R Aql
Observable Variable Star
Excellent (68/100)
Range: 5.5 - 12.0, Period: 268.8d, Type: M
HIP 93820
VariableStar
Aql
Visible
Level 1
Naked eye / Binoculars - Monitor brightness changes
Physical Properties
Magnitude
6.09
Range
5.5 - 12.0
Period
268.800 days
Variable Type
Mira (Long-period Pulsating)
Spectral Type
M7IIIe
Star Color
Red
(B-V 1.60)
Position & Identifiers
RA
19h 06m 22.2s
Dec
+08° 13' 48.0"
Constellation
Aql
HR
7243
HIP
93820
Variable ID
R Aql
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Visibility
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Light Curve
Comparison Stars for R Aql (5.5–12.0)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Components
3
Component IDs
AC
Separation
78.2″
Companion Mag
11.4
Position Angle
300°
Star Colors
A: Red
Discoverer
BLL 36
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 78.2″ · PA: 300° · 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
M 5.5 - 12.0v, 284.2d. Period changes 348.980 - 0.554202n + 0.000552309n2 from JD 2399190. Radio flare detected | in this position.
OH and H2O emission. IR spectra show water vapor. OH, H2O and SiO maser. Also classified M5e-M9e.
Survey Image
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