Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cygnus |
Right ascension | 19h 27m 25.96022s [1] |
Declination | 52° 19′ 13.5871″ [1] |
Apparent magnitude (V) | 5.73 [2] |
Characteristics | |
Evolutionary stage | main sequence [3] |
Spectral type | A1V [4] |
B−V color index | −0.002±0.002 [2] |
Astrometry | |
Radial velocity (Rv) | +1.90 [5] km/s |
Proper motion (μ) |
RA: -12.639
[1]
mas/
yr Dec.: -27.567 [1] mas/ yr |
Parallax (π) | 8.4332 ± 0.0867 mas [1] |
Distance | 387 ± 4
ly (119 ± 1 pc) |
Absolute magnitude (MV) | +0.57 [2] |
Details | |
Mass | 2.59±0.03 [3] M☉ |
Luminosity | 74.1+11.0 −20.5 [6] L☉ |
Surface gravity (log g) | 4.18 [6] cgs |
Temperature | 9,683+89 −178 [3] K |
Rotational velocity (v sin i) | 51.6±2.2 [6] km/s |
Age | 404 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Iota1 Cygni, Latinized from ι1 Cygni, is a probable binary star [6] system in the northern constellation Cygnus, and is separated by less than a degree from its brighter visual neighbor, Iota2 Cygni. [9] It is near the lower limit of visibility to the naked eye with an apparent visual magnitude of 5.75. [8] The system is located approximately 387 light years away based on parallax, [1] and it is drifting further away with a radial velocity of +2 km/s. [5]
This is a candidate double-lined spectroscopic binary system. [6] It has a stellar classification of A1V, [4] suggesting the primary component is an A-type main-sequence star. The star is about 400 [7] million years old with a moderate rotation rate, showing a projected rotational velocity of 52 km/s. [6] It has 2.6 [3] times the mass of the Sun and is radiating 74 [6] times the Sun's luminosity from its photosphere at an effective temperature of 9,683 K. [3]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cygnus |
Right ascension | 19h 27m 25.96022s [1] |
Declination | 52° 19′ 13.5871″ [1] |
Apparent magnitude (V) | 5.73 [2] |
Characteristics | |
Evolutionary stage | main sequence [3] |
Spectral type | A1V [4] |
B−V color index | −0.002±0.002 [2] |
Astrometry | |
Radial velocity (Rv) | +1.90 [5] km/s |
Proper motion (μ) |
RA: -12.639
[1]
mas/
yr Dec.: -27.567 [1] mas/ yr |
Parallax (π) | 8.4332 ± 0.0867 mas [1] |
Distance | 387 ± 4
ly (119 ± 1 pc) |
Absolute magnitude (MV) | +0.57 [2] |
Details | |
Mass | 2.59±0.03 [3] M☉ |
Luminosity | 74.1+11.0 −20.5 [6] L☉ |
Surface gravity (log g) | 4.18 [6] cgs |
Temperature | 9,683+89 −178 [3] K |
Rotational velocity (v sin i) | 51.6±2.2 [6] km/s |
Age | 404 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Iota1 Cygni, Latinized from ι1 Cygni, is a probable binary star [6] system in the northern constellation Cygnus, and is separated by less than a degree from its brighter visual neighbor, Iota2 Cygni. [9] It is near the lower limit of visibility to the naked eye with an apparent visual magnitude of 5.75. [8] The system is located approximately 387 light years away based on parallax, [1] and it is drifting further away with a radial velocity of +2 km/s. [5]
This is a candidate double-lined spectroscopic binary system. [6] It has a stellar classification of A1V, [4] suggesting the primary component is an A-type main-sequence star. The star is about 400 [7] million years old with a moderate rotation rate, showing a projected rotational velocity of 52 km/s. [6] It has 2.6 [3] times the mass of the Sun and is radiating 74 [6] times the Sun's luminosity from its photosphere at an effective temperature of 9,683 K. [3]