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DO Eri

HIP 18339 Star Eridanus (Eri) Visible Level 2 Small telescope (4")
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Physical Properties

Magnitude 6.00
Range 5.97 - 6.00
Period 12.5 days
Variable Type roAp
Spectral Type A5pSrCrEu
Star Color Yellow-white (B-V 0.32)

Position & Identifiers

RA 03h 55m 16.3s
Dec -12° 05' 57.0"
Constellation Eridanus (Eri)
HR 1217
HIP 18339
Variable ID DO Eri

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Spectral Classification

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Stellar Absorption Spectrum

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Stellar Notes

Alpha CV 5.97 - 6.00V, 12.4580 or 12.4564d. Rotation and magnetic field same period, no polarity reversal. Spectrum | variable, 12.460d. Maximum intensity Eu at minimum light.
Possibly the coolest magnetic star known, about 7000K. Variously classified Ap to F0pSr.

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