When is the best time to observe 14 Cephei?

14 Cephei is best observed from July through September, with peak visibility during August when it transits around midnight in the Northern Hemisphere.

Where is 14 Cephei located in the sky?

14 Cephei lies in the constellation Cepheus at right ascension 22h 02m and declination +58° 00′.

What telescope do I need to see 14 Cephei?

At magnitude 5.6, 14 Cephei is easy in 7×50 or 10×50 binoculars.

14 Cephei — Star in Cepheus

Magnitude 5.6^m Star Cepheus (Cep) Visible

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1Physical Properties

Magnitude 5.56

Variable Type Ellipsoidal Variable

Spectral Type O9Vn

Star Color Blue (B-V 0.06) (reddened by dust)

2Position & Identifiers

RA 22h 02m 04.6s

Dec +58° 00' 02.0"

Constellation Cepheus (Cep)

HR 8406

HIP 108772

HD 209481

SAO 33990

Flamsteed 14 Cep

Variable ID LZ Cep

SIMBAD

3How easy to spot?

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Equipment	Bortle 3	Bortle 4	Bortle 5
Naked eye Naked eye	Hard+	Hard+	Hard
50 mm finder 50mm finder	Easy	Easy	Easy
150 mm telescope 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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8

Spectral Classification

9

Hertzsprung-Russell Diagram

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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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14Stellar Notes

Variable Star

Ell 5.56 - 5.66B, 3.070510d.

Spectroscopic Binary

3.0705d, K1 98.0k/s, K2 207.4k/s, V0 -7.1k/s, m1sin3i 6.16, m2sin3i 2.91, a1sini 4.14, | a2sini 8.75. Mass transfer between components. Secondary overluminous for its mass.

Group/Cluster

NGC 457; Cep OB2.

Spectral

Also classified O8.5III + O9V:.

Alternative Names

Identifed as Mu Cep in "Uranometria Nova". This is as consistent with the Bayer Mu as HR 8316, but nearly | all other sources abide by the identification of Mu Cep as HR 8316. See HR 8316, HR 8371.