Sigma Aquilae

Starbox begin
name=σ Aquilae Starbox image


caption = σ Aquilae Starbox observe
epoch=J2000
ra=19^h 39^m 11.6415^s
dec= +05° 23′ 51.984″
appmag_v=5.178
constell=Aquila Starbox character
class=B3V+
b-v=0.03
u-b=-0.6
r-i =
v-r =
variable=Beta Lyrae variables Starbox astrometry
radial_v=-4.8
prop_mo_ra=2.08
prop_mo_dec= -3.78
parallax=4.78
p_error=0.82
absmag_v=5.176 Starbox detail
mass=18
radius=7
luminosity=20,000 | temperature=10,000–30,000
metal=?
rotation=121 Km/s
0.00533952 Year
age=? Starbox visbin
name=σ Aquilae B
period=
axis=47.8
eccentricity=
inclination=328
node=
periastron= Starbox catalog
names=44 Aquilae, V* sig Aql, GCRV 12038, IDS 19342+0510 A, TD1 25149, IRAS 19366+0517, TYC 487-3422-1, 2MASS J19391164+0523519, UBV M 23997, ADS 12737 A, GSC 00487-03422, N30 4347, UBV 21310, AG+05° 2775, HD 185507, PPM 168338, YZ 5 9427, BD+05° 4225, HGAM 768, ROT 3528, YZ 0 2219, CCDM J19392+0524A, HIC 96665, SAO 124903, CSI+05 4225 1, HIP 96665, SBC7 759, GC 27185, HR 7474. Starbox reference
Simbad=HD+185507
ARICNS = Starbox reference
Simbad=ADS+12737

Sigma Aquilae (σ Aql / σ Aquilae) is a binary star in the constellation Aquila. It is approximately 680 light years from Earth.

Sigma Aquilae is an eclipsing spectroscopic binary. Both components are detached blue-white B-type main sequence dwarfs which do not fill their Roche lobes. The mean apparent magnitude of the binary is +5.18. Because it is an eclipsing binary, σ Aquilae is also a variable star and its brightness varies by 0.2 magnitudes with a period equal to its orbital period of 1.95 days.

References

* [http://www.alcyone.de/cgi-bin/search.pl?object=HR7474 HR 7474]
* [http://aladin.u-strasbg.fr/AladinPreview?-c=V*+sig+Aql&ident=V*+sig+Aql&submit=Aladin+previewer Image ADS 12737]
* [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%207474 HR 7474]
* [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J19392%2b0524A CCDM 19392+0524]

Components