Wolf 489
Wolf 489 is a nearby degenerate star, the single known component of the system, located in the constellation Virgo.
Distance
Wolf 489, probably, is the 12th closest white dwarf, or, possibly, 9th–14th. Its trigonometric parallax from YPC is 121.4 ± 3.4 mas, corresponding to a distance 8.24 ± 0.23 pc, or 26.87 ± 0.75 ly.| Source | Parallax, mas | Distance, pc | Distance, ly |
| Woolley | |||
| GJ, 3rd version | |||
| YPC, 4th edition | |||
| Gaia DR3, 2023 |
Physical parameters
Wolf 489's mass is 0.55 ± 0.03 Solar masses, its surface gravity is 107.95 ± 0.02 cm·s−2, or approximately 91 000 of Earth's, corresponding to a radius 9089 km, or 143% of Earth's.Wolf 489's temperature is 5030 ± 120 K ; its cooling age, i. e. age as degenerate star is 5.19 Gyr. Wolf 489 should appear white with a slight shade of yellow, nearly the same color as a K-type main sequence star.