Xi Ser
HIP 86263; Xi Ser; 55 Ser
DoubleStar
Ser
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.54
Variable Type
Delta Scuti (Pulsating)
Spectral Type
A9IIIp(Sr)
Star Color
Yellow-white
(B-V 0.26)
Distance
108.7 ly
Position & Identifiers
RA
17h 37m 35.2s
Dec
-15° 23' 55.0"
Constellation
Ser
HR
6561
HIP
86263
Bayer
Xi
Flamsteed
55 Ser
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Visibility
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Multiple Star System
Separation
24.5″
Companion Mag
13.0
Position Angle
78°
Star Colors
A: Yellow-white
Discoverer
RST5090
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 24.5″ · PA: 78° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Delta Sct?, 3.52 - 3.54V.
Visual companion optical.
2.2923d, K 19.4k/s, V0 -42.8k/s, asini 0.612.
Hyades moving group.
Survey Image
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