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Epsilon Leporis — Star in Lepus

Magnitude 3.2m Star Lepus (Lep) Visible
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About Epsilon Lep

Description

Epsilon Leporis is an orange giant of spectral type K5III at magnitude 3.19 in Lepus (the Hare). Located about 213 light-years from Earth, it has a surface temperature of only about 3,900 K and a strong orange-red color. It is one of the cooler bright stars in this region of the sky.

Observing Tips

Epsilon Lep lies in the small constellation Lepus, just below Orion. Lepus is easily found as a group of moderately bright stars directly beneath Orion's feet. Epsilon Lep appears distinctly orange in binoculars. Best observed from December through March when Orion and Lepus are high in the evening sky.

History

Epsilon Leporis has no traditional proper name. Lepus is one of the 48 Ptolemaic constellations and has been recognized as a hare since Greek and Roman times. Mythologically, the Hare was placed at Orion's feet because the great hunter was fond of hunting hares.

Fun Facts

Lepus contains the famous Crimson Star (R Leporis), one of the reddest stars visible in a telescope. While Epsilon Lep is much brighter and less dramatically red, it is the best naked-eye example of Lepus's trend toward warm-colored stars.

Observe

1Physical Properties

Magnitude 3.19
Range 3.18 - 3.19
Variable Type Slow Irregular Variable
Spectral Type K4 III giant
Star Color Orange (B-V 1.46) (reddened by dust)
Distance 213 ly

2Position & Identifiers

RA 05h 05m 27.7s
Dec -22° 22' 16.0"
Constellation Lepus (Lep)
HR 1654
HIP 23685
HD 32887
SAO 170051
Bayer Epsilon
Flamsteed 2 Lep

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Easy Easy Medium+
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 Nov – Jan (peak: Dec)

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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Light Travel Time Machine

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Relativistic Travel

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