d Monocerotis


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 d Mon, 22 Mon, HR 2714, HD 55185, SAO 134330, FK5: 1187, WDS 07119-0030
constellation Monoceros

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


position, motion, parallax:

position (J2000) RA: 7h 11min 51,9sec DEC: -0 29' 34''
position (J1900) RA: 7h 6min 45,4sec DEC: -0 19' 37''
proper motion (J2000) RA: -0,001 arcsec/a DEC: 0,005 arcsec/a
radial velocity 15 km/s
note: variable radial velocity
rotational velocity 142 km/s (uncertain) (variable)
trigonometric parallax 0,016 arcsec

magnitude

visual magnitude 4,15
(V on UBV Johnson system)

spectral / color information

spectral class A2V
B-V-magnitude -0,01
U-B-magnitude 0,02
R-I-magnitude 0,01

double/multiple star system information

separation 32 arcsec
mag difference (of double or brightest multiple) 9,2

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

position, motion, parallax:

position (J2000) RA: 7h 11min 51,855sec DEC: -0 29' 33,99'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0001 arcsec/a DEC: 0,005 arcsec/a source: 25
radial velocity 15 km/s source: 25
trigonometric parallax 0,016 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 215,71 latitude: 4,32
GCI unit vector (J2000) X: -0,308442 Y: 0,951204 Z: -0,0086

magnitude:

visual 4,15 (observed) source: 25
photovisual 4,1 source: 2

spectral information:

spectral class A0 source: 96
Morgan-Keenan A2V source: 25
B-magnitude 4,14 0,05 B-V-magnitude -0,01
U-magnitude 4,16 0,05 U-B-magnitude 0,02

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 32 arcsec
magnitude difference between brightest and second brightest component 8,9
position angle 170

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: 7h 9min 18,62sec DEC: -0 24' 30,42'' 0,005 arcsec
position (J2000) RA: 7h 11min 51,859sec DEC: -0 29' 33,91''
proper motion J1950 (FK4) RA: -0,0003 arcsec/a DEC: 0,005 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0 arcsec/a DEC: 0,007 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,1 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

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

catalogues

source catalogue FK4, catalogue number: 1187
Durchmusterung BD-00 1636
Boss General Catalogue 9518
Henry Draper Catalogue 55185

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

position and proper motion:

position (J2000) RA: 7h 11,9min DEC: -0 30'
proper motion (J2000) RA: -0,001 arcsec/a DEC: 0,005 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
- 1910 1 170 32'' 4,15 13 A2V J 58

discoverer information:

discoverer code discoverer reference
J 58 Jonckheere, R. (Journal Astronomique No.17; 1912.)

notes:

note Delta Mon.