Chaph
HIP 746; Beta Cas; 11 Cas
HIP 746; Beta Cas; 11 Cas
DoubleStar
Cas
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
2.27
Range
2.25 - 2.29
Period
2.4 hours
Variable Type
Delta Scuti (Low Amplitude)
Spectral Type
F2III
Star Color
Yellow-white
(B-V 0.34)
Distance
54.7 ly
Position & Identifiers
RA
00h 09m 10.7s
Dec
+59° 08' 59.0"
Constellation
Cas
HR
21
HIP
746
Bayer
Beta
Flamsteed
11 Cas
Variable ID
Bet Cas
Double Cat
107
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Visibility
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Multiple Star System
Separation
66.1″
Companion Mag
12.4
Position Angle
268°
Star Colors
A: Yellow-white
Discoverer
AGC 15
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 66.1″ · PA: 268° · 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, amp. 0.03V, 0.10101d.
Optical companion, 27d.
Color excess E(B-V) = 0.00.
Caph; Chaph; Kaff; Al Sanam al Nakah.
Survey Image
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