Observe
1Physical Properties
Magnitude
5.34
Range
5.29 - 5.83
Period
429 days
Variable Type
*
Spectral Type
A0Ib-IIp
Star Color
Yellow-white
(B-V 0.24)
2Position & Identifiers
RA
10h 18m 07.6s
Dec
-28° 59' 31.0"
Constellation
Antlia
(Ant)
HR
4049
HIP
50456
HD
89353
Variable ID
AG Ant
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3How easy to follow?
Magnitude
5.3 – 5.7 mag
Amplitude
0.4 mag
Period
429 d
Type
*
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Hard | V. hard+ | V. hard |
| 50 mm finder 50mm finder | Medium | Medium | Medium |
| 150 mm telescope 150mm scope | Medium | Medium | Medium |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Jan – Mar
(peak: Feb)
5Light Curve
6Comparison Stars for AG Ant (5.3–5.7)
Nearby stable stars for estimating brightness (AAVSO)
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7
Size Comparison
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8
Compare Stars
9
Spectral Classification
10
Hertzsprung-Russell Diagram
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11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
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15Stellar Notes
Alpha Cyg: 5.30 - 5.65V, amp. 0.65U, about 140d.
Lambda Boo star. Pronounced line weakening makes MK classification unsatisfactory. Visible spectrum shows weak Ca II | lines and He I 4021 is absent, as well as expected lines of Fe II and Mg II. UV spectrum, as obtained with IUE, | anomalous for late B/early A supergiants, showing numerous C I and C II lines. All spectra indicate very metal- | deficient star with high C abundance (see Waelkens et al. 1987, The Messenger No. 49, p. 29).
Survey Image
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Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
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Article
Antlia
Mythology, bright stars, and deep-sky highlights.
Constellation
