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FF Aql

Observable Variable Star Excellent (60/100)

Range: 5.2 - 5.7, Period: 4.5d

HIP 93124 VariableStar Aql Visible Level 2 Small telescope (4") - Monitor brightness changes
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Physical Properties

Magnitude 5.38
Spectral Type F8Ib
Star Color Orange (B-V 0.80)

Position & Identifiers

RA 18h 58m 14.7s
Dec +17° 21' 39.0"
Constellation Aql
HR 7165
HIP 93124
Variable ID FF Aql
Double Cat 11884

Visibility

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Comparison Stars

Nearby stable stars for estimating brightness (AAVSO)

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Multiple Star System

Separation 7.0″
Companion Mag 10.1
Position Angle 146°
Star Colors A: Orange
Discoverer HO 91

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 146° A (5.4) B (10.1)

Sep: 7.0″ · PA: 146° · 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

ADS 11884A, CDelta 5.18 - 5.68V, 4.470916d. Magnetic field. Possible blue companion.
Companion blue star?
1435d, K 3.5k/s, V0 -17.4k/s, asini 69.1. RV may also vary in 4109d.

Survey Image

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