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Epsilon Antliae

Star in the constellation Antlia

Star in the constellation Antlia

|x%=81.5|y%=55.5 | b-v = +1.44 | u-b = +1.68

Epsilon Antliae is a single star in the southern constellation of Antlia. It is positioned near the western constellation border and forms part of the main asterism. The Bayer designation is Latinized from ε Antliae, and abbreviated Eps Ant or ε Ant, respectively. The apparent visual magnitude of this star is +4.51, which means it is visible to the naked eye at night. From parallax measurements, the distance to this star is approximately 700 ly. It is drifting further away from the Sun with a radial velocity of +22 km/s.

The stellar classification of this star is K3 IIIa, where the luminosity class of III indicates that this is an evolved giant star that has exhausted the supply of hydrogen at its core. It has expanded to around 56 times the radius of the Sun and radiates approximately 919 times the Sun's luminosity from its photosphere at an effective temperature of 4,237 K. Photometry measurements during the Hipparcos mission indicate that this star is undergoing periodic luminosity variation by 0.0034 magnitudes over an 11.07941 day cycle.

References

References

  1. "eps Ant".
  2. {{Cite Gaia DR3. 5437183238146150400
  3. (2014). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy and Astrophysics.
  4. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics.
  5. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission". The Astrophysical Journal Supplement Series.
  6. (1999). "Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions". Astronomisches Rechen-Institut Heidelberg.
  7. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory.
  8. (September 2008). "A catalogue of multiplicity among bright stellar systems". [[Monthly Notices of the Royal Astronomical Society]].
  9. (March 2002). "New periodic variables from the Hipparcos epoch photometry". Monthly Notices of the Royal Astronomical Society.
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k-type-giants antlia bayer-objects bright-star-catalogue-objects durchmusterung-objects henry-draper-catalogue-objects hipparcos-objects gould-objects
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