catalogues and names

The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

Combined General Catalogue of Variable Stars (Vol. I-III)

catalogues and names

catalogues and names	m Lep, mu Lep, 5 Lep, HR 1702, HD 33904, SAO 150237, BD -16 1072, FK5: 1144
constellation	Lepus

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

position, motion, parallax:

position (J2000)	RA: 5h 12min 55.9sec	DEC: -16° 12' 20''
position (2000.72)	RA: 5h 12min 58sec	DEC: -16° 12' 17''
position (B1900)	RA: 5h 8min 26.3sec	DEC: -16° 19' 25''
proper motion (J2000)	RA: 0.043 arcsec/a	DEC: -0.026 arcsec/a
radial velocity	28 km/s
rotational velocity	12 km/s (uncertain) (variable)
trigonometric parallax	0.023 arcsec
galactic coordinates	longitude: 217.25°	latitude: -28.91°

magnitude

visual magnitude

3.31 (V on UBV Johnson system)

spectral / color information

spectral class	B9IIIpHgMn
B-V-magnitude	-0.11
U-B-magnitude	-0.39
R-I-magnitude

note (category: spectra):

Gallium lines strong. Strong C2 bands. Manganese star spectrum appears earlier at shorter wavelengths.

variability information

variable star identification

Mu Lep

note (category: variability):

Alpha CV 2.97 - 3.41V, per. about 2d.

miscellaneous information

note (category: group membership):

Member of Pleiades group.

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

position, motion, parallax:

position (J2000)	RA: 5h 12min 55.886sec	DEC: -16° 12' 19.97''	±0.06 arcsec	source: 15
position (2000.72)	RA: 5h 12min 58sec	DEC: -16° 12' 17''	JD: 2451809.24
proper motion (J2000)	RA: 0.003 arcsec/a	DEC: -0.026 arcsec/a		source: 25
radial velocity	28 km/s			source: 25
trigonometric parallax	0.023 arcsec		±0.002 arcsec	source: 25
galactic coord. (B1950)	longitude: 217.25°	latitude: -28.91°

magnitude:

visual	2.97 (observed)	source: 30
photovisual	3.3	source: 2
photographic	3.3	source: 2

spectral information:

spectral class	A0		source: 96
Morgan-Keenan	B9IIIpHgMn		source: 25
B-magnitude	3.2 ±0.05	B-V-magnitude	-0.11
U-magnitude	2.81 ±0.05	U-B-magnitude	-0.39

variability information:

source of data: 30

variability type	160
var. amplitude	0.44
var. period	2

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
15	FK5, FK5 Extension and FK5 Supplement
Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991
25	Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
30	GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88
96	SAO or HD/HDE Catalog
Reference from Value 1 or Reference from Value 2

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

position and proper motion:

position (B1950)	RA: 5h 10min 41.013sec	DEC: -16° 15' 47.97''	±0.007 arcsec
position (2000.72)	RA: 5h 12min 58sec	DEC: -16° 12' 16''	JD: 2451809.24
position (J2000)	RA: 5h 12min 55.867sec	DEC: -16° 12' 19.99''
proper motion B1950 (FK4)	RA: 0.0023 arcsec/a	DEC: -0.027 arcsec/a	±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0027 arcsec/a	DEC: -0.027 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	3.3 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	A0p
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 1144
Durchmusterung	BD-16 1072
Boss General Catalogue	6382
Henry Draper Catalogue	33904

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

position:

position (equinox 1950.0)

RA: 5h 10min 41sec

DEC: -16° 15' 48''

variability informations:

variability type	ACV	rotating variable star
magnitute at max. brightness	2.97
magnitute at min. brightness	3.41
photometric system	visual, photovisual or Johnson's V
period [d]	2 (uncertain)

spectral information

spectral class

B9IIIp(Hg-Mn)

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	48/9012
constellation	Lepus
notes on existence	The star is equivalent to '0490001 R'.

variability type description

variability type

description

ACV

Alpha2 Canum Venaticorum variables. These are main-sequence stars with spectral types B8p-A7p and displaying strong magnetic fields. Spectra show abnormally strong lines of Si, Sr, Cr, and rare earths whose intensities vary with rotation. They exhibit magnetic field and brightness changes (periods of 0.5-160 days or more). The amplitudes of the brightness changes are usually withine 0.01-0.1 mag in V. ACVO Rapidly oscillating Alpha2 CVn variables. These are nonradially pulsating, rotating magnetic variables of Ap spectral type (DO Eri). Pulsation periods are in the range of 6-12 mmag (0.004-0.01 days), while amplitudes of light variation caused by the pulsation are about 0.01 mag in V. The pulsational variations are superposed on those caused by rotation.