Asellus Tertius

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)

note (category: star names):

Asellus Tertius.

position, motion, parallax:

position (J2000)	RA: 14h 13min 29sec	DEC: +51° 47' 25''
position (2000.73)	RA: 14h 13min 31sec	DEC: +51° 47' 13''
position (B1900)	RA: 14h 9min 54sec	DEC: +52° 15' 27''
proper motion (J2000)	RA: 0.063 arcsec/a	DEC: -0.002 arcsec/a
radial velocity	-17 km/s note: spectroscopic binaries
rotational velocity	127 km/s (uncertain) (variable)
trigonometric parallax	0.01 arcsec
galactic coordinates	longitude: 96.46°	latitude: 60.91°

note (category: dynamical parallaxes):

0.017".

magnitude

visual magnitude

4.54
(V on UBV Johnson system)

spectral / color information

spectral class	A8IV
B-V-magnitude	0.2
U-B-magnitude	0.14
R-I-magnitude

variability information

variable star identification

Kap2 Boo

note (category: variability):

ADS 9173A, Delta Sct 4.50 - 4.58V, 0.06682 or 0.076242d. Possible beat period of about 16d.

double/multiple star system information

separation	13.4 arcsec
mag difference (of double or brightest multiple)	2.2

note (category: double and multiple data):

Binary with HR 5328.

miscellaneous information

note (category: group membership):

Sirius group? UMa stream.

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000)	RA: 14h 13min 28.951sec	DEC: +51° 47' 24.27''	ą0.2 arcsec	source: 52
position (2000.73)	RA: 14h 13min 31sec	DEC: +51° 47' 12''	JD: 2451810.88
proper motion (J2000)	RA: 0.0053 arcsec/a	DEC: -0.002 arcsec/a		source: 25
radial velocity	-17 km/s			source: 25
trigonometric parallax	0.01 arcsec		ą0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 96.45°	latitude: 60.91°

magnitude:

visual	4.5 (observed)	source: 31
photovisual	4.6	source: 2
photographic	4.7	source: 16

spectral information:

spectral class	A5		source: 29
Morgan-Keenan	A8IV		source: 25
B-magnitude	4.74 ą0.05	B-V-magnitude	0.2
U-magnitude	4.88 ą0.05	U-B-magnitude	0.14

variability information:

source of data: 30

variability type	10
var. amplitude	0.08
var. period	0.08

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	13.4 arcsec
magnitude difference between brightest and second brightest component	2.15
position angle	236 °

component	magnitude	spectral class	catalogue(s)/name(s)
A	4.5	A5	Asellus Tertius, k²Bootis, 17 Boo, HR 5329, HD 124675, SAO 29046
B	6.69	A5	k¹Bootis, 17 Boo, HR 5328, HD 124674, SAO 29045

sources:

2	HD and HDE Catalogs
Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University
16	PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
19	WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
25	Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
29	SAOJ2000
SAO on FK5 at J2000, 1989
30	GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88
31	CRM' (non-GCVS variable data)
Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 1994
52	PPMN-HP subset
PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H)

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (B1950)	RA: 14h 11min 41.518sec	DEC: +52° 1' 23.55''	ą0.016 arcsec
position (2000.73)	RA: 14h 13min 31sec	DEC: +51° 47' 13''	JD: 2451810.88
position (J2000)	RA: 14h 13min 29.026sec	DEC: +51° 47' 24.55''
proper motion B1950 (FK4)	RA: 0.0063 arcsec/a	DEC: -0.007 arcsec/a	ą0.003 arcsec/a in RA ą0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0068 arcsec/a	DEC: -0.002 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.6 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	A5
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue	GC, catalogue number: 19207
Durchmusterung	BD+52 1782A
Boss General Catalogue	19207
Henry Draper Catalogue	124675

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000)	RA: 14h 13.5min	DEC: +51° 47'
proper motion (J2000)	RA: 0.063 arcsec/a	DEC: -0.005 arcsec/a

double/multiple star system information:

component	year	number of measures	position angle	angular separation	magnitude of 1st component	magnitude of 2nd component	spectral class(es)	discoverer code
-	1832	70	238°	12.6''	4.54	6.69	A7V F1V	STF1821
-	1973	70	236°	13.4''	4.54	6.69	A7V F1V	STF1821

discoverer information:

discoverer code	discoverer	reference
STF1821	Struve, F.G.W.	-

notes:

note	Kappa Boo. A is a Delta Scuti-type system. B is a long- period spectroscopic binary with P = 1791.2d. Proper motion of B +103 -012.

data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)

position:

position (equinox 1950.0)

RA: 14h 11min 41.5sec

DEC: +52° 1' 24''

variability informations:

variability type	DSCTC	pulsating variable star
magnitute at max. brightness	4.5
magnitute at min. brightness	4.58
photometric system	visual, photovisual or Johnson's V
period [d]	0.076242
rising time	50 % of period

spectral information

spectral class

A8IV

references

to a study	Vol. I GCVS (see Kholopov et al. 1985-1988)
to a chart/photograph	no chart is avaible, but the star is contained in the 'Bonner Durchmusterung'

miscanellous

ID in the GCVS catalogue	9/90102
constellation	Bootes
notes on existence	The star is equivalent to '0099014 ksi'.
There are notes in published catalog.

variability type description

variability type

description

DSCTC

Variables of the Delta Scuti type. These are pulsating variables of spectral types A0-F5 III-V displaying light amplitudes from 0.003 to 0.9 mag in V (usually several hundredths of a magnitude) and periods from 0.01 to 0.2 days. The shapes of the light curves, periods, and amplitudes usually vary greatly. Radial as well as nonradial pulsations are observed. The variability of some
members of this type appears sporadically and sometimes completely ceases, this being a consequence of strong amplitude modulation with the lower value of the amplitude not exceeding 0.001 mag in some cases. The maximum of the surface layer expansion does not lag behind the maximum light for more than 0.1 periods. DSCT stars are representatives of the galactic disk (flat component) and are phenomenologically close to the SX Phe variables.

DSCTC
Low amplitude group of Delta Sct variables (light amplitude <0.1 mag in V). The majority of this type's representatives are stars of luminosity class V; objects of this subtype generally are representative of the Delta Sct variables in open clusters.

catalogues and names	Asellus Tertius, k²Boo, kap 2 Boo, 17 Boo, HR 5329, HD 124675, SAO 29046, BD +52 1782 A, WDS 14135+5147A
constellation	Bootes