b Leonis Minoris


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

  5. 4th Catalog of Orbits of Visual Binaries


catalogues and names b LMi, 31 LMi, HR 4100, HD 90537, SAO 62053, FK5: 390, WDS 10279+3642
constellation Leo Minor

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


object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 10h 27min 53sec DEC: +36 42' 26''
position (J1900) RA: 10h 22min 6,1sec DEC: +37 13' 11''
proper motion (J2000) RA: -0,118 arcsec/a DEC: -0,101 arcsec/a
radial velocity 6 km/s
note: spectroscopic binaries
note: orbital data avaible
rotational velocity <19 km/s
trigonometric parallax 0,022 arcsec
note (category: dynamical parallaxes): 0.017".

magnitude

visual magnitude 4,21
(V on UBV Johnson system)

spectral / color information

spectral class G9IIIab
B-V-magnitude 0,9
U-B-magnitude 0,64
R-I-magnitude 0,46

double/multiple star system information

separation 0,5 arcsec
mag difference (of double or brightest multiple) 1,7
note (category: double and multiple data): 4.40 G8III-IV, 6.12 F8V, 37.92y, a = 0.340". Combined mag., colors.
note (category: spectroscopic binaries): ADS 7780A, 37.9y, K 3.2k/s, V0 +5.7k/s, asini 476. Masses 2.1 and 0.5 solar.

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

position, motion, parallax:

position (J2000) RA: 10h 27min 53,009sec DEC: +36 42' 26,06'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0098 arcsec/a DEC: -0,101 arcsec/a source: 25
radial velocity 6 km/s source: 25
trigonometric parallax 0,022 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 186,29 latitude: 58,28
GCI unit vector (J2000) X: -0,737809 Y: 0,313624 Z: 0,597726

magnitude:

visual 4,21 (observed) source: 25
photovisual 4,4 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan G9IIIab source: 25
B-magnitude 5,11 0,05 B-V-magnitude 0,9
U-magnitude 5,75 0,05 U-B-magnitude 0,64

double/multiple star system information:

source of data: 19
magnitude difference between brightest and second brightest component 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
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
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: 10h 24min 59,888sec DEC: +36 57' 50,88'' 0,005 arcsec
position (J2000) RA: 10h 27min 53,009sec DEC: +36 42' 26,2''
proper motion J1950 (FK4) RA: -0,01 arcsec/a DEC: -0,105 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0099 arcsec/a DEC: -0,1 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,4 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 390
Durchmusterung BD+37 2080
Boss General Catalogue 14358
Henry Draper Catalogue 90537

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

position and proper motion:

position (J2000) RA: 10h 27,9min DEC: +36 42'
proper motion (J2000) RA: -0,118 arcsec/a DEC: -0,101 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
- 1904 often '' 4,4 6,4 G8III HU 879

discoverer information:

discoverer code discoverer reference
HU 879 Hussey, W.J. -

notes:

note Beta LMi. P = 37.9yr., a = 0.34", motion direct in a highly-inclined orbit.

data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)

position:

position (J1900) RA: 10h 22,1min DEC: +37 13'

magnitudes, spectral classes, orbital elements:

author: W.D. Heintz
date of observation: 1981
magnitude of component A: 4,4
magnitude of component B: 4,4
spectral class component B: G9III
spectral class component B: G9III
period [y]: 37,92
semi-major axis [arcsec]: 0,34
inclination [deg]: 77
node [deg]: 39 (ascending)
equinox of node: 2000
eccentricity: 0,748
time of periastron passage: 1960,98
grade: good
reference: Circ. Inf. No. 84, 1981.
notes Combined visual-spectroscopic orbit. Visual observations alone only cover a narrow apastron arc.