a Camelopardalis

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

catalogues and names a Cam, NSV 16180, 9 Cam, HR 1542, HD 30614, SAO 13298, FK5: 178
constellation Camelopardalis

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

position, motion, parallax:

position (J2000) RA: 4h 54min 3sec DEC: +66 20' 34''
position (J1900) RA: 4h 44min 6,3sec DEC: +66 10' 23''
proper motion (J2000) RA: 0 arcsec/a DEC: 0,006 arcsec/a
radial velocity 6 km/s
note: suspected variable radial velocity
rotational velocity 95 km/s (uncertain) (variable)
trigonometric parallax -0,002 arcsec


visual magnitude 4,29
(V on UBV Johnson system)

spectral / color information

spectral class O9.5Ia
B-V-magnitude 0,03
U-B-magnitude -0,88
R-I-magnitude 0
note (category: spectra): H alpha emission due to extended envelope. uv 1548 absorption strong, 1394 very strong. Central Balmer emission in blue-violet only.
note (category: colors): Color excess E(B-V) = +0.32.

miscellaneous information

note (category: group membership): In cluster NGC 1502. A possible runaway star from Cam OB1; in reflection nebula. Member assoc. Cam R1 at 870 pc.

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

position, motion, parallax:

position (J2000) RA: 4h 54min 3,016sec DEC: +66 20' 33,64'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0001 arcsec/a DEC: 0,005 arcsec/a source: 25
radial velocity 6 km/s source: 25
galactic coord. (B1950) longitude: 144,07 latitude: 14,04
GCI unit vector (J2000) X: 0,113881 Y: 0,384766 Z: 0,915962


visual 4,29 (observed) source: 25
photovisual 4,4 source: 2

spectral information:

spectral class B0 source: 96
Morgan-Keenan O9.5Ia source: 25
B-magnitude 4,32 0,05 B-V-magnitude 0,03
U-magnitude 3,44 0,05 U-B-magnitude -0,88


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
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: 4h 49min 3,825sec DEC: +66 15' 38,64'' 0,003 arcsec
position (J2000) RA: 4h 54min 3,03sec DEC: +66 20' 33,61''
proper motion J1950 (FK4) RA: 0,0006 arcsec/a DEC: 0,008 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0001 arcsec/a DEC: 0,005 arcsec/a
source of proper motion data Determined by source catalog


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

spectral information:

spectral class B0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.


source catalogue FK4, catalogue number: 178
Durchmusterung BD+66 358
Boss General Catalogue 5924
Henry Draper Catalogue 30614