Iota Boötis

Starbox begin
name=ι Boötis Starbox image


caption =ι Boötis Starbox observe
epoch=J2000
ra=14^h 16^m 09.9294^s
dec= +51° 22′ 02.033″
appmag_v=4.75
constell=Boötes Starbox character
class=A9V
r-i = 0.09
v-r =
b-v = 0.2
u-b = 0.06
variable=Delta Scuti variable Starbox astrometry
radial_v=-18.7
prop_mo_ra=-149.98
prop_mo_dec=89.42
parallax=33.54
p_error=0.56
absmag_v=4.96 Starbox detail
mass=3,1
radius=2,1
luminosity=40 | temperature=7,500–10,000
metal=
gravity=
rotation=137 Km/s
0,00212755 Year
age= Starbox visbin
name=CCDM 14162+5122 B
period=
axis=38.5
eccentricity=
inclination=33
node=
periastron=

Starbox visbin
name=CCDM 14162+5122 C
period=
axis=85.9
eccentricity=
inclination=197
node=
periastron=

Starbox catalog
names=Asellus Secondus, 21 Boötis, HR 5350, HD 125161, Wo 9474, BD+52°1784, FK5 528, HIP 69713, SAO 29071, GC 19269, ADS 9198, CCDM 14162+5122. Starbox reference
Simbad=HD+125161
ARICNS = Starbox reference
Simbad=ADS+9198

Iota Boötis (ι Boo / ι Boötis) is a star system in the constellation Boötes. It also has the traditional name Asellus Secundus (Latin for "second donkey colt") and the Flamsteed designation 21 Boötis. Iota Boötis is a double star, with components at an angular distance of 38.6 arcseconds, easily separated with binoculars. It is approximately 97 light years from Earth.

Components

The primary component, Iota Boötis A, a spectroscopic binary, is white A-type main sequence dwarf with a mean apparent magnitude of +4.75. It is classified as a Delta Scuti type variable star and its brightness varies from magnitude +4.73 to +4.78. The companion, Iota Boötis B, is a magnitude +8.27 star belonging to spectral class A2.

Reference

* [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%205350 HR 5350]
* [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J14162%2b5122A CCDM J14162+5122]
* [http://aladin.u-strasbg.fr/AladinPreview?-c=V*+iot+Boo&ident=V*+iot+Boo&submit=Aladin+previewer Image Iota Boötis]
* [http://www.purplehell.com/riddletools/stars.htm The Constellations and Named Stars]