Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 04h 36m 41.43017s [1] |
Declination | +41° 15′ 53.3213″ [1] |
Apparent magnitude (V) | 4.26 [2] |
Characteristics | |
Spectral type | K1II + B7V [3] |
U−B color index | +0.81 [2] |
B−V color index | +1.24 [2] |
Astrometry | |
Radial velocity (Rv) | +9.80 [4] km/s |
Proper motion (μ) | RA: −4.56 [1] mas/yr Dec.: −17.84 [1] mas/yr |
Parallax (π) | 4.09 ± 0.38 mas [1] |
Distance | 800 ± 70 ly (240 ± 20 pc) |
Absolute magnitude (MV) | -2.67 [5] |
Orbit [6] | |
Primary | 58 Persei A |
Companion | 58 Persei B |
Period (P) | 28.8 yr |
Semi-major axis (a) | 0.051″ |
Eccentricity (e) | 0.64 |
Inclination (i) | 81° |
Longitude of the node (Ω) | 237° |
Periastron epoch (T) | 1978.65 |
Argument of periastron (ω) (secondary) | 191° |
Details | |
58 Per A | |
Mass | 6.8±0.2 [7] M☉ |
Radius | 70.71±6.67 [8] R☉ |
Luminosity | 1,731±323 [8] L☉ |
Surface gravity (log g) | 2.21 [9] cgs |
Temperature | 4,500 [8] K |
Metallicity [Fe/H] | −0.20 [5] dex |
Rotational velocity (v sin i) | 11.0 [10] km/s |
Age | 50.1±6.8 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
58 Persei is a binary [3] and possibly a triple [12] star system in the northern constellation of Perseus. It has the Bayer designation e Persei, while 58 Persei is the Flamsteed designation. This system is visible to the naked eye as a faint point of light with an apparent visual magnitude of 4.26. [2] It is approximately 800 light years away from the Sun based on parallax, [1] and is drifting further away with a radial velocity of +10 km/s. [4]
This is a single-lined spectroscopic binary system with an orbital period of 28.7 years and an eccentricity of 0.65. [13] The primary member, designated component A, is an orange-hued (K–type) bright giant with a stellar classification of K1II. [3] The star is around 50 [7] million years old with 7 [7] times the mass of the Sun. Having exhausted the supply of hydrogen at its core, it has expanded to roughly 71 times the Sun's radius. It is radiating 1,731 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,500 K. [8]
The secondary, component B, appears to be a B-type main-sequence star with a stellar classification of B7V. [3] It is a suspected binary of unknown period with component masses of 3.3 and 1.2 times the mass of the Sun. [12]
π Persei, Latinized as Pi Persei, is a single star in the northern constellation of Perseus. It has the traditional name Gorgonea Secunda, the second of three Gorgons in the mythology of the hero Perseus. This star has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.7. It is located at a distance of approximately 303 light years from the Sun based on parallax, and is moving further away with a radial velocity of +14 km/s.
ν Persei, Latinized as Nu Persei, is a single star and a suspected variable in the northern constellation of Perseus. It has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 3.80. This object is located approximately 560 light-years from the Sun based on parallax but is drifting closer with a radial velocity of −12 km/s.
29 Vulpeculae is a suspected astrometric binary star system in the northern constellation Vulpecula. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.82. The system lies approximately 209 light years away from the Sun based on parallax, and is a member of the IC 2391 supercluster. It is moving closer to the Earth with a heliocentric radial velocity of −17 km/s.
γ Monocerotis, Latinised as Gamma Monocerotis, is a binary star system in the equatorial constellation of Monoceros. Based upon an annual parallax shift of 6.55 mas, it is located roughly 500 light years from the Sun. It can be viewed with the naked eye, having an apparent visual magnitude of 3.96. Gamma Monocerotis is moving away from the Sun with a radial velocity of −5 km/s.
Nu Cygni, Latinized from ν Cygni, is a binary star system in the constellation Cygnus. Its apparent magnitude is 3.94 and it is approximately 374 light years away based on parallax. The brighter component is a magnitude 4.07 A-type giant star with a stellar classification of A0III n, where the 'n' indicates broad "nebulous" absorption lines due to rapid rotation. This white-hued star has an estimated 3.6 times the mass of the Sun and about 1.9 times the Sun's radius. It is radiating 412 times the Sun's luminosity from its photosphere at an effective temperature of 9,462 K. The magnitude 6.4 companion has an angular separation of 0.24" from the primary.
Sigma Persei is an orange K-type giant with an apparent magnitude of +4.36. It is approximately 360 light years from Earth.
λ Persei, Latinized as Lambda Persei, is a star in the northern constellation of Perseus. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.29. This object is located approximately 422 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +6 km/s.
48 Persei is a Be star in the constellation Perseus, approximately the 500th brightest of the visible stars in apparent magnitude. It is "well known for its complex spectrum and for its light and velocity variations". The name "48 Persei" is a Flamsteed designation given to it by John Flamsteed in his catalogue, published in 1712.
32 Orionis is a triple star system in the equatorial constellation of Orion. It has the Bayer designation A Orionis, while 32 Orionis is the Flamsteed designation. This system is visible to the naked eye as a faint point of light with a combined apparent visual magnitude of 4.20. It is located approximately 303 light-years away from the Sun based on parallax, and is drifting further away with a radial velocity of +18.6 km/s.
22 Orionis is a binary star in the equatorial constellation of Orion. It has the Bayer designation o Orionis, while 22 Orionis is the Flamsteed designation. This system is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 4.74. It is located approximately 1,100 light years away from the Sun based on parallax. The system is moving further from the Earth with a heliocentric radial velocity of +28.80
Rho Pegasi, Latinized from ρ Pegasi, is a star in the northern constellation of Pegasus, near the southern constellation boundary with Pisces. This is a probable astrometric binary system, as determined by changes to the proper motion of the visible component. It has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.90. The system is located at a distance of approximately 274 light years from the Sun based on parallax, but it is drifting closer with a radial velocity of −10.6 km/s.
17 Persei is a single star in the northern constellation of Perseus, located about 420 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.53. This object is moving further from the Earth at a heliocentric radial velocity of +13 km/s.
34 Persei is a binary star system in the northern constellation of Perseus. It is visible to the naked eye as a faint, blue-white hued point of light with a combined apparent visual magnitude of 4.67. The system is located approximately 540 light years away from the Sun based on parallax, but it is drifting closer with a radial velocity of −3.5 km/s. It is a likely member of the Alpha Persei Cluster.
40 Persei is a wide binary star system in the northern constellation of Perseus. It has the Bayer designation ο Persei, while 40 Persei is the Flamsteed designation. The system is visible to the naked eye as a faint, blue-white hued point of light with an apparent visual magnitude of 4.97. It is located approximately 1060 light years away from the Sun based on parallax, and is drifting further away with a radial velocity of +22 km/s. The system is a member of the Perseus OB2 association of co-moving stars.
4 Persei is a single star in the northern constellation of Perseus, located around 670 light years away from the Sun. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 5.04 The Bayer designation for this star is g Persei; 4 Persei is the Flamsteed designation. This object has a peculiar velocity of 26.3 km/s and may be a runaway star.
μ Phoenicis, Latinized as Mu Phoenicis, is a suspected astrometric binary star system in the southern constellation of Phoenix. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.59. This system is located approximately 246 light years distant from the Sun based on parallax, and is drifting further away with a radial velocity of +17.4 km/s.
19 Puppis is a binary star system in the southern constellation of Puppis, near the northern border with Hydra and Monoceros. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.72. The system is located approximately 177 light years away from the system based on parallax. It is receding from the Earth with a heliocentric radial velocity of +36 km/s, having come to within 31 light-years some 1.4 million years ago.
9 Persei is a single variable star in the northern constellation Perseus, located around 4,300 light years away from the Sun. It has the Bayer designation i Persei; 9 Persei is the Flamsteed designation. This body is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of about 5.2. It is moving closer to the Sun with a heliocentric radial velocity of −15.2 km/s. The star is a member of the Perseus OB1 association of co-moving stars.
42 Persei is a binary star system in the northern constellation of Perseus. It has the Bayer designation n Persei, while 42 Persei is the Flamsteed designation. The system is visible to the naked eye as a dim, white-hued point of light with an apparent visual magnitude of 5.11. It is located around 93 parsecs (302 ly) distant from the Sun, but is drifting closer with a radial velocity of −12.4 km/s.
31 Persei is a single star in the northern constellation of Perseus. It is visible to the naked eye as a dim, blue-white hued point of light with an apparent visual magnitude of 5.05. This star is located around 172 parsecs (560 ly) away from the Sun, and it is drifting closer with a radial velocity of −1.6 km/s. It is likely a member of the Alpha Persei Cluster.