AO Cas
HIP 1415
Star
Cas
Visible
Level 2
Small telescope (4")
Physical Properties
Magnitude
6.14
Range
6.07 - 6.24
Period
3.5 days
Variable Type
Ellipsoidal Variable
Spectral Type
O9IIInn
Star Color
Blue-white
(B-V -0.13)
Position & Identifiers
RA
00h 17m 43.0s
Dec
+51° 25' 59.0"
Constellation
Cas
HR
65
HIP
1415
Variable ID
AO Cas
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Light Curve
Multiple Star System C: optical
Separation
2.8″
Companion Mag
15.0
Companion Sp
O8V
Position Angle
186°
Star Colors
A: Blue-white
B: Blue
Discoverer
TRN 8
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 Fusion
Stellar Notes
EB 5.96 - 6.11B, 6.07 - 6.24V, O9III+O9III, 3.523487d. Spontaneous var. in period. Polarization indicates | circumstellar envelope possibly related to mass exchange.
3.5236d, K 223.4k/s, V0 -31.1k/s, msin3i 10.1, asini 10.8. Apsidal period about 70y? vsini of secondary 145k/s.
In neutral hydrogen region.
Also classified O9IIIn, O9.5III, O8, and O9.5I. There are also indications of two O9III components.
Survey Image
Loading survey image…