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HD 121228

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HD 121228

Observation data
Epoch J2000 Equinox J2000

Constellation

Centaurus

Right ascension

13^h55^m 52.322^s^[1]

Declination

−59° 22′ 16.45″^[1]

Apparent magnitude (V)

7.86^[2]

Characteristics

Spectral type

B1 Ib^[3]

Apparent magnitude (U)

7.34

Apparent magnitude (B)

8.00

Apparent magnitude (V)

7.86

Apparent magnitude (R)

8.88

Apparent magnitude (G)

7.7591

Apparent magnitude (J)

7.428

Apparent magnitude (H)

7.426

Apparent magnitude (K)

7.385

Astrometry

Proper motion (μ)

RA: −3.376^[1] mas/yr
Dec.: −1.300^[1] mas/yr

Parallax (π)

0.5846 ± 0.0260 mas^[1]

Distance

5,600 ± 200 ly
(1,710 ± 80 pc)

Absolute magnitude (M_V)

−5.32^[4]

Details

Mass

7.0^[5] M_☉

Radius

19.6^[6] R_☉

Luminosity

4,124^[7] L_☉

Surface gravity (log g)

2.14^[7] cgs

Temperature

26,424^[8] K

Age

31.6^[5] Myr

Other designations

CD−58°5362, HIP 68034, SAO 241302

Database references

SIMBAD

data

HD 121228 is a blue supergiant star located in the constellation Centaurus. The star is noted for its close visual proximity to the planetary nebula SuWt 2.^[9]

References[edit]

^ ^a ^b ^c ^d ^e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this sourceatVizieR.

^ Zacharias, N.; Finch, C. T.; Girard, T. M.; Henden, A.; Bartlett, J. L.; Monet, D. G.; Zacharias, M. I. (2012). "VizieR Online Data Catalog: UCAC4 Catalogue (Zacharias+, 2012)". VizieR On-line Data Catalog. Bibcode:2012yCat.1322....0Z.

^ Houk, Nancy (1975). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 1. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode:1975MSS...C01....0H.

^ Melnik, A. M.; Dambis, A. K. (2020). "Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions". Astrophysics and Space Science. 365 (7): 112. arXiv:2006.14649. Bibcode:2020Ap&SS.365..112M. doi:10.1007/s10509-020-03827-0. S2CID 220128144.

^ ^a ^b Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.

^ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.

^ ^a ^b Fouesneau, M.; Andrae, R.; Dharmawardena, T.; Rybizki, J.; Bailer-Jones, C. A. L.; Demleitner, M. (2022). "Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE". Astronomy and Astrophysics. 662: A125. arXiv:2201.03252. Bibcode:2022A&A...662A.125F. doi:10.1051/0004-6361/202141828. S2CID 245837778.

^ Westin, T. N. G. (1985). "The local system of early type stars. Spatial extent and kinematics". Astronomy and Astrophysics Supplement Series. 60: 99. Bibcode:1985A&AS...60...99W.

^ "HD 121228". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-01-11.