Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Vulpecula |
Right ascension | 19h 28m 57.08327s [1] |
Declination | 24° 46′ 07.2656″ [1] |
Apparent magnitude (V) | 5.82 [2] |
Characteristics | |
Spectral type | K0 III [3] |
B−V color index | 1.023±0.005 [2] |
Astrometry | |
Radial velocity (Rv) | −28.58±0.20 [2] km/s |
Proper motion (μ) |
RA: 8.750
[1]
mas/
yr Dec.: 16.334 [1] mas/ yr |
Parallax (π) | 7.1397 ± 0.0739 mas [1] |
Distance | 457 ± 5
ly (140 ± 1 pc) |
Absolute magnitude (MV) | −0.16 [2] |
Details | |
Mass | 3.07 [4] M☉ |
Radius | 13.8+0.2 −0.4 [1] R☉ |
Luminosity | 100.5±1.3 [1] L☉ |
Surface gravity (log g) | 2.63 [4] cgs |
Temperature | 4,915+71 −30 [1] K |
Metallicity [Fe/H] | +0.11 [4] dex |
Age | 324 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
8 Vulpeculae is star located about 457 [1] light years away in the northern constellation of Vulpecula. [6] It lies just 7 ′ from Alpha Vulpeculae and the two form an optical double. [7] 8 Vulpeculae is visible to the naked eye as a faint, yellow-orange hued star with an apparent visual magnitude of 5.82. It is moving closer to the Earth with a heliocentric radial velocity of −29 km/s. [2]
This is an aging giant star with a stellar classification of K0 III, [3] which indicates it has exhausted the hydrogen supply at its core and evolved away from the main sequence. It is 324 [5] million years old with three [4] times the mass of the Sun and has expanded to 14 [1] times the Sun's radius. The star is radiating 100 [1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,915 K. [1]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Vulpecula |
Right ascension | 19h 28m 57.08327s [1] |
Declination | 24° 46′ 07.2656″ [1] |
Apparent magnitude (V) | 5.82 [2] |
Characteristics | |
Spectral type | K0 III [3] |
B−V color index | 1.023±0.005 [2] |
Astrometry | |
Radial velocity (Rv) | −28.58±0.20 [2] km/s |
Proper motion (μ) |
RA: 8.750
[1]
mas/
yr Dec.: 16.334 [1] mas/ yr |
Parallax (π) | 7.1397 ± 0.0739 mas [1] |
Distance | 457 ± 5
ly (140 ± 1 pc) |
Absolute magnitude (MV) | −0.16 [2] |
Details | |
Mass | 3.07 [4] M☉ |
Radius | 13.8+0.2 −0.4 [1] R☉ |
Luminosity | 100.5±1.3 [1] L☉ |
Surface gravity (log g) | 2.63 [4] cgs |
Temperature | 4,915+71 −30 [1] K |
Metallicity [Fe/H] | +0.11 [4] dex |
Age | 324 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
8 Vulpeculae is star located about 457 [1] light years away in the northern constellation of Vulpecula. [6] It lies just 7 ′ from Alpha Vulpeculae and the two form an optical double. [7] 8 Vulpeculae is visible to the naked eye as a faint, yellow-orange hued star with an apparent visual magnitude of 5.82. It is moving closer to the Earth with a heliocentric radial velocity of −29 km/s. [2]
This is an aging giant star with a stellar classification of K0 III, [3] which indicates it has exhausted the hydrogen supply at its core and evolved away from the main sequence. It is 324 [5] million years old with three [4] times the mass of the Sun and has expanded to 14 [1] times the Sun's radius. The star is radiating 100 [1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,915 K. [1]