V Pup
Observable Variable Star
Excellent (74/100)
Range: 4.7 - 5.2, Period: 1.5d, Type: EB
HIP 38957
VariableStar
Pup
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
4.41
Variable Type
Eclipsing Binary (Beta Lyrae-type)
Spectral Type
B1Vp+B3IV:
Star Color
Blue
(B-V -0.17)
Position & Identifiers
RA
07h 58m 14.4s
Dec
-49° 14' 42.0"
Constellation
Pup
HR
3129
HIP
38957
Variable ID
V Pup
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Visibility
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Comparison Stars for V Pup (4.7–5.2)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Components
5
Component IDs
AD
Separation
6.2″
Companion Mag
11.5
Companion Sp
B3IV
Position Angle
69°
Star Colors
A: Blue
B: Blue
Discoverer
HRG 137
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 6.2″ · PA: 69° · 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
Comp. A of visual double, EB 4.74 - 5.25p, 1.4544877d, contact binary, equal components.
Component A of visual system, 1.4545d. Relative vel. 610k. Probably consists of two ellipsoids in nearly circular orbit | inclined 75d. Matter appears to stream from secondary to primary.
Member of Pleiades group.
Also classified B2II-III(n). Possible X-ray source 3U0750-49.
Survey Image
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