Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Monoceros |
Right ascension | 06h 01m 50.42241s [1] |
Declination | −10° 35′ 52.5565″ [1] |
Apparent magnitude (V) | 4.92 [2] (4.98 + 8.25) [3] |
Characteristics | |
Spectral type | B5 III [4] |
U−B color index | −0.58 [5] |
B−V color index | −0.12 [5] |
Astrometry | |
Radial velocity (Rv) | +39.00 [6] km/s |
Absolute magnitude (MV) | −1.94 [2] |
A | |
Proper motion (μ) |
RA: −8.282
[7]
mas/
yr Dec.: 4.385 [7] mas/ yr |
Parallax (π) | 4.5717 ± 0.3115 mas [7] |
Distance | 710 ± 50
ly (220 ± 10 pc) |
B | |
Proper motion (μ) |
RA: 6.990
[8]
mas/
yr Dec.: 4.574 [8] mas/ yr |
Parallax (π) | 3.1006 ± 0.0960 mas [8] |
Distance | 1,050 ± 30
ly (323 ± 10 pc) |
Details | |
3 Mon A | |
Mass | 5.85 [9] M☉ |
Radius | 4.5 [10] R☉ |
Luminosity | 1,105 [2] L☉ |
Temperature | 15,000 [9] K |
Metallicity [Fe/H] | 0.00 [11] dex |
Rotational velocity (v sin i) | 45 [12] km/s |
Other designations | |
Database references | |
SIMBAD | data |
3 Monocerotis is a binary star [3] system in the equatorial constellation of Monoceros, located approximately 780 light years away from the Sun based on parallax. [1] It is visible to the naked eye as a faint, blue-white hued star with a combined apparent visual magnitude of 4.92. [2] The system is moving further from the Earth with a heliocentric radial velocity of +39 km/s. [6]
The magnitude 4.98 primary, designated component A, has a stellar classification of B5 III, [4] matching an evolved blue giant star. It has 5.85 [9] times the mass of the Sun and is radiating 1,105 [2] times the Sun's luminosity from its photosphere at an effective temperature of 15,000 K. [9] The companion, component B, is magnitude 7.96 with an angular separation of 1.9 ″ from the primary. [14]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Monoceros |
Right ascension | 06h 01m 50.42241s [1] |
Declination | −10° 35′ 52.5565″ [1] |
Apparent magnitude (V) | 4.92 [2] (4.98 + 8.25) [3] |
Characteristics | |
Spectral type | B5 III [4] |
U−B color index | −0.58 [5] |
B−V color index | −0.12 [5] |
Astrometry | |
Radial velocity (Rv) | +39.00 [6] km/s |
Absolute magnitude (MV) | −1.94 [2] |
A | |
Proper motion (μ) |
RA: −8.282
[7]
mas/
yr Dec.: 4.385 [7] mas/ yr |
Parallax (π) | 4.5717 ± 0.3115 mas [7] |
Distance | 710 ± 50
ly (220 ± 10 pc) |
B | |
Proper motion (μ) |
RA: 6.990
[8]
mas/
yr Dec.: 4.574 [8] mas/ yr |
Parallax (π) | 3.1006 ± 0.0960 mas [8] |
Distance | 1,050 ± 30
ly (323 ± 10 pc) |
Details | |
3 Mon A | |
Mass | 5.85 [9] M☉ |
Radius | 4.5 [10] R☉ |
Luminosity | 1,105 [2] L☉ |
Temperature | 15,000 [9] K |
Metallicity [Fe/H] | 0.00 [11] dex |
Rotational velocity (v sin i) | 45 [12] km/s |
Other designations | |
Database references | |
SIMBAD | data |
3 Monocerotis is a binary star [3] system in the equatorial constellation of Monoceros, located approximately 780 light years away from the Sun based on parallax. [1] It is visible to the naked eye as a faint, blue-white hued star with a combined apparent visual magnitude of 4.92. [2] The system is moving further from the Earth with a heliocentric radial velocity of +39 km/s. [6]
The magnitude 4.98 primary, designated component A, has a stellar classification of B5 III, [4] matching an evolved blue giant star. It has 5.85 [9] times the mass of the Sun and is radiating 1,105 [2] times the Sun's luminosity from its photosphere at an effective temperature of 15,000 K. [9] The companion, component B, is magnitude 7.96 with an angular separation of 1.9 ″ from the primary. [14]