b Serpentis


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 b Ser, NSV 20396, 28 Ser, HR 5867, HD 141003, SAO 101725, FK5: 583, WDS 15462+1525A
constellation Serpens

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


position, motion, parallax:

position (J2000) RA: 15h 46min 11,3sec DEC: +15 25' 19''
position (J1900) RA: 15h 41min 34,3sec DEC: +15 44' 5''
proper motion (J2000) RA: 0,067 arcsec/a DEC: -0,045 arcsec/a
radial velocity -1 km/s
note: variable radial velocity
rotational velocity 170 km/s (uncertain) (variable)
trigonometric parallax 0,041 arcsec
note (category: radial and/or rotational velocities): ADS 9778B, +2.8k/s.
note (category: dynamical parallaxes): 0.016".

magnitude

visual magnitude 3,67
(V on UBV Johnson system)

spectral / color information

spectral class A2IV
B-V-magnitude 0,06
U-B-magnitude 0,08
R-I-magnitude 0,03

double/multiple star system information

number of components of multiple star system 5
separation 30,6 arcsec
mag difference (of double or brightest multiple) 6,3
component ID AB
note (category: double and multiple data): B, 9.72V, +0.84(B-V), +0.68(U-B), K3V, CPM. C, 10.7v at 201". Also CPM with BD+15d2906 at 1642", itself a double, 8.4, 10.5v sep. 6".

miscellaneous information

note (category: group membership): Sirius group; member of Ursa cluster; UMa stream.

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

position, motion, parallax:

position (J2000) RA: 15h 46min 11,262sec DEC: +15 25' 18,56'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0046 arcsec/a DEC: -0,045 arcsec/a source: 25
radial velocity -1 km/s source: 25
trigonometric parallax 0,041 0,004 arcsec source: 25
galactic coord. (B1950) longitude: 25,98 latitude: 47,87
GCI unit vector (J2000) X: -0,531406 Y: -0,804297 Z: 0,265923

magnitude:

visual 3,67 (observed) source: 25
photovisual 3,7 source: 2

spectral information:

spectral class A2 source: 96
Morgan-Keenan A2IV source: 25
B-magnitude 3,73 0,05 B-V-magnitude 0,06
U-magnitude 3,81 0,05 U-B-magnitude 0,08

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 30,6 arcsec
magnitude difference between brightest and second brightest component 6,3
position angle 265

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: 15h 43min 52,67sec DEC: +15 34' 37,42'' 0,004 arcsec
position (J2000) RA: 15h 46min 11,276sec DEC: +15 25' 18,54''
proper motion J1950 (FK4) RA: 0,0047 arcsec/a DEC: -0,049 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0048 arcsec/a DEC: -0,045 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,7 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class A2
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 583
Durchmusterung BD+15 2911
Boss General Catalogue 21194
Henry Draper Catalogue 141003

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

position and proper motion:

position (J2000) RA: 15h 46,2min DEC: +15 25'
proper motion (J2000) RA: 0,067 arcsec/a DEC: -0,045 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
AB 1832 24 265 30,6'' 3,66 9,96 A2IV STF1970
AC 1912 3 209 200,1'' 3,7 10,7 - STF1970
1960 210 201,1''

discoverer information:

discoverer code discoverer reference
STF1970 Struve, F.G.W. -

notes:

note Beta Ser. Proper motion of B -069 -058.