Nihal


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 Nihal, b Lep, 9 Lep, HR 1829, HD 36079, SAO 170457, FK5: 204, WDS 05282-2046A
other names Nibal
constellation Lepus

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

note (category: star names): NIHAL; Nibal.

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

position, motion, parallax:

position (J2000) RA: 5h 28min 14,7sec DEC: -20 45' 34''
position (J1900) RA: 5h 23min 57,6sec DEC: -20 50' 21''
proper motion (J2000) RA: -0,004 arcsec/a DEC: -0,089 arcsec/a
radial velocity -14 km/s
note: suspected variable radial velocity
rotational velocity 11 km/s (uncertain) (variable)
trigonometric parallax 0,02 arcsec
note (category: dynamical parallaxes): 0.029".

magnitude

visual magnitude 2,84
(V on UBV Johnson system)

spectral / color information

spectral class G5II
B-V-magnitude 0,82
U-B-magnitude 0,46
R-I-magnitude 0,44

variability information

variable star identification 2008
note (category: variability): ADS 4066B, 7.0 - 11.0v.

double/multiple star system information

number of components of multiple star system 5
separation 2,6 arcsec
mag difference (of double or brightest multiple) 4,5
component ID AB
note (category: double and multiple data): AB binary; C, 12.0v at 64"; D, 10.5 at 206"; E, 10.5 at 241".

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

position, motion, parallax:

position (J2000) RA: 5h 28min 14,72sec DEC: -20 45' 34,09'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0003 arcsec/a DEC: -0,089 arcsec/a source: 25
radial velocity -14 km/s source: 25
trigonometric parallax 0,02 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 223,56 latitude: -27,2
GCI unit vector (J2000) X: 0,129146 Y: 0,926115 Z: -0,354446

magnitude:

visual 2,84 (observed) source: 25
photovisual 3 source: 2
photographic 3,5 source: 2

spectral information:

spectral class G0 source: 96
Morgan-Keenan G5II source: 25
B-magnitude 3,66 0,05 B-V-magnitude 0,82
U-magnitude 4,12 0,05 U-B-magnitude 0,46

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 2,3 arcsec
magnitude difference between brightest and second brightest component 4,5
position angle 346

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: 5h 26min 6,09sec DEC: -20 47' 52,9'' 0,006 arcsec
position (J2000) RA: 5h 28min 14,725sec DEC: -20 45' 34,28''
proper motion J1950 (FK4) RA: -0,0006 arcsec/a DEC: -0,091 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0002 arcsec/a DEC: -0,09 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

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

spectral information:

spectral class G0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 204
Durchmusterung BD-20 1096
Boss General Catalogue 6762
Henry Draper Catalogue 36079

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

position and proper motion:

position (J2000) RA: 5h 28,2min DEC: -20 46'
proper motion (J2000) RA: -0,004 arcsec/a DEC: -0,089 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 1875 40 282 2,8'' 3 7,5 G5II BU 320
1977 346 2,3''
AC 1898 4 146 65,6'' 3 12 G5II HJ 3761
1977 141 60,8''
AD 1879 1 75 206,4'' 3 10,5 G5II HJ 3761
AE 1879 1 58 241,5'' 3 10,5 G5II HJ 3761

discoverer information:

discoverer code discoverer reference
BU 320 Burnham, S.W. -
HJ 3761 Herschel, J. -

notes:

note Beta Lep. Proper motion of B -004 -089.