U Aquilae

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U Aquilae
Observation data Epoch J2000 Equinox J2000

Constellation	Aquila
Right ascension	19^h 29^m 21.3608^s
Declination	-07° 02′ 38.711 ″
Apparent magnitude (V)	6.37
Characteristics
Spectral type	F8Ib-IIv
U−B color index	0.17
B−V color index	1.11
Variable type	Cepheid variable
Astrometry

Radial velocity (R_v)	-6.5 km/s
Proper motion (μ)	RA: -0.33 mas/yr Dec.: -9.4 mas/yr
Parallax (π)	2.05 ± 0.93 mas
Distance	approx. 1,600 ly (approx. 500 pc)
Absolute magnitude (M_V)	7.32^{[citation needed]}

Details

Mass	1,7 M_☉
Radius	1,4 R_☉
Luminosity	6 L_☉
Temperature	6,000–7,500 K
Metallicity	?
Rotation	0,01923047227926078 Year
Age	? years

Orbit
Companion	U Aquilae B
Semi-major axis (a)	1,6"
Inclination (i)	230°
Orbit
Companion	U Aquilae C
Semi-major axis (a)	35.2"
Inclination (i)	348°
Other designations
GCRV 11912, IDS 19240-0715 AB, TYC 5143-1372-1, KUI 91AB, IRAS 19266-0708, UBV M 23815, ADS 12503 AB, GSC 05143-01372, LS IV -07 35, UBV 21626, ALS 10306, HD 183344, 2MASS J19292135-0702387, uvby98 100183344 ABV, BD-07° 4968, HERZ 2291, PLX 4556, YZ 97 6771, CCDM J19294-0703AB, HIC 95820, PPM 202954, AAVSO 1924-07, CSI-07 4968 1, HIP 95820, SAO 143454, GC 26905, HR 7402.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

U Aquilae or ADS 12503 A is classical Cepheid variable (delta Cep type).

Components

NAME	Right ascension	Declination	Apparent magnitude (V)	Spectral type	Database references
ADS 12503 B (BD-07 4968C)	19^h 29^m 20.8^s	-07° 02' 03	14.0	G4	Simbad
ADS 12503 C (ADS 12503 D)			14.0		Simbad

v t e Stars of Aquila

Bayer	α (Altair) β (Alshain) γ (Tarazed) δ ε ζ (Deneb el Okab) η θ (Tseen Foo) ι (Al Thalimain) κ λ μ ν ξ ο π σ τ υ φ χ ψ ω¹ ω²

Flamsteed	4 5 7 8 10 11 12 14 15 18 19 20 21 22 23 24 26 27 28 31 35 36 37 42 45 46 51 56 57 58 62 64 66 68 69 70 14 Sge 62 Ser

Variable	R U V W RR RT SZ TT UU VX AA CI DO EL FF FM FN KL KO KP OO QS QY V337 V341 V346 V368 V374 V417 V450 V500 V536 V603 V604 V605 V606 V725 V794 V803 V805 V822 V889 V923 V1182 V1208 V1229 V1286 V1286 V1291 V1302 V1315 V1333 V1339 V1370 V1379 V1401 V1402 V1412 V1413 V1419 V1425 V1427 V1429 V1432 V1449 V1472 V1493 V1494 V1654 V1663 V1691 V1703

HR	7085 7099 7143 7163 7208 7214 7269 7288 7300 7307 7313 7325 7349 7353 7354 7389 7396 7397 7404 7407 7412 7432 7438 7449 7456 7471 7516 7541 7542 7559 7562 7569 7598 7599 7636 7637 7648 7681 7693 7700 7717 7768 7794 7803 7809 7878

HD	179079 179218 182040 183263 184279 185966 186535 187734 190073 192086 192699 194263 195617

Gliese	Gliese 735 Gliese 752

Other	CoRoT-2 CoRoT-3 CoRoT-8 GRS 1915+105 1H 1905+000 LDS 678 PSR B1853+01 PSR B1955+09 PSR B1913+16 PSR B1915+13 PSR B1916+14 PSR B1929+10 PSR B1933+16 PSR J1846-0258 PSR J1903+0327 PSR J1951+1123 SGR 1900+14 SS 433 4U 1907+09 VB 10 W43A WR 123

Former	ρ (until 1992)

List

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