HD 88836
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Antlia[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 6.32±0.01[3] |
| Characteristics | |
| Evolutionary stage | red giant branch[2] |
| Spectral type | G8 III[4] |
| B−V Template:Engvar | +0.94[5] |
| Astrometry | |
| Radial velocity (Rv) | 0±0.4[6] km/s |
| Proper motion (μ) | RA: −30.210 mas/yr[2] Dec.: −8.448 mas/yr[2] |
| Parallax (π) | 7.0190±0.0167 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +0.61[1] |
| Details[7] | |
| Mass | 2.32±0.13 Template:Solar mass |
| Radius | 9.96±0.15 Template:Solar radius |
| Luminosity | 58.3±1.0 Template:Solar luminosity |
| Surface gravity (log g) | 2.78±0.06 cgs |
| Temperature | 5,055±32 K |
| Metallicity [Fe/H] | −0.02±0.03 dex |
| Rotational velocity (v sin i) | 1.6±1.2[8] km/s |
| Age | 619[2] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[9] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
HD 88836, also known as HR 4019, is a solitary, yellow-hued star located in the southern constellation Antlia. It has an apparent magnitude of 6.32,[3] placing it near the limit for naked eye visibility. Based on an annual parallax shift of Script error: No such module "val"., the object is estimated to be 465 light years away from the Solar System.[2] Its distance from the Sun does not appear to be changing, having a radial velocity of Script error: No such module "val"..[6]
HD 88836 has a stellar classification of G8 III,[4] indicating that it is an evolved red giant. Gaia Data Release 3 stellar evolution models place it on the red giant branch.[2] At present it has 2.3 times the mass of the Sun but has expanded to 10 times its girth.[7] It shines with a luminosity of Template:Solar luminosity from its enlarged photosphere at an effective temperature of Script error: No such module "val"..[7] HD 88836 metallicity – what astronomers dub as a star's abundance of elements heavier than helium – is around solar level.[7] Like most giants, the object spins slowly, having a projected rotational velocity of Script error: No such module "val"..[8]
There is a 13th magnitude companion located Script error: No such module "val". away along a position angle of Script error: No such module "val".,[10] which was first noticed by R.A. Rossiter in 1912. It is unknown if its physically related to HD 88836 or not, although its Gaia Data Release 3 parallax is much smaller than HD 88836's.[11]
References
<templatestyles src="Reflist/styles.css" />
- ↑ a b Template:Cite XHIP
- ↑ a b c d e f g h Template:Cite DR3
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b c d Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "Citation/CS1".
- ↑ Template:Cite Gaia DR3
<ref> tag with name "Gould1879" defined in <references> is not used in prior text.Script error: No such module "Check for unknown parameters".