U Sge
Excellent (74/100)
HIP 94910
VariableStar
Sge
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
6.58
Range
6.45 - 9.28
Period
3.4 days
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
B8III+K:
Star Color
White
(B-V 0.03)
Position & Identifiers
RA
19h 18m 48.5s
Dec
+19° 36' 38.0"
Constellation
Sge
HR
7326
HIP
94910
Variable ID
U Sge
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Light Curve
Comparison Stars for U Sge (6.6–9.2)
Nearby stable stars for estimating brightness (AAVSO)
Loading comparison stars…
Multiple Star System
Separation
92.8″
Companion Mag
9.7
Position Angle
318°
Star Colors
A: White
B: Yellow
Discoverer
AG 432
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 92.8″ · PA: 318° · N up, E left
Resolved · 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
EA 6.58 - 9.18V, 3.3806260d. Period varies irregularly. i 90d. Semi-detached system.
3.3806d, K 69.7k/s, V0 -10.1k/s, asini 3.24. Alternate orbit 3.3806205d, K 76k/s, V0 -5k/s, asini 3.25.
In cluster 4-5 Vul = Collinder 399 (nonmember).
Shell star.
Survey Image
Loading survey image…