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10 Delphini — Star in Delphinus

Magnitude 6.0m Star Delphinus (Del) Visible
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Observe

1Physical Properties

Magnitude 5.99
Spectral Type gK4
Star Color Orange (B-V 1.24)

2Position & Identifiers

RA 20h 41m 16.2s
Dec +14° 34' 59.0"
Constellation Delphinus (Del)
HR 7918
HIP 102080
HD 197121
SAO 106384
Flamsteed 10 Del
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 Jun – Aug (peak: Jul)

5Survey Image

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Explore

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.

Gamma Del
HIP 102531; Gamma1 Delphini; 12 Delphini
Easy
Colorful double, sep 9.8″
Double Star mag 5.14 2.0° Delphinus
U Del
Easy
Semi-regular variable, range 6.1–7.6
Variable Star mag 6.38 3.6° Delphinus
C42
NGC 7006
Medium+
Globular cluster — dense ball of ancient stars
Globular Cluster mag 10.6 5.1° Delphinus
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