m2Bootis


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. The Washington Visual Double Star Catalog, 1996.0


catalogues and names m2Boo, 51 Boo, HR 5734, HD 137392, SAO 64687, WDS 15245+3723B
constellation Bootes

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


position, motion, parallax:

position (J2000) RA: 15h 24min 30,9sec DEC: +37 20' 52''
position (J1900) RA: 15h 20min 44,1sec DEC: +37 41' 53''
proper motion (J2000) RA: -0,144 arcsec/a DEC: 0,094 arcsec/a
radial velocity -9 km/s
note: suspected variable radial velocity
rotational velocity =<25 km/s (uncertain) (variable)
trigonometric parallax 0,039 arcsec
note (category: dynamical parallaxes): 0.028".

magnitude

visual magnitude 6,5
(V on UBV Johnson system)

spectral / color information

spectral class G1V
B-V-magnitude 0,59
U-B-magnitude 0,13

double/multiple star system information

number of components of multiple star system 3
separation 108,9 arcsec
mag difference (of double or brightest multiple) 2,2
component ID AxBC
note (category: double and multiple data): BC 6.98 dG5, 7.63, 260.10y, a = 1.463". Combined mag., colors of BC. Mean mass BC, 0.52 solar.

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

position, motion, parallax:

position (J2000) RA: 15h 24min 30,89sec DEC: +37 20' 51,25'' 0,2 arcsec source: 52
proper motion (J2000) RA: -0,0118 arcsec/a DEC: 0,094 arcsec/a source: 25
radial velocity -9 km/s source: 25
trigonometric parallax 0,039 0,004 arcsec source: 25
galactic coord. (B1950) longitude: 60,33 latitude: 56,31
GCI unit vector (J2000) X: -0,498902 Y: -0,61893 Z: 0,606649

magnitude:

visual 6,5 (observed) source: 25
photovisual 6,7 source: 2
photographic 7 source: 16

spectral information:

spectral class K0 source: 96
Morgan-Keenan G1V source: 25
B-magnitude 7,09 0,05 B-V-magnitude 0,59
U-magnitude 7,22 0,05 U-B-magnitude 0,13

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 2,1 arcsec
magnitude difference between brightest and second brightest component 0,6
position angle 10

component magnitude spectral class catalogue(s)/name(s)
A 4,31 F0 Alkalurops, m1Bootis, 51 Boo, HR 5733, HD 137391, SAO 64686
B 6,5 K0 m2Bootis, 51 Boo, HR 5734, HD 137392, SAO 64687

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
52 PPMN-HP subset
PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H)
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 (J1950) RA: 15h 22min 37,402sec DEC: +37 31' 18,89'' 0,022 arcsec
position (J2000) RA: 15h 24min 30,891sec DEC: +37 20' 51,59''
proper motion J1950 (FK4) RA: -0,0124 arcsec/a DEC: 0,091 arcsec/a 0,004 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0121 arcsec/a DEC: 0,094 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 6,7 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class K0
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: 20725
Durchmusterung BD+37 2637
Boss General Catalogue 20725
Henry Draper Catalogue 137392

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

position and proper motion:

position (J2000) RA: 15h 24,5min DEC: +37 23'
proper motion (J2000) RA: -0,146 arcsec/a DEC: 0,087 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
Aa 1988 2 350 0,1'' 4,31 - F2IVa CHR 181
1993 280 -
Aa-BC 1834 54 171 108,4'' 4,31 6,5 F2IVa G0V STF 28
BC 1826 often 327 1,3'' 7,2 7,8 G0V STF1938
1994 10 2,1''

discoverer information:

discoverer code discoverer reference
CHR 181 - -
STF 28 Struve, F.G.W. -
STF1938 Struve, F.G.W. -

notes:

note Mu (1) Boo. A is a long-period spectroscopic binary. BC: Mu (2) Boo. P = 246yr., a = 1.40", motion retrograde.