QR Vul
HIP 99824
DoubleStar
Vul
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
4.78
Spectral Type
B3Ve
Star Color
Blue
(B-V -0.18)
Position & Identifiers
RA
20h 15m 15.9s
Dec
+25° 35' 31.0"
Constellation
Vul
HR
7739
HIP
99824
Variable ID
QR Vul
Double Cat
13589
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
0.4″
Companion Mag
7.5
Position Angle
190°
Star Colors
A: Blue
B: Yellow-white
Discoverer
BU 983
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.4″ · PA: 190° · N up, E left
Unresolved · 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
4.60 - 4.80V. Sudden brightening in 1982, amp. 0.18V.
AB CPM, 680?y.
11.000d, subsequently rejected; probably shorter if variable.
Discovered in 1982 as a Be star. H alpha previously absorption; emission increased rapidly in September 1982.
Survey Image
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