NSV 24927

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 NSV 24927, 13 Vul, HR 7592, HD 188260, SAO 87883, WDS 19535+2405
constellation Vulpecula

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


position, motion, parallax:

position (J2000) RA: 19h 53min 27,7sec DEC: +24° 4' 47''
position (J1900) RA: 19h 49min 12,6sec DEC: +23° 49' 7''
proper motion (J2000) RA: 0,027 arcsec/a DEC: 0,038 arcsec/a
radial velocity -28 km/s
note: spectroscopic binaries
rotational velocity 50 km/s (uncertain) (variable)
trigonometric parallax 0,009 arcsec

magnitude

visual magnitude 4,58
(V on UBV Johnson system)

spectral / color information

spectral class B9.5III
B-V-magnitude -0,06
U-B-magnitude -0,14
R-I-magnitude -0,05

double/multiple star system information

separation 1 arcsec
mag difference (of double or brightest multiple) 3,2
note Worley (1978) update of the IDS

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

position, motion, parallax:

position (J2000) RA: 19h 53min 27,694sec DEC: +24° 4' 46,52'' ±0,35 arcsec source: 17
proper motion (J2000) RA: 0,0017 arcsec/a DEC: 0,037 arcsec/a source: 25
radial velocity -28 km/s source: 25
trigonometric parallax 0,009 ±0,001 arcsec source: 25
galactic coord. (B1950) longitude: 61,27° latitude: -1,79°
GCI unit vector (J2000) X: 0,43375 Y: -0,803363 Z: 0,408005

magnitude:

visual 4,58 (observed) source: 25
photovisual 4,5 source: 2
photographic 4,5 source: 16

spectral information:

spectral class A0 source: 96
Morgan-Keenan B9.5III source: 25
B-magnitude 4,52 ±0,05 B-V-magnitude -0,06
U-magnitude 4,38 ±0,05 U-B-magnitude -0,14

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 1,1 arcsec
magnitude difference between brightest and second brightest component 2,7
position angle 243 °

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
17 ACRS
Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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: 19h 51min 20,09sec DEC: +23° 56' 52,79'' ±0,021 arcsec
position (J2000) RA: 19h 53min 27,713sec DEC: +24° 4' 46,7''
proper motion J1950 (FK4) RA: 0,0019 arcsec/a DEC: 0,04 arcsec/a ±0,004 arcsec/a in RA
±0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,002 arcsec/a DEC: 0,038 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,5 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class A0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue GC, catalogue number: 27544
Durchmusterung BD+23 3820
Boss General Catalogue 27544
Henry Draper Catalogue 188260

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

position and proper motion:

position (J2000) RA: 19h 53,5min DEC: +24° 5'
proper motion (J2000) RA: 0,023 arcsec/a DEC: 0,037 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
- 1953 34 243° 0,8'' 4,7 7,4 B9.5III DJU 4
1987 - 1,1''

discoverer information:

discoverer code discoverer reference
DJU 4 Djurkovic, P. -

notes:

note 13 Vul.