Back Zeta Cassiopeiae AST Zeta Cassiopeiae BS Zeta Cassiopeiae Catalan Zeta Cassiopeiae German Zeta Cassiopeiae Spanish زتا ذاتالکرسی Persian Zeta Cassiopeiae French Zeta Cassiopeiae Italian カシオペヤ座ゼータ星 Japanese Zeta Cassiopeiae Polish
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 00h 36m 58.28419s[1] |
| Declination | +53° 53′ 48.8673″[1] |
| Apparent magnitude (V) | 3.66[2] (3.59 - 3.68[3]) |
| Characteristics | |
| Spectral type | B2IV[4] |
| U−B color index | –0.89[5] |
| B−V color index | –0.19[5] |
| Variable type | SPB[3] |
| Astrometry | |
| Radial velocity (Rv) | 2.0[3] km/s |
| Proper motion (μ) | RA: 17.38[1] mas/yr Dec.: –9.86[1] mas/yr |
| Parallax (π) | 5.50 ± 0.16 mas[1] |
| Distance | 590 ± 20 ly (182 ± 5 pc) |
| Absolute magnitude (MV) | –2.8[6] |
| Details[3] | |
| Mass | 8.3 M☉ |
| Radius | 5.9 R☉ |
| Luminosity | 5,500 L☉ |
| Surface gravity (log g) | 3.81 cgs |
| Temperature | 20,426 K |
| Metallicity [Fe/H] | –0.23[7] dex |
| Rotation | 5.37045 |
| Rotational velocity (v sin i) | 17 ± 3 km/s |
| Other designations | |
Fulu, Zet Cas, ζ Cas, 17 Cassiopeiae, BD+53°105, FK5 17, GC 727, HD 3360, HIP 2920, HR 153, SAO 21566[8] | |
| Database references | |
| SIMBAD | data |
Zeta Cassiopeiae, Latinized from ζ Cassiopeiae, and officially named Fulu /ˈfuːluː/,[9] is a variable star[8] in the constellation of Cassiopeia. It has a blue-white hue and is classified as a B-type subgiant with an apparent magnitude of +3.66. Based upon parallax measurements, it is approximately 590 light-years from the Sun.
- ^ a b c d e Cite error: The named reference
aaa474_2_653was invoked but never defined (see the help page). - ^ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
- ^ a b c d Neiner, C.; Geers, V. C.; Henrichs, H. F.; Floquet, M.; Frémat, Y.; Hubert, A.-M.; Preuss, O.; Wiersema, K. (2003). "Discovery of a magnetic field in the Slowly Pulsating B star zeta Cassiopeiae" (PDF). Astronomy and Astrophysics. 406 (3): 1019. Bibcode:2003A&A...406.1019N. doi:10.1051/0004-6361:20030742.
- ^ Cite error: The named reference
araa11_29was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
clpl4was invoked but never defined (see the help page). - ^ Jaschek, C.; Gomez, A. E. (1998). "The absolute magnitude of the early type MK standards from HIPPARCOS parallaxes". Astronomy and Astrophysics. 330: 619. Bibcode:1998A&A...330..619J.
- ^ Cite error: The named reference
spj1_387_673was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
SIMBADwas invoked but never defined (see the help page). - ^ "Naming Stars". IAU.org. Retrieved 16 December 2017.
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