DU Crucis

DU Crucis

The centre of NGC 4755, with DU Cru at top right
Credit: NASA/ESA and Jesús Maíz Apellániz (Instituto de Astrofísica de Andalucía, Spain)
Observation data
Epoch J2000      Equinox J2000
Constellation Crux
Right ascension 12h 53m 41.33485s[1]
Declination −60° 20′ 57.9647″[1]
Apparent magnitude (V) 7.45[2]
Characteristics
Spectral type M2- Iab[3]
U−B color index +2.57[2]
B−V color index +2.22[2]
Variable type Lc[4]
Astrometry
Radial velocity (Rv)−21.24[5] km/s
Proper motion (μ) RA: −4.703[6] mas/yr
Dec.: −1.162[6] mas/yr
Parallax (π)0.5075 ± 0.0516 mas[6]
Distance2,600[7][8] pc
Absolute magnitude (MV)−5.52[9]
Details[10]
Radius664 R☉
Luminosity69,600 L☉
Temperature3,467[9] K
Other designations
DU Cru, CD−59°4459, HIP 62918, SAO 252073, 2MASS J12534132-6020578, IRAS 12506-6004
Database references
SIMBADdata

DU Crucis is a red supergiant and slow irregular variable star in the open cluster NGC 4755, which is also known as the Kappa (κ) Crucis Cluster or Jewel Box Cluster.

  1. ^ a b Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference dachs1984 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference perkins was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference gcvs was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference mermilliod was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference dr2 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference aidelman was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference corti2013 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference harris was invoked but never defined (see the help page).
  10. ^ Healy, Sarah; Horiuchi, Shunsaku; Molla, Marta Colomer; Milisavljevic, Dan; Tseng, Jeff; Bergin, Faith; Weil, Kathryn; Tanaka, Masaomi (2024-03-23). "Red Supergiant Candidates for Multimessenger Monitoring of the Next Galactic Supernova". Monthly Notices of the Royal Astronomical Society. 529 (4): 3630–3650. arXiv:2307.08785. Bibcode:2024MNRAS.529.3630H. doi:10.1093/mnras/stae738. ISSN 0035-8711.