Delta Aquilae
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Aquila |
| Right ascension | 19h 25m 29.9005s |
| Declination | +03° 06′ 53.191″ |
| Apparent magnitude (V) | 3.4 |
| Characteristics | |
| Spectral type | F0IV |
| U-B color index | 0.04 |
| B-V color index | 0.32 |
| Astrometry | |
| Radial velocity (Rv) | -30.1 km/s |
| Proper motion (μ) | RA: 253.07 mas/yr Dec.: 80.67 mas/yr |
| Parallax (π) | 65.05 ± 0.81 mas |
| Distance | 50.1 ± 0.6 ly (15.4 ± 0.2 pc) |
| Absolute magnitude (MV) | 3.68 |
| Details | |
| Mass | ? M☉ |
| Radius | ? R☉ |
| Luminosity | ? L☉ |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Visual binary orbit | |
| Companion | δ Aquilae B |
| Period (P) | 3.422 yr |
| Semimajor axis (a) | 0.058" |
| Eccentricity (e) | 0.4 |
| Inclination (i) | 142° |
| Longitude of the node (Ω) | 141° |
| Periastron epoch (T) | 1958.123 |
| Visual binary orbit | |
| Companion | δ Aquilae C |
| Semimajor axis (a) | 108.9" |
| Inclination (i) | 271° |
| Other designations | |
|
SV* SVS 46, FK5 730, JP11 3101, SAO 124603, * 30 Aql, GC 26816, LSPM J1925+0306, * del Aql, GCRV 11863, LTT 15672, TD1 24638, AG+03° 2453, 2MASS J19252990+0306532, TYC 469-6227-1, ASCC 1160894, GJ 760, N30 4301, UBV M 23752, BD+02° 3879, HD 182640, NLTT 47775, UBV 16450, CCDM J19254+0307A, HIC 95501, NSV 12004, USNO-B1.0 0931-00563946, CSI+02° 3879 1, HIP 95501, PLX 4542, CSV 101835, HR 7377, PMC 90-93 519, 2EUVE J1925+03.1, IDS 19205+0255 A, PPM 167816, EUVE J1925+03.1, IRC +00429, ROT 2793.
|
|
| Database references | |
| SIMBAD | data |
Delta Aquilae (δ Aql / δ Aquilae) is a triple star system in the constellation Aquila. It is approximately 50.1 light years from Earth.
Delta Aquilae is an astrometric binary. The visible component is a yellow-white F-type subgiant with an apparent magnitude of +3.36. The orbital period of the binary is 3.422 years. The visible component is also a spectroscopic binary, bringing the total number of components to three. The spectroscopic binary has an orbital period of 3.77 hours.
[edit] Location
The star's location in the constellation of Aquila is shown in the following map:
[edit] Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| δ Aquilae B | 19h 25m 29.9005s | +03° 06' 53.191 | 3.4 | F3IV | Simbad |
| δ Aquilae C (BD+02 3879B) | 19h 25m 28.3s | +03° 06' 49 | 10.9 | Simbad |
[edit] Reference
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