Rotanev

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 Rotanev, b Del, 6 Del, HR 7882, HD 196524, SAO 106316, WDS 20375+1436A
other names Rotanen, Venator
constellation Delphinus

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

note (category: star names): Rotanev; Rotanen; Venator.

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

position, motion, parallax:

position (J2000) RA: 20h 37min 33sec DEC: +14° 35' 43''
position (J1900) RA: 20h 32min 51,5sec DEC: +14° 14' 50''
proper motion (J2000) RA: 0,113 arcsec/a DEC: -0,033 arcsec/a
radial velocity -23 km/s
note: spectroscopic binaries, single lined spectra
note: orbital data avaible
rotational velocity 54 km/s (uncertain) (variable)
trigonometric parallax 0,028 arcsec
note (category: dynamical parallaxes): 0.032".

magnitude

visual magnitude 3,63
(V on UBV Johnson system)

spectral / color information

spectral class F5IV
B-V-magnitude 0,44
U-B-magnitude 0,08
R-I-magnitude 0,24
note (category: spectra): Also classified F5III, F6III.

double/multiple star system information

number of components of multiple star system 5
separation 0,6 arcsec
mag difference (of double or brightest multiple) 1
component ID AB
note (category: double and multiple data): AB 4.0 F5IV, 4.9 F5IV, 26.65y, a = 0.475" or 26.60y, a = 0.480". Speckle interferometry gives sep. 0.58" and with SB data leads to masses 2.2 and 1.8 solar. Combined mag., colors. Components C-E optical.
note (category: spectroscopic binaries): 26.65y D, K 7.6k/s, V0 -24.1k/s, asini 892.35; asini value of 563.8 in Abt and Levy 1976 (ApJS, 30, 273) is in error.

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

position, motion, parallax:

position (J2000) RA: 20h 37min 32,956sec DEC: +14° 35' 42,63'' ±1,24 arcsec source: 29
proper motion (J2000) RA: 0,0078 arcsec/a DEC: -0,033 arcsec/a source: 25
radial velocity -23 km/s source: 25
trigonometric parallax 0,028 ±0,003 arcsec source: 25
galactic coord. (B1950) longitude: 58,89° latitude: -15,65°
GCI unit vector (J2000) X: 0,614082 Y: -0,747934 Z: 0,251988

magnitude:

visual 3,63 (observed) source: 25
photovisual 3,7 source: 2
photographic 4,1 source: 2

spectral information:

spectral class F5 source: 96
Morgan-Keenan F5IV source: 25
B-magnitude 4,07 ±0,05 B-V-magnitude 0,44
U-magnitude 4,15 ±0,05 U-B-magnitude 0,08

double/multiple star system information:

source of data: 19
magnitude difference between brightest and second brightest component 0,7

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
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
29 SAOJ2000
SAO on FK5 at J2000, 1989
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: 20h 35min 12,206sec DEC: +14° 25' 12,31'' ±0,008 arcsec
position (J2000) RA: 20h 37min 32,956sec DEC: +14° 35' 42,63''
proper motion J1950 (FK4) RA: 0,0077 arcsec/a DEC: -0,031 arcsec/a ±0,002 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0078 arcsec/a DEC: -0,033 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,7 (accuracy: 2 decimals)
source of visual magnitude data Combined magnitude of component stars.

spectral information:

spectral class F5
source of spectral data Taken from the HD with M stars reclassified by Miss Cannon.

remarks for duplicity and variability

Double star - see source catalog for source

catalogues

source catalogue FK3, catalogue number: 771
Durchmusterung BD+14 4369
Boss General Catalogue 28709
Henry Draper Catalogue 196524

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

position and proper motion:

position (J2000) RA: 20h 37,5min DEC: +14° 36'
proper motion (J2000) RA: 0,106 arcsec/a DEC: -0,034 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 1873 often ° '' 4,1 4,8 F5IV BU 151
AB-C 1878 26 116° 27,7'' - 13,1 - HJ 5545
1961 126° 18,7''
AB-D 1829 34 344° 32,5'' - 11 - STF2704
1961 323° 42,4''
AB-E 1922 2 270° 102,7'' - - - LBZ
1960 271° 106,5''

discoverer information:

discoverer code discoverer reference
BU 151 Burnham, S.W. -
HJ 5545 Herschel, J. -
STF2704 Struve, F.G.W. -
LBZ Labitzke, P.

notes:

note Beta Del. P = 26.6yr., a = 0.447", motion direct.

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

position:

position (J1900) RA: 20h 32,8min DEC: +14° 15'

magnitudes, spectral classes, orbital elements:

author: W.S. Finsen P. Couteau
date of observation: 1936 1959
magnitude of component A: 4 4
magnitude of component B: 4 4
spectral class component B: F5IV F5IV
spectral class component B: F5IV F5IV
period [y]: 26,6 26,65
semi-major axis [arcsec]: 0,48 0,475
inclination [deg]: 62,2 63,6
node [deg]: 177,2 (ascending) 178,6 (ascending)
equinox of node: 1950
eccentricity: 0,35 0,35
time of periastron passage: 1936,18 1962,72
dates of ephemeris: 1 rev. 1959-1978
grade: definitive definitive
reference: Union Obs. Circ. 4, 461; 1938. J. Observateurs 45, 39; 1962.
other name(s) BU 151, Beta Del