RZ Cas
Observable Variable Star
Excellent (72/100)
Range: 6.2 - 7.7, Period: 1.2d, Type: EA
HIP 13133
VariableStar
Cas
Visible
Level 1
Naked eye / Binoculars - Monitor brightness changes
Physical Properties
Magnitude
6.18
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
A3V
Star Color
Yellow-white
(B-V 0.18)
Position & Identifiers
RA
02h 48m 55.5s
Dec
+69° 38' 03.0"
Constellation
Cas
HR
815
HIP
13133
Variable ID
RZ Cas
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Visibility
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Comparison Stars for RZ Cas (6.2–7.7)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Separation
3.9″
Companion Mag
14.9
Position Angle
230°
Star Colors
A: Yellow-white
Discoverer
DRS 3
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 3.9″ · PA: 230° · 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
EA 6.18 - 7.72V, 1.1952473d. Period varies irregularly. i 82.14d. May have two dark companions with orbital periods 23 | and 105y.
1.1953d, K 68k/s, V0 -40k/s, asini 1.12. Masses 1.8 and 0.6 solar.
In reflection nebulosity.
Survey Image
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