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HIP 99747 — Star in Telescopium

Magnitude 5.7m Star Telescopium (Tel) Visible
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1Physical Properties

Magnitude 5.65
Spectral Type K4III giant
Star Color Red (B-V 1.50)
Distance 163 ly

2Position & Identifiers

RA 20h 14m 19.0s
Dec -52° 26' 44.0"
Constellation Telescopium (Tel)
HR 7714
HIP 99747
HD 191829
SAO 246495
SIMBAD

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Hard+ 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 Jun – Aug (peak: Jul)

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

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14

Light Travel Time Machine

15

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.

Xi Tel
Easy
Cool red giant
Star mag 4.94 1.1° Telescopium
NGC 6854
Hard+
Elliptical galaxy
Galaxy mag 13.0 2.3° Telescopium
Peacock
HIP 100751; Alpha Pavonis
Easy
Bright naked-eye star, mag 1.9
Star mag 1.94 4.6° Pavo
NU Pav
Hard+
Semi-regular variable, range 4.9–5.3
Variable Star mag 5.13 7.1° Pavo
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