Theta Cir
Observable Variable Star
Good (58/100)
Range: 5.0 - 5.4, Period: 2.0d, Type: Gamma Cas
HIP 73129; Theta Cir
VariableStar
Cir
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
5.11
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B4Vnpe
Star Color
White
(B-V 0.00)
Position & Identifiers
RA
14h 56m 44.0s
Dec
-62° 46' 51.0"
Constellation
Cir
HR
5551
HIP
73129
Bayer
Theta
Variable ID
The Cir
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Comparison Stars for Theta Cir (5.0–5.4)
Nearby stable stars for estimating brightness (AAVSO)
Loading comparison stars…
Multiple Star System
Separation
0.1″
Companion Mag
5.9
Position Angle
267°
Star Colors
A: White
Discoverer
FIN 372
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: 267° · N up, E left
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
Querying VizieR for stellar data…
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Gamma Cas 5.02 - 5.44V. Amp. 0.03 on time scale 2d reported. H alpha varies.
Sco-Cen assoc.
H alpha variable.
Survey Image
Loading survey image…