Star profile
Theta Antliae
What is Theta Antliae
Theta Antliae is a pair discovered by the South African astronomer W. S. Finsen in 1952, well into the twentieth century—an era when the catalogue of visible binaries was still being filled in. The primary is a white star with strong metallic lines; its companion is a yellow giant. Together they shine at 339 light-years, in the modest constellation of the Air Pump that Lacaille drew to honour the Enlightenment.
Where it is and when to see it
Theta Antliae lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is February: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.
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The signature wall
Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.
A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for Theta Antliae
- Constellation
- Antlia
- Apparent magnitude
- 4.78
- Distance
- 339.4 light years
- Coordinates (J2000)
- RA 146.050° · Dec -27.769°
- Catalogue
- HIP 47758 · HD 84367
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Antlia
Antlia has 23 stars in Stelvia's catalogue. Here are a few of them.
- Alpha Antliae4.28
- Epsilon Antliae4.51
- Iota Antliae4.60
- Eta Antliae5.23
- HIP 508885.34
- HIP 541735.43
- HIP 465785.49
- HIP 518215.50