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Kraz in Becvar — Star in Corvus

HIP 61359; Beta Corvi; 9 Corvi

Magnitude 2.6m Star Corvus (Crv) Visible
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About Kraz in Becvar

Description

Kraz is a yellow giant of spectral type G5II at magnitude 2.65 in the constellation Corvus. Located about 146 light-years from Earth, it has a luminosity roughly 160 times solar and a surface temperature of about 5,100 K. It is the second brightest star in the small but distinctive trapezoidal constellation of the Crow.

Observing Tips

Beta Corvi is part of the distinctive quadrilateral of Corvus — four stars forming a slightly lopsided rectangle that sits just south of Virgo. Despite its Beta designation, Kraz is not the brightest star in Corvus (that honor goes to Gamma Crv). It appears as a warm yellowish star. Best observed from March through June when Corvus rides highest in the southern evening sky.

History

The name Kraz is of uncertain origin and only came into modern use in the 20th century — it may be derived from an obsolete Arabic star name. Corvus was one of the 48 original Ptolemaic constellations and represents the crow that Apollo sent to fetch water. The crow dallied and brought back a water snake (Hydra) as an excuse, and Apollo placed all three in the sky as a reminder.

Fun Facts

Corvus is one of the few small constellations that is easy to recognize — its four main stars form a distinctive sail-shaped trapezoid that stands out in an otherwise sparse region of sky. Beta Corvi marks the northeastern corner of this figure.

Observe

1Physical Properties

Magnitude 2.65
Spectral Type G5III giant
Star Color Orange (B-V 0.89)
Distance 146 ly

2Position & Identifiers

RA 12h 34m 23.2s
Dec -23° 23' 48.0"
Constellation Corvus (Crv)
HR 4786
HIP 61359
HD 109379
SAO 180915
Bayer Beta
Flamsteed 9 Crv

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Easy Easy Easy
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 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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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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15Stellar Notes

Kraz in Becvar; Allen says unnamed.
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Light Travel Time Machine

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Relativistic Travel

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