Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Carina |
Right ascension | 07h 56m 50.94795s[1] |
Declination | −59° 07′ 32.7605″[1] |
Apparent magnitude (V) | 6.2 - 7.1[2] |
Characteristics | |
Spectral type | M1 II[3] |
U−B color index | +2.18[4] |
B−V color index | +1.93[4] |
Variable type | LB[5] |
Astrometry | |
Radial velocity (Rv) | 23.17 km/s |
Proper motion (μ) | RA: -4.030[6] mas/yr Dec.: 9.789[6] mas/yr |
Parallax (π) | 2.6230 ± 0.0931 mas[6] |
Distance | 1,240 ± 40 ly (380 ± 10 pc) |
Details | |
Mass | 1.11[7] M☉ |
Radius | 103[6] R☉ |
Luminosity | 1,698[6] L☉ |
Surface gravity (log g) | 0.31[7] cgs |
Temperature | 3,650[6] K |
Metallicity [Fe/H] | -0.4[8] dex |
Other designations | |
Database references | |
SIMBAD | data |
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,[10][9] known as IC 2220, nicknamed the Toby Jug Nebula.
HD 65750 is located about 900 light years away, and has an apparent magnitude that varies between 6.2 and 7.1 and a metallicity just 40% of the Sun. It is part of the Diamond Cluster moving group.
The star has a radial velocity of 20 km/s.[12]
The nebulae is a mystery as the variations in nebulae brightness appear to be unrelated to the host star.[13] One theory is that rather than being an accreting protoplanetary disk the star may be an evolved star that is losing material.[14][15]