Called Iota Pup in Argelander's atlas
HIP 39757; Rho Pup; 15 Pup
HIP 39757; Rho Pup; 15 Pup
DoubleStar
Pup
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
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
63.5 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
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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
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 26.6″ · PA: 27° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
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 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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