When is the best time to observe SV Crateris?

SV Crateris is best observed from February through April, with peak visibility during March when it transits around midnight in the Northern Hemisphere.

Where is SV Crateris located in the sky?

SV Crateris lies in the constellation Crater at right ascension 11h 17m and declination -07° 08′.

What telescope do I need to see SV Crateris?

At magnitude 6.1, SV Crateris is easy in 7×50 or 10×50 binoculars.

SV Crateris — Star in Crater

Magnitude 6.1^m Star Crater (Crt) Visible

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Observe

1Physical Properties

Magnitude 6.14

Variable Type Alpha2 CVn (Magnetic Rotating)

Spectral Type A8IVpeSrCrSi supergiant

Star Color Yellow-white (B-V 0.20)

Distance 815 ly

2Position & Identifiers

RA 11h 16m 58.2s

Dec -07° 08' 05.0"

Constellation Crater (Crt)

HR 4369

HIP 55106

HD 98088

SAO 138106

Variable ID SV Crt

Double Cat 8115

SIMBAD

3How easy to spot?

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Equipment	Bortle 3	Bortle 4	Bortle 5
Naked eye Naked eye	Hard	Hard	V. 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 Feb – Apr (peak: Mar)

5Survey Image

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Size Comparison

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Spectral Classification

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Hertzsprung-Russell Diagram

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

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Stellar Lifecycle

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Blackbody Spectrum

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Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

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Stellar Fusion

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14Stellar Notes

Variable Star

ADS 8115A, brighter component of the SB system, Alpha CV 6.32 - 6.35B, 5.90513d, two unequal max. Same rotation and | magnetic per., related var. EuII and SrII emission.

Double Star

AB CPM. B, 11.5v at 1". C, optical.

Spectroscopic Binary

ADS 8115A, 5.90513d, K 74.7k/s, V0 -8.1k/s, msin3i 1.73, asini 5.98. Apsidal per. about 700 yrs. Rare example of | an Ap star member of a close binary.

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