74 Aqr
HIP 113031; 74 Aqr
DoubleStar
Aqr
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
5.80
Variable Type
Alpha2 CVn (Magnetic Rotating)
Spectral Type
B9III
Star Color
Blue-white
(B-V -0.08)
Position & Identifiers
RA
22h 53m 28.7s
Dec
-11° 37' 00.0"
Constellation
Aqr
HR
8704
HIP
113031
Flamsteed
74 Aqr
Variable ID
HI Aqr
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Visibility
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Multiple Star System
Separation
0.1″
Companion Mag
6.4
Position Angle
283°
Star Colors
A: Blue-white
Discoverer
MCA 73
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: 283° · 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
Alpha CV, amp. 0.005V. Possible periods 0.724, 1.27, 3.40, 1.70d.
Mag., colors for combined light. Occultation double 6.7, 6.7v sep. 0.2"; speckle interferometry, sep. 0.076".
3.4298d, K 95.3k/s, V0 -7.1k/s, msin3i 1.81, asini 4.49. Shortest known period for an Mn star. Both components | show mercury lines; only primary, manganese.
Hg, Mn.
Survey Image
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