ζ Cassiopeiae is found just south of the W asterism
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.
^ abcdeCite error: The named reference aaa474_2_653 was 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.
^ abcdNeiner, 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_29 was invoked but never defined (see the help page).
^ abCite error: The named reference clpl4 was 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_673 was invoked but never defined (see the help page).
^ abCite error: The named reference SIMBAD was invoked but never defined (see the help page).
^"Naming Stars". IAU.org. Retrieved 16 December 2017.
ZetaCassiopeiae, Latinized from ζ Cassiopeiae, and officially named Fulu /ˈfuːluː/, is a variable star in the constellation of Cassiopeia. It has a blue-white...
the disappearance of, the "shell" are called Gamma Cassiopeiae variables. Pleione and Gamma Cassiopeiae itself are both variable stars that have intermittent...
A Gamma Cassiopeiae variable (γ Cassiopeiae variable) is a type of variable star, named for its prototype γ Cassiopeiae. γ Cassiopeiae variables show irregular...
Lǎo Rén Old Man Alpha Carinae Canopus Carina 附路 Fù Lù Auxiliary Road ZetaCassiopeiae Fulu Cassiopeia A single-star asterism in the Legs mansion. Fù Lù became...
Zeta Ophiuchi (ζ Oph, ζ Ophiuchi) is a single star located in the constellation of Ophiuchus. It has an apparent visual magnitude of 2.6, making it the...
Cassiopeiae variable, but it may not be either. Hrvoje Božić and Krešimer Pavlovski, of Hvar Observatory in Croatia, monitored the brightness of Zeta...
star in the northern constellation of Cassiopeia, positioned near ZetaCassiopeiae. This object has a blue-white hue and is dimly visible to the naked...
variable star 2.23 Alpha Cassiopeiae Star 2.230 Gamma Draconis Star 2.24 2.21 Alpha Coronae Borealis Binary star system 2.25 2.24 Zeta Puppis Star 2.26 2.23...
a supergiant companion. V1768 Cygni V2140 Cygni V4030 Sagittarii 6 CassiopeiaeZeta¹ Scorpii In Galactic Center Region: Star 13, type O, LBV candidate...
Eta (Aludra) at 2.4 and Omicron2 at 3.0, and white spectroscopic binary Zeta (Furud), also at 3.0. The red hypergiant VY CMa is one of the largest stars...
multiple stars, such as Regulus, Rasalhague, Altair, Alderamin and Beta Cassiopeiae to measure the flattened shape of these rapidly rotating stars. Because...
Cygni — suddenly brightened in the 17th century WNC4 — Messier Object 40 Zeta Boötis — speckle binary test system Lists of astronomical objects Astronomical...
1600. Tycho's Star (SN 1572), another "temporary star", appears as B Cassiopeiae. In charts for constellations that did not exhaust the Greek letters...
Iota Draconis, Theta Draconis, Eta Draconis, Zeta Draconis, Upsilon Draconis, 73 Draconis and 23 Cassiopeiae. A planet orbiting Gamma Cephei A with a 2...
variations are slight, Gomeisa is classified as a shell star (Gamma Cassiopeiae variable), with a maximum magnitude of 2.84 and a minimum magnitude of...
"Hubble Space Telescope Astrometry of the Metal-poor Visual Binary μ Cassiopeiae: Dynamical Masses, Helium Content, and Age". The Astrophysical Journal...
Tabetha S.; et al. (August 2008). "Angular Diameters of the G Subdwarf µ Cassiopeiae A and the K Dwarfs s Draconis and HR 511 from Interferometric Measurements...
ṣadr "chest", the same word which gave rise to the star Schedar (Alpha Cassiopeiae). In 2016, the International Astronomical Union organized a Working Group...
needed] Zeta-1 Scorpii (naked-eye hypergiant) IRC+10420 (yellow hypergiant that has increased its temperature into the LBV range) V509 Cassiopeiae (= HR...
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