Psi Aqr
HIP 114855; Psi1 Aqr; 91 Aqr
HIP 114855; Psi1 Aqr; 91 Aqr
DoubleStar
Aqr
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.21
Spectral Type
K0III
Star Color
Orange
(B-V 1.11)
Distance
66.6 ly
Position & Identifiers
RA
23h 15m 53.5s
Dec
-09° 05' 16.0"
Constellation
Aqr
HR
8841
HIP
114855
Bayer
Psi1
Flamsteed
91 Aqr
Double Cat
16633
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Visibility
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Multiple Star System
Components
5
Component IDs
AB
Separation
49.2″
Companion Mag
9.9
Companion Sp
K3
Position Angle
312°
Star Colors
A: Orange
B: Orange
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 49.2″ · PA: 312° · 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
BC, 10.0, 10.5v, K3V, 130y, a = 0.6", mean mass BC 0.35 solar. BC combined, 9.19V, +1.03(B-V), +0.93(U-B), CPM with | A. Component C is a close double, equal components, showing orbital motion.
Variously described as belonging to the 61 Cyg, Epsilon Ind or Zeta Her groups.
Survey Image
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