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Rho Gruis — Star in Grus

Magnitude 4.8m Star Grus (Gru) Visible
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1Physical Properties

Magnitude 4.85
Spectral Type K0III giant
Star Color Orange (B-V 1.03)
Distance 109 ly

2Position & Identifiers

RA 22h 43m 30.0s
Dec -41° 24' 52.0"
Constellation Grus (Gru)
HR 8644
HIP 112203
HD 215104
SAO 231265
Bayer Rho
SIMBAD

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 Jul – Sep (peak: Aug)

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

Discover

14Stellar Notes

Wolf 630 group.
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.

NGC 7368
Hard+
Edge-on galaxy
Galaxy mag 12.32 2.1° Grus
Delta Gru
HIP 111043; Delta2 Gruis
Easy
Cool red giant
Star mag 4.11 3.4° Grus
Pi Gru
HIP 110478; Pi Gruis
Easy
Semi-regular variable, range 5.4–6.7
Variable Star mag 6.62 5.9° Grus
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