Menu

AR Cas

HIP 115990 DoubleStar Cas Visible Level 6 Professional/Research - Requires steady seeing
Star Map
Add to List Add to Plan Back to Catalog

Physical Properties

Magnitude 4.91
Range 4.82 - 4.96
Period 6.1 days
Variable Type Eclipsing Binary (Algol-type)
Spectral Type B3IV
Star Color Blue-white (B-V -0.12)
Distance 544 ly

Position & Identifiers

RA 23h 30m 02.0s
Dec +58° 32' 56.0"
Constellation Cas
HR 8926
HIP 115990
Variable ID AR Cas
Double Cat 16795

Visibility

Set a location in User Settings to see visibility data.

Light Curve

Multiple Star System

Components 8
Component IDs AC
Separation 0.7″
Companion Mag 9.3
Position Angle
Star Colors A: Blue-white B: Yellow
Discoverer STT 496

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E A (4.9) B (9.3)

Sep: 0.7″ · PA: 1° · 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 Fusion

Stellar Notes

ADS 16795A, EA 4.84 - 4.98V, 6.0663309d; i 90d.
AB, 4.9, 9.3V, 1500y, sep. 1.1". CD, 8.2 A0Vn, 9.8v, sep. 1.6"; vsini of C, 210k/s. Component E, optical.
ADS 16795A, 6.0663d, K 56.7k/s, V0 -13.4k/s, asini 4.58. Alternate orbits 6.0663309d, K 54.18k/s, V0 -10.10k/s, | asini 4.44; 6.0668d, K 56.2k/s, V0 -11.0k/s, asini 4.6027. Apsidal period 1500 1800y.
Cas-Tau OB1.
0.003" for components CD.

Survey Image

Loading survey image…