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Called Iota Pup in Argelander's atlas

HIP 39757; Rho Pup; 15 Pup

HIP 39757; Rho Pup; 15 Pup Star Pup Visible Level 1 Naked eye / Binoculars
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Physical Properties

Magnitude 2.81
Range 2.76 - 2.86
Period 3.4 hours
Variable Type Delta Scuti (Pulsating)
Spectral Type F5IIkF2IImF5II
Star Color Yellow-white (B-V 0.43)
Distance 64 ly

Position & Identifiers

RA 08h 07m 32.6s
Dec -24° 18' 15.0"
Constellation Pup
HR 3185
HIP 39757
Bayer Rho
Flamsteed 15 Pup
Variable ID Rho Pup

Visibility

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Light Curve

Multiple Star System

Separation 26.6″
Companion Mag 13.8
Position Angle 27°
Star Colors A: Yellow-white
Discoverer RST5284

Size Comparison

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Stellar Lifecycle

Spectral Classification

Hertzsprung-Russell Diagram

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Blackbody Spectrum

Stellar Absorption Spectrum

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

Stellar Fusion

Stellar Notes

Delta Sct 2.68 - 2.78v, 0.14088143d.
0.14088143d over 60 yr. interval.
High Fe abundance. Violet shifted CaII K emission at some phase of light curve.
Called Iota Pup in Argelander's atlas, and in Bayer.

Survey Image

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