Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquila |
Right ascension | 19h 27m 33.90756s [2] |
Declination | +14° 16′ 56.9284″ [2] |
Apparent magnitude (V) | 6.32 [3] |
Characteristics | |
Spectral type | B4III [4] |
U−B color index | −0.512 [5] |
B−V color index | −0.068±0.005 [5] |
Variable type | suspected [6] |
Astrometry | |
Radial velocity (Rv) | +4.0±4.3 [7] [5] km/s |
Proper motion (μ) | RA: 6.162 [2] mas/yr Dec.: −4.550 [2] mas/yr |
Parallax (π) | 2.8745 ± 0.0280 mas [2] |
Distance | 1,130 ± 10 ly (348 ± 3 pc) |
Absolute magnitude (MV) | −0.66 [5] |
Details | |
Mass | 5.1 [8] M☉ |
Radius | 5.8 [9] R☉ |
Luminosity | 2,676 [10] L☉ |
Surface gravity (log g) | 3.73 [8] cgs |
Temperature | 15,139 [8] K |
Metallicity [Fe/H] | −0.003 [8] dex |
Rotational velocity (v sin i) | 200 [11] km/s |
Age | 160 [12] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 183144 is suspected variable star in the equatorial constellation of Aquila. It is a hot giant star about 1,130 light years away.
Results from the MASCARA experiment indicate that HD 183144 is a pulsating variable star with a period of 0.3649 days, during which it varies by 0.01 magnitude in white light. [14] [15] It has a mass five times that of the Sun and, at an age of 160 million years, has already evolved away from the main sequence. It has expended to nearly six times the radius of the Sun and, with an effective temperature of 15,139 K , it has a bolometric luminosity of 2,676 L☉.
HD 147513 is a star in the southern constellation of Scorpius. It was first catalogued by Italian astronomer Piazzi in his star catalogue as "XVI 55". With an apparent magnitude of 5.38, according to the Bortle scale it is visible to the naked eye from suburban skies. Based upon stellar parallax measurements by the Hipparcos spacecraft, HD 147513 lies some 42 light years from the Sun.
HD 219134 is a main-sequence star in the constellation of Cassiopeia. It is smaller and less luminous than the Sun, with a spectral class of K3V, which makes it an orange-hued star. HD 219134 is relatively close to our system, with an estimated distance of 21.34 light years. This star is close to the limit of apparent magnitude that can still be seen by the unaided eye. The limit is considered to be magnitude 6 for most observers. This star has a magnitude 9.4 optical companion at an angular separation of 106.6 arcseconds.
RV Caeli, also known as HD 28552, is a solitary, red hued variable star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.4, placing it near the limit for naked eye visibility. The object is located relatively far at a distance of 1,340 light years based on parallax measurements from Gaia DR3, but is rapidly receding with a heliocentric radial velocity of 98 km/s.
HD 92589 is a double star in the constellation Antlia. The system has a combined apparent magnitude of 6.39, placing it near the limit of naked eye visibility. The system is located about 590 light years away based on its parallax shift and has a heliocentric radial velocity of 11 km/s. This indicates that it is drifting away from the Solar System.
HD 161988, also known as HR 6635, is a solitary, orange hued star located in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.07, allowing it to be faintly visible to the naked eye. Parallax measurements place it at a distance of 621 light years, and it is currently receding with a heliocentric radial velocity of 36.8 km/s.
HD 153201 is a Bp star in the southern constellation of Ara. It is chemically peculiar star that displays an anomalous abundance of the element silicon in its spectrum. This is a suspected variable star of the type known as Alpha² Canum Venaticorum. There is a magnitude 9.86 companion star at an angular separation of 2.30″ along a position angle of 131°.
HD 30442 is a solitary star in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye with an apparent magnitude of 5.47 and is estimated to be 403 light years away from the Solar System. The object has a heliocentric radial velocity of −37 km/s, indicating that it is drifting closer.
HD 93194 is a star in the constellation Carina. Its apparent magnitude is 4.79. Its parent cluster is IC 2602.
HD 126209, also known as HR 5389, is a solitary, orange hued star located in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.06, making it faintly visible to the naked eye under ideal conditions. Based on parallax measurements from the Gaia spacecraft, the object is estimated to be 560 light years distant. It appears to be approaching the Solar System with a fairly constrained heliocentric radial velocity of −8.1 km/s. De Mederios et al. (2014) found the radial velocity to be variable, making it a probable spectroscopic binary. Eggen (1993) lists it as a member of the old disk population.
R Octantis, also known as HD 40857, is a solitary, red hued variable star located in the southern circumpolar constellation Octans. It has an apparent magnitude that varies in-between 6.4 and 13.2 within 405 days. At is maximum, it is barely visible to the naked eye. The object is located relatively far at a distance of about 1,900 light years based on parallax measurements from Gaia DR3, but is receding with a heliocentric radial velocity of 46 km/s.
HD 49268 is a solitary star in the southern circumpolar constellation Volans. It has an apparent magnitude of +6.49, placing it near the limit of naked eye visibility. Parallax measurements place the object at a distance of 456 light years; it is receding with a heliocentric radial velocity of 20.6 km/s.
HD 50002 is a solitary star in the southern circumpolar constellation Volans. It is faintly visible to the naked eye with an apparent magnitude of 6.09 and is located at a distance of 708 light years. However, it is drifting further with a heliocentric radial velocity of 5.1 km/s.
HD 64307, also known as HR 3075, is a solitary, orange hued star located in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.35, allowing it to be faintly seen with the naked eye. Based on parallax measurements from the Gaia spacecraft, The object is estimated to be 690 light years distant. It appears to be receding from the Sun, having a heliocentric radial velocity of 34 km/s.
HD 200044 is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.7, allowing it to be faintly seen with the naked eye. The object is located 598 light years away, but is approaching the Solar System with a heliocentric radial velocity of −15.07 km/s.
HD 92209 is a probable spectroscopic binary in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude of 6.29, placing it near the max naked eye visibility. Parallax measurements place the system at a distance of 600 light years and is currently receding with a heliocentric radial velocity of almost 18 km/s.
HD 193721 is an astrometric binary in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.77, allowing it to be faintly seen with the naked eye. Parallax measurements place the system 760 light years away from the Solar System and it is currently receding with a heliocentric radial velocity 8.6 km/s.
HD 1032 is a solitary star in the southern circumpolar constellation Octans. It is faintly visible to the naked eye with an apparent magnitude of 5.77 and is estimated to be 850 light years away from the Solar System based on parallax measure. However, it is receding with a heliocentric radial velocity of 4 km/s.
HD 193373 is a solitary red hued star located in the equatorial constellation Delphinus. It has an apparent magnitude of 6.21, placing it near the limit for naked eye visibility. Parallax measurements place it 846 light years distant and it is currently receding with a heliocentric radial velocity of 22.7 km/s.
SY Equulei, also known as HD 203664, is a single variable star located in the equatorial constellation Equuleus. It has an average apparent magnitude of about 8.5, varying by a few hundredths of a magnitude, making it readily visible in binoculars and small telescopes, but not to the naked eye. The star is relatively far away at a distance of 8,000 light years and is receding with a heliocentric radial velocity of 48 km/s. At that distance, SY Equulei is dimmed by 0.19 magnitudes due to interstellar dust.
HD 37289, also known as HR 1916, is a solitary, orange hued star located in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.61, making it faintly visible to the naked eye under ideal conditions. Based on parallax measurements from the Gaia spacecraft, the object is estimated to be 308 light years distant. It appears to be approaching the Sun, having a heliocentric radial velocity of −20.7 km/s.