22453
HD 30504
SAO 57447

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 Oct – Dec (peak: Nov)

5Survey Image

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6

Size Comparison

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7

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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

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14Stellar Notes

Formerly 1 Aur, now in Perseus.
15

Light Travel Time Machine

16

Relativistic Travel

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