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Hassaleh in Becvar — Star in Auriga

HIP 23015; Iota Aurigae; 3 Aurigae

Magnitude 2.7m Star Auriga (Aur) Visible
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About Hassaleh in Becvar

Description

Hassaleh is an orange giant of spectral type K3II at magnitude 2.69 in Auriga. Located about 490 light-years from Earth, it is a fairly luminous evolved star with roughly 2,600 times the Sun's luminosity and a diameter about 130 times solar. Hassaleh forms part of the small triangle of stars known as 'the Kids' (Haedi) near Capella.

Observing Tips

Look for Hassaleh as part of a small triangle of stars just south of brilliant Capella — this is the Kids asterism (Iota, Eta, and Zeta Aurigae). Its warm orange color contrasts with the blue-white of Eta Aurigae nearby. Best observed from November through April when Auriga rides high in the winter sky.

History

The name Hassaleh is derived from the Arabic 'al-'anz,' meaning 'the she-goat,' though this name is more commonly associated with nearby Epsilon Aur. The 'Kids' asterism near Capella (the Mother Goat) represents baby goats in the mythological story. In medieval European astronomy, the Kids were considered important weather indicators.

Fun Facts

The three Kids stars near Capella (Iota, Eta, and Epsilon Aurigae) are all very different types of stars despite appearing close together — Iota is a distant orange giant, Eta is a hot B-type star, and Epsilon is one of the most mysterious eclipsing binaries in the sky with a dark companion of unknown nature.

Observe

1Physical Properties

Magnitude 2.69
Spectral Type K3II-III bright giant
Star Color Red (B-V 1.53)
Distance 491 ly

2Position & Identifiers

RA 04h 56m 59.6s
Dec +33° 09' 58.0"
Constellation Auriga (Aur)
HR 1577
HIP 23015
HD 31398
SAO 57522
Bayer Iota
Flamsteed 3 Aur

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 Oct – Dec (peak: Nov)

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

4.0 - 4.15p.
Hassaleh in Becvar.
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Light Travel Time Machine

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Relativistic Travel

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