Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Carina |
Right ascension | 11h 12m 36.01358s [1] |
Declination | −60° 19′ 03.4516″ [1] |
Apparent magnitude (V) | 4.59 [2] |
Characteristics | |
Evolutionary stage | Blue supergiant |
Spectral type | A5Iae: [3] |
U−B color index | +0.08 [4] |
B−V color index | +0.52 [4] |
Variable type | α Cyg [5] |
Astrometry | |
Radial velocity (Rv) | −8.40 [6] km/s |
Proper motion (μ) | RA: −5.68 [1] mas/yr Dec.: 2.15 [1] mas/yr |
Parallax (π) | 1.18 ± 0.83 mas [7] |
Distance | 12,700 ly (3,900 [8] pc) |
Absolute magnitude (MV) | −7.9 [9] |
Details | |
Mass | 17 [10] M☉ |
Radius | 141.5 [10] R☉ |
Luminosity | 96,000 [10] L☉ |
Temperature | 8,330 [10] K |
Rotational velocity (v sin i) | 34 [10] km/s |
Other designations | |
Database references | |
SIMBAD | data |
V533 Carinae (V533 Car, y Car, y Carinae) is a A-type supergiant and a Alpha Cygni variable star with a mean apparent magnitude of +4.59 in the constellation Carina. It is located at a distance of about 13,000 light years. [8] It is visible to the naked eye outside of brightly-lit urban areas.
V533 Carinae is found near the Carina Nebula on the edge of the constellation Carina towards Crux. It is a member of Collinder 240, [9] a sparse open cluster sometimes considered to be a portion of the richer nearby cluster NGC 3572. Together with the small clusters Hogg 10 and 11, they are all part of the Carina OB2 stellar association. [11]
V533 Carinae is the brightest star in the region. The other bright stars in NGC 3572 are hot young stars such as HD 97166 and all the clusters in the region are only a few million years old. [12]
V533 Carinae is classified as a double star with the companion being a magnitude 11.5 star 21.7 arc-seconds away. [13]
V533 Carinae was one of many small amplitude variable stars detected from an analysis of Hipparcos photometry. It was granted its variable star designation in 1999 as a batch of 2,675 new variables. [15] It is classified as an Alpha Cygni type variable and its brightness varies from magnitude +4.69 to +4.75 as measured on the Hipparcos photometric scale. [5] A period of 1.58499 days and an average visual amplitude of 0.0146 magnitudes are quoted although the variations are not strictly regular. [2]
V533 Carinae is a bright supergiant with a luminosity around 100,000 times that of the sun. The temperature is over 8,000 K and the radius around 140 R☉. Its equatorial rotation is more than 15 times faster than the sun's.
Prior to 1971, it was always classified with an early or mid F-type spectral type, but since then has always been given a mid or late A class. [4] [16]
V399 Carinae is a variable star in the constellation Carina. It is visible to the naked eye.
V382 Carinae, also known as x Carinae, is a yellow hypergiant in the constellation Carina. It is a G-type star with a mean apparent magnitude of +3.93, and a variable star of low amplitude.
HD 96919, also known by its Bayer designation of z2 Carinae and the variable star designation of V371 Carinae, is a blue supergiant star in the constellation Carina. It lies near the Carina Nebula and at a comparable distance. A 5th magnitude star, it is visible to the naked eye under good observing conditions.
Omicron1 Centauri is a star in the constellation Centaurus. It is approximately 10,000 light years from Earth, though this is very uncertain.
HD 93205, or V560 Carinae, is a binary stellar system, in the Carina Nebula in the constellation Carina. It consists of two massive O-stars that revolve around each other in 6 days.
DL Crucis is a variable star in the constellation Crux.
μ Normae, Latinised as Mu Normae, is a blue supergiant star of spectral type O9.7 Iab, located in the constellation of Norma.
RT Carinae, also known as CD-58 3538, is a red supergiant and a variable star, located 7,000 light years away in the constellation Carina. It is in the Carina Nebula. The average apparent magnitude of +8.55, too faint to be visible to the naked eye.
WR 24 is a Wolf-Rayet star in the constellation Carina. It is one of the most luminous stars known. At the edge of naked eye visibility it is also one of the brightest Wolf Rayet stars in the sky.
V1073 Scorpii is a variable star in the constellation Scorpius. It has a non-Greek Bayer designation of k Scorpii. The star has a blue-white hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around +4.87. Parallax measurements yield a distance estimate of approximately 2,920 ly (896 pc) from the Sun, and it is drifting further away with a radial velocity of +7 km/s. It has an absolute magnitude of −6.8
10 Persei is a blue supergiant star in the constellation Perseus. Its apparent magnitude is 6.26 although it is slightly variable.
3 Geminorum is a blue supergiant star in the constellation Gemini. It is a small amplitude pulsating variable and a close double star, with a mean combined apparent visual magnitude of about 5.7.
HD 65750, also known as V341 Carinae is a bright red giant star in the constellation Carina. It is surrounded by a prominent reflection nebula, known as IC 2220, nicknamed the Toby Jug Nebula.
V520 Persei is a blue supergiant member of NGC 869, one of the Perseus Double Cluster open clusters. It is an irregular variable star. At a magnitude of 6.55, V520 Persei is the brightest member in either NGC 869 or NGC 884, although the brighter HD 13994 lies in the foreground along the same line of sight.
HR 4887 is a suspected variable star in the open cluster NGC 4755, which is also known as the Kappa Crucis Cluster or Jewel Box Cluster.
DS Crucis is a variable star near the open cluster NGC 4755, which is also known as the Kappa Crucis Cluster or Jewel Box Cluster. It is in the constellation Crux.
BU Crucis is a variable star in the open cluster NGC 4755, which is also known as the Kappa Crucis Cluster or Jewel Box Cluster.
BO Carinae, also known as HD 93420, is an irregular variable star in the constellation Carina.
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.
GG Carinae is a binary star system in the southern constellation of Carina, abbreviated GG Car. It is a variable star with a brightness that fluctuates around an apparent visual magnitude of 8.67, making it too faint to be visible to the naked eye. The distance to this system is approximately 8,000 light years based on parallax measurements.