- Surface temperature
- 5,050 K
- Radius
- 0.71 × the Sun
- Luminosity
- 0.293 × the Sun
- Spectral type
- K2V
Cataloged star · Database record + computed analysis
Ran
Designation: 18Eps Eri · HIP 16537 · HD 22049
A real star from the HYG catalog in the constellation Eridanus.
K-type: orange and patient
Its spectral type is K2V: cooler and longer-lived than the Sun, and often considered prime habitable-zone hosts. From its measured color, its surface temperature is roughly 5,048 K (4,775 °C), an estimate computed from the catalog's color index.
How far away is it?
It lies 10.5 light-years away (3.22 parsecs, from its measured parallax), within the Sun's wider neighborhood; its light is only 10.5 years old when it reaches your eye.
How powerful is it?
Its computed luminosity is only 0.293 of the Sun's output, a modest lamp by stellar standards (derived from its brightness and distance).
Can you see it?
At apparent magnitude 3.72, it is an easy naked-eye star under any reasonable sky. It is visible from both hemispheres.
It varies
This is a catalogued variable star (Eps): its brightness measurably changes over time, whether by pulsation, eclipses in a double system, or surface activity.
Everything above is computed from the catalog’s measured values for this star. Where a value is missing, the statement is omitted rather than guessed.
About this record
Data: the HYG stellar database v4.1 (Hipparcos + Yale + Gliese, CC BY-SA, © David Nash / astronexus). Want the full stories? Our deep star guides cover Sirius, Betelgeuse, Proxima Centauri, Vega and three dozen more. You can also browse the catalog or learn how stars live and die.