Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Carina |
Right ascension | 10h 20m 21.608s [1] |
Declination | −60° 27′ 15.55″ [1] |
Apparent magnitude (V) | 7.4 - 9.0 [2] |
Characteristics | |
Evolutionary stage | Red supergiant |
Spectral type | M4.5Ia [3] [4] |
U−B color index | +2.34 [5] |
B−V color index | +2.20 [5] |
Variable type | SRc [6] [2] [7] |
Astrometry | |
Radial velocity (Rv) | 2.0 [8] km/s |
Proper motion (μ) | RA: -7.615 mas/yr [9] Dec.: 2.051 mas/yr [9] |
Parallax (π) | 0.4143 ± 0.0403 mas [9] |
Distance | 2,960+220 −200 [10] pc |
Absolute magnitude (MV) | −5.24 [5] |
Details | |
Radius | 1,168 [11] R☉ |
Luminosity (bolometric) | 288,400+5,300 −7,400 [10] L☉ |
Temperature | 3,535±170 [12] K |
Metallicity [Fe/H] | +0.25 [13] dex |
Other designations | |
Database references | |
SIMBAD | data |
EV Carinae is a red supergiant and pulsating variable star of spectral type M4Ia in the constellation Carina. It is a semiregular variable star with its apparent magnitude varying between 7.4 and 9.0 in the visible band, making it only seen by binoculars or a telescope. Various periods have been identified, but the dominant one is around 347 days. [6] It is an MK spectral standard star for the class M4.5Ia. [4]
EV Car is one of the largest known stars although its properties depend on its distance. In the late of the 20th century, EV Carinae, based on an assumed distance of 4.2 kpc, was found to be an extremely luminous and large supergiant star with an unusual luminosity between 550,000 and 675,000 times that of the Sun (L☉), which would imply radii of 2,880 to 3,190 times the Sun's radius (R☉) at a temperature of 2,930 K, making it larger than the orbit of Saturn. [15]
More recently, new calculations of the distance derived closer distances below 3 kpc which would put EV Car part of the Carina OB2 association along the Carina Nebula and give the star lower luminosities below 300,000 L☉, higher temperatures, and correspondingly lower radius values, [11] [5] [10] while calculation of the bolometric luminosity based on a Gaia Data Release 2 parallax of 0.7759±0.1098 mas gives a luminosity below 50,000 L☉ with a corresponding radius of 574 R☉, but that value is considered unreliable due to a very high level of astrometric noise. [12]
KW Sagittarii is a red supergiant star, located approximately 2,160 parsecs away from the Sun in the direction of the constellation Sagittarius. It is one of the largest known stars, with a diameter about 1,000 times larger than the Sun. If placed at the center of the Solar System, the star's surface would engulf Mars, coming close to Jupiter's orbit.
V354 Cephei is a red supergiant star located within the Milky Way. It is an irregular variable located over 13,000 light-years away from the Sun. It has an estimated radius of 1,139 solar radii. If it were placed in the center of the Solar System, it would extend to between the orbits of Mars and Jupiter.
NO Aurigae is a pulsating variable star in the constellation Auriga. It is an unusually-luminous asymptotic giant branch star about 3,500 light years away.
V381 Cephei is a triple star system in the northern constellation of Cepheus. Its apparent magnitude is slightly variable between 5.5 and 5.7.
V602 Carinae is a red supergiant and variable star of spectral type M3 in the constellation Carina. It is considered to be one of largest known stars, being around 1,000 times larger than the Sun.
TZ Cassiopeiae(TZ Cas, HIP 117763, SAO 20912) is a variable star in the constellation Cassiopeia with an apparent magnitude of around +9 to +10. It is approximately 8,400 light-years away from Earth. The star is a red supergiant star with a spectral type of M3 and a temperature around 3,600 K.
PZ Cassiopeiae is a red supergiant star located in the constellation of Cassiopeia, and a semi-regular variable star.
Sigma Ophiuchi, Latinized from σ Ophiuchi, is a single, orange-hued star in the equatorial constellation Ophiuchus. Its apparent visual magnitude is 4.31, which is bright enough to be faintly visible to the naked eye. The annual parallax shift of 3.62 mas as seen from Earth provides a distance estimate of roughly 900 light years. It is moving closer to the Sun with a radial velocity of −28 km/s.
UY Scuti (BD-12°5055) is a red supergiant star, located 5,900 light-years away in the constellation Scutum. It is also a pulsating variable star, with a maximum brightness of magnitude 8.29 and a minimum of magnitude 10.56, which is too dim for naked-eye visibility. It is considered to be one of the largest known stars, with a radius estimated at 909 solar radii, thus a volume of 750 million times that of the Sun. This estimate implies if it were placed at the center of the Solar System, its photosphere would extend past the orbit of Mars or even the asteroid belt.
AH Scorpii is a red supergiant variable star located in the constellation Scorpius. It is one of the largest stars known by radius and is also one of the most luminous red supergiant stars in the Milky Way.
RS Persei is a red supergiant variable star located in the Double Cluster in Perseus. The star's apparent magnitude varies from 7.82 to 10.0, meaning it is never visible to the naked eye.
Y Lyncis is a semiregular variable star in the constellation Lynx. It is an asymptotic giant branch star of spectral type M6S, with a luminosity class of Ib, indicating a supergiant luminosity. It is around 1,160 light years away.
TV Geminorum is a variable red supergiant in the constellation Gemini. Its visual magnitude varies from 6.3 to 7.5.
BC Cygni is a red supergiant and pulsating variable star of spectral type M3.5Ia in the constellation Cygnus.
V528 Carinae is a variable star in the constellation Carina.
BO Carinae, also known as HD 93420, is an irregular variable star in the constellation Carina.
IX Carinae is a red supergiant and pulsating variable star of spectral type M2Iab in the constellation Carina. It is a member of the Carina OB1 association along the Carina Nebula.
MZ Puppis is a red supergiant star in the constellation of Puppis. It has a radius of 400 R☉.
V538 Carinae is a variable star in the constellation of Carina, and a possible red supergiant. It is located around 15,000 light-years from Earth. The negative radial velocity of -1.85 km/s show that it is slowly moving towards Earth.
Y Tauri is a carbon star located in the constellation Taurus. Parallax measurements by Gaia put it at a distance of approximately 2,170 light-years.