Menu

21 Aql

HIP 94477; 21 Aql Star Aql Visible Level 2 Small telescope (4")
Star Map
Add to List Add to Plan Back to Catalog

Physical Properties

Magnitude 5.15
Range 5.06 - 5.16
Period 41.5 hours
Variable Type Alpha2 CVn (Magnetic Rotating)
Spectral Type B8II-III
Star Color Blue-white (B-V -0.07)
Distance 362 ly

Position & Identifiers

RA 19h 13m 42.7s
Dec +02° 17' 37.0"
Constellation Aql
HR 7287
HIP 94477
Flamsteed 21 Aql
Variable ID V1288 Aql
Double Cat 12182

Visibility

Set a location in User Settings to see visibility data.

Light Curve

Multiple Star System

Separation 36.9″
Companion Mag 12.3
Position Angle 287°
Star Colors A: Blue-white
Discoverer HJ 879

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

Alpha CV 5.06 - 5.16V, 1.73d.
Companion optical.

Survey Image

Loading survey image…