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8 Ursae Minoris

8 Ursae Minoris / Baekdu
Observation data
Epoch J2000      Equinox
Constellation Ursa Minor
Right ascension 14h 56m 48.35230s[1]
Declination +74° 54′ 03.3212″[1]
Apparent magnitude (V) 6.835[2]
Characteristics
Evolutionary stage Red clump[3]
Spectral type G8III[4]
Astrometry
Radial velocity (Rv)−9.55[1] km/s
Proper motion (μ) RA: +13.139[1] mas/yr
Dec.: +3.578[1] mas/yr
Parallax (π)6.1278 ± 0.0142 mas[1]
Distance532 ± 1 ly
(163.2 ± 0.4 pc)
Absolute magnitude (MV)+0.82[5]
Details
Mass1.51±0.06[3] M☉
Radius10.73±0.14[3] R☉
Luminosity52.9±5.9[3] L☉
Surface gravity (log g)2.53[1] cgs
Temperature4,847±100[3] K
Metallicity [Fe/H]−0.03±0.02[6] dex
Rotation100–200 d[3]
Age377[1] Myr
Other designations
Baekdu, HD 133086, HIP 73136, BD+75 547, 2MASS J14564834+7454032, WDS J14568+7454A, Gaia DR3 1700658653802527104[7]
Database references
SIMBADdata

8 Ursae Minoris is a 7th-magnitude red clump star in Ursa Minor. The star is unusually rich in lithium, with an abundance of A = 2.0±0.2 dex.[8][9][3]

In the 2019 NameExoWorlds competition, the star was assigned to contestants in South Korea. It was named Baekdu after Paektu Mountain, the tallest mountain in North Korea.[10][11]

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  3. ^ a b c d e f g Cite error: The named reference hon2023 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference abt2004 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference xhip was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference goda2019 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference simbad was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference kumar2011 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference gao2022 was invoked but never defined (see the help page).
  10. ^ "Approved names". NameExoworlds. Archived from the original on 2019-12-19. Retrieved 2020-01-02.
  11. ^ "International Astronomical Union | IAU". www.iau.org. Archived from the original on 2022-12-05. Retrieved 2020-01-02.

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