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Delta Caeli — Star in Caelum

Magnitude 5.1m Star Caelum (Cae) Visible
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1Physical Properties

Magnitude 5.07
Spectral Type B2IV-V subgiant
Star Color Blue (B-V -0.19)

2Position & Identifiers

RA 04h 30m 50.1s
Dec -44° 57' 14.0"
Constellation Caelum (Cae)
HR 1443
HIP 21060
HD 28873
SAO 216850
Bayer Delta
Variable ID Var?

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium Hard+ 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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Explore

6

Size Comparison

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Compare Stars

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Spectral Classification

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Hertzsprung-Russell Diagram

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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

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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