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HIP 6631 — Star in Hydrus

Magnitude 5.9m Star Hydrus (Hyi) Visible
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1Physical Properties

Magnitude 5.93
Spectral Type K5III giant
Star Color Red (B-V 1.56)

2Position & Identifiers

RA 01h 25m 05.3s
Dec -64° 22' 10.0"
Constellation Hydrus (Hyi)
HR 420
HIP 6631
HD 8810
SAO 248381
SIMBAD

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Hard+ Hard V. 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 Sep – Nov (peak: Oct)

5Survey Image

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6

Size Comparison

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7

Compare Stars

8

Spectral Classification

9

Hertzsprung-Russell Diagram

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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
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

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.

Kappa Tuc
Easy
Easy double, sep 4.6″
Double Star mag 4.86 4.6° Tucana
NGC 466
Hard+
Bright spiral galaxy
Galaxy mag 12.74 5.5° Tucana
C104
NGC 362
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 6.6 6.8° Tucana
NGC 458
Medium
Open cluster
Open Cluster mag 11.66 7.2° Tucana
Show on Map

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