Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 50m 35.05979s [1] |
Declination | 38° 19′ 07.1080″ [1] |
Apparent magnitude (V) | 4.22 [2] |
Characteristics | |
Spectral type | F2III [3] |
U−B color index | +0.08 [4] |
B−V color index | +0.34 [4] |
Variable type | δ Sct(?) [5] [6] |
Astrometry | |
Radial velocity (Rv) | +14.00 [7] km/s |
Proper motion (μ) |
RA: +195.77
[1]
mas/
yr Dec.: −109.98 [1] mas/ yr |
Parallax (π) | 27.01 ± 0.19 mas [1] |
Distance | 120.8 ± 0.8
ly (37.0 ± 0.3 pc) |
Absolute magnitude (MV) | 1.38 [2] |
Details | |
Mass | 1.80 [8] M☉ |
Radius | 3.2 [9] R☉ |
Luminosity | 23.36 [2] L☉ |
Surface gravity (log g) | 3.72 [10] cgs |
Temperature | 7,004 [10] K |
Metallicity [Fe/H] | −0.04 [2] dex |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 1.44 [8] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
16 Persei is a single, [12] suspected variable star [6] in the northern constellation of Perseus, located approximately 121 light years away based on parallax. [1] It is visible to the naked eye as a yellow-white hued star with an apparent visual magnitude of 4.22. [2] This object is moving further from the Earth with a heliocentric radial velocity of +14 km/s. [7] It displays a relatively high proper motion, traversing the celestial sphere at the rate of 0.224 ″ per year. [13]
Based upon a stellar classification of F2 III, [3] this matches an aging giant star that has exhausted the hydrogen at its core and is evolving away from the main sequence. It is a possible pulsating Delta Scuti variable, although there is some uncertainty about this classification. [6] However, Kunzli and North (1998) found no variation. [14] The star is 1.44 [8] billion years old with 1.8 [8] times the mass of the Sun and 3.2 [9] times the Sun's radius. It shows a high rotation rate with a projected rotational velocity of 149 km/s, [3] which is causing an equatorial bulge that is an estimated 24% larger than the polar radius. [15] 16 Persei is radiating 23 [2] times the Sun's luminosity from its photosphere at an effective temperature of 7,004 K. [10]
It has two reported visual companions: B, with magnitude 12.8 and separation 76.7", and C, with magnitude 10.43 and separation 234". [16]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 50m 35.05979s [1] |
Declination | 38° 19′ 07.1080″ [1] |
Apparent magnitude (V) | 4.22 [2] |
Characteristics | |
Spectral type | F2III [3] |
U−B color index | +0.08 [4] |
B−V color index | +0.34 [4] |
Variable type | δ Sct(?) [5] [6] |
Astrometry | |
Radial velocity (Rv) | +14.00 [7] km/s |
Proper motion (μ) |
RA: +195.77
[1]
mas/
yr Dec.: −109.98 [1] mas/ yr |
Parallax (π) | 27.01 ± 0.19 mas [1] |
Distance | 120.8 ± 0.8
ly (37.0 ± 0.3 pc) |
Absolute magnitude (MV) | 1.38 [2] |
Details | |
Mass | 1.80 [8] M☉ |
Radius | 3.2 [9] R☉ |
Luminosity | 23.36 [2] L☉ |
Surface gravity (log g) | 3.72 [10] cgs |
Temperature | 7,004 [10] K |
Metallicity [Fe/H] | −0.04 [2] dex |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 1.44 [8] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
16 Persei is a single, [12] suspected variable star [6] in the northern constellation of Perseus, located approximately 121 light years away based on parallax. [1] It is visible to the naked eye as a yellow-white hued star with an apparent visual magnitude of 4.22. [2] This object is moving further from the Earth with a heliocentric radial velocity of +14 km/s. [7] It displays a relatively high proper motion, traversing the celestial sphere at the rate of 0.224 ″ per year. [13]
Based upon a stellar classification of F2 III, [3] this matches an aging giant star that has exhausted the hydrogen at its core and is evolving away from the main sequence. It is a possible pulsating Delta Scuti variable, although there is some uncertainty about this classification. [6] However, Kunzli and North (1998) found no variation. [14] The star is 1.44 [8] billion years old with 1.8 [8] times the mass of the Sun and 3.2 [9] times the Sun's radius. It shows a high rotation rate with a projected rotational velocity of 149 km/s, [3] which is causing an equatorial bulge that is an estimated 24% larger than the polar radius. [15] 16 Persei is radiating 23 [2] times the Sun's luminosity from its photosphere at an effective temperature of 7,004 K. [10]
It has two reported visual companions: B, with magnitude 12.8 and separation 76.7", and C, with magnitude 10.43 and separation 234". [16]