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Delta Indi — Star in Indus

Magnitude 4.4m Star Indus (Ind) Visible
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1Physical Properties

Magnitude 4.40
Spectral Type F0IV subgiant
Star Color Yellow-white (B-V 0.28)
Distance 163 ly

2Position & Identifiers

RA 21h 57m 55.1s
Dec -54° 59' 33.0"
Constellation Indus (Ind)
HR 8368
HIP 108431
HD 208450
SAO 247244
Bayer Delta

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium+ Medium+ Medium
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 Jul – Sep (peak: Aug)

5Survey Image

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7

Size Comparison

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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

5.1 F0IV, 5.1 F0IV, 6.094y, a = 0.127", or 12.242y, a = 0.160". Combined mag., colors.
16

Light Travel Time Machine

17

Relativistic Travel

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