Theta Aps
Observable Variable Star
Good (58/100)
Range: 4.65 - 6.2, Period: 111.0d, Type: SRB
HIP 68815; Theta Aps
VariableStar
Aps
Visible
Level 1
Naked eye / Binoculars - Monitor brightness changes
Physical Properties
Magnitude
5.50
Range
4.65 - 6.2
Period
111.000 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
M6.5III:
Star Color
Red
(B-V 1.55)
Position & Identifiers
RA
14h 05m 19.8s
Dec
-76° 47' 48.0"
Constellation
Aps
HR
5261
HIP
68815
Bayer
Theta
Variable ID
The Aps
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Visibility
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Light Curve
Comparison Stars for Theta Aps (6.4–8.6)
Nearby stable stars for estimating brightness (AAVSO)
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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
SRb 6.4 - 8.6p, 119d. Amp. 0.56V, 0.10(B-V), 0.26(U-B). IUE observations on Aug. 2, 1985 and Oct. 2, 1986 show slight | increase in visual mag. and decrease by 0.9 mag. in Mg II 2800.
Survey Image
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