g 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

  5. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names g Ser, NSV 07350, 41 Ser, HR 5933, HD 142860, SAO 101826, FK5: 591, WDS 15565+1540A
constellation Serpens

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: 15h 56min 27,2sec DEC: +15° 39' 42''
position (J1900) RA: 15h 51min 50sec DEC: +15° 59' 16''
proper motion (J2000) RA: 0,312 arcsec/a DEC: -1,281 arcsec/a
radial velocity 7 km/s
note: suspected variable radial velocity
rotational velocity 8 km/s (uncertain) (variable)
trigonometric parallax 0,069 arcsec

magnitude

visual magnitude 3,85
(V on UBV Johnson system)

spectral / color information

spectral class F6V
B-V-magnitude 0,48
U-B-magnitude -0,03
R-I-magnitude 0,24
note (category: colors): Color excess E(B-V) = +0.03.

variability information

variable star identification 7350

double/multiple star system information

number of components of multiple star system 3
separation 201,5 arcsec
mag difference (of double or brightest multiple) 6,6
component ID AB
note Worley (1978) update of the IDS
note (category: double and multiple data): Companions optical?

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

position, motion, parallax:

position (J2000) RA: 15h 56min 27,187sec DEC: +15° 39' 41,88'' ±0,06 arcsec source: 15
proper motion (J2000) RA: 0,0216 arcsec/a DEC: -1,281 arcsec/a source: 25
radial velocity 7 km/s source: 25
trigonometric parallax 0,069 ±0,007 arcsec source: 25
galactic coord. (B1950) longitude: 27,75° latitude: 45,71°
GCI unit vector (J2000) X: -0,494283 Y: -0,826322 Z: 0,269956

magnitude:

visual 3,85 (observed) source: 25
photovisual 3,9 source: 2

spectral information:

spectral class F5 source: 96
Morgan-Keenan F6V source: 25
B-magnitude 4,33 ±0,05 B-V-magnitude 0,48
U-magnitude 4,3 ±0,05 U-B-magnitude -0,03

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 220,3 arcsec
magnitude difference between brightest and second brightest component 6,7
position angle 317 °

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 54min 8,455sec DEC: +15° 49' 24,77'' ±0,004 arcsec
position (J2000) RA: 15h 56min 27,189sec DEC: +15° 39' 41,98''
proper motion J1950 (FK4) RA: 0,0212 arcsec/a DEC: -1,285 arcsec/a ±0,001 arcsec/a in RA
±0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0216 arcsec/a DEC: -1,28 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,9 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class F5
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 591
Durchmusterung BD+16 2849
Boss General Catalogue 21408
Henry Draper Catalogue 142860

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

position and proper motion:

position (J2000) RA: 15h 56,5min DEC: +15° 40'
proper motion (J2000) RA: 0,312 arcsec/a DEC: 0 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 1850 7 299° 139,2'' 3,85 10,5 F6V STT
1924 317° 220,3''
BC 1908 1 165° 177,1'' 10,5 10,9 - STT

discoverer information:

discoverer code discoverer reference
STT Struve, O.

notes:

note Gamma Ser. Proper motion of A +312 -1281.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 15h 54min 8,5sec DEC: +15° 49' 25''

variability informations:

magnitute at max. brightness 3,79
magnitute at min. brightness 3,88
photometric system visual, photovisual or Johnson's V

spectral information

spectral class F6

references

to a study 731201D (designation: HD 142860)