h Carinae

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. Combined General Catalogue of Variable Stars (Vol. I-III)

catalogues and names h Car, eta Car, HR 4210, HD 93308, SAO 238429, WDS 10451-5941A
constellation Carina

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


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

position, motion, parallax:

position (J2000) RA: 10h 45min 3,6sec DEC: -59° 41' 3''
position (J1900) RA: 10h 41min 10,8sec DEC: -59° 9' 31''
proper motion (J2000) RA: -0,004 arcsec/a DEC: 0,009 arcsec/a
radial velocity -25 km/s

magnitude

visual magnitude 6,21
(V on UBV Johnson system)

spectral / color information

spectral class pec
B-V-magnitude 0,61
U-B-magnitude -0,45
R-I-magnitude 0,49
note (category: colors): Infrared color excess.

variability information

variable star identification *h Car
note (category: variability): Comp. A of double. SN? S Dor type, -0.8 - 7.9v. Abs. mag. -14 in 1843. Massive star surrounded by expanding gas and dust shell; soft X-ray source.

double/multiple star system information

number of components of multiple star system 15
separation 0,2 arcsec
mag difference (of double or brightest multiple) 0,1
component ID AP
note Worley (1978) update of the IDS

miscellaneous information

note (category: group membership): HII region R51; may be member of cluster TR 16.

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

position, motion, parallax:

position (J2000) RA: 10h 45min 3,591sec DEC: -59° 41' 4,26'' ±0,19 arcsec source: 16
proper motion (J2000) RA: -0,001 arcsec/a DEC: 0,001 arcsec/a source: 25
radial velocity -25 km/s source: 25
galactic coord. (B1950) longitude: 287,6° latitude: -0,63°
GCI unit vector (J2000) X: -0,478016 Y: 0,162125 Z: -0,863259

magnitude:

visual 6,21 (observed) source: 25

spectral information:

spectral class Pec source: 29
B-magnitude 6,82 ±0,05 B-V-magnitude 0,61
U-magnitude 6,37 ±0,05 U-B-magnitude -0,45

variability information:

source of data: 30
variability type 350
var. amplitude 8,7

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 0,2 arcsec
magnitude difference between brightest and second brightest component 0,1
position angle 195 °

component magnitude spectral class catalogue(s)/name(s)
A 6,21 Pec h Carinae, HR 4210, HD 93308, SAO 238429
B 8,16 Oe5

sources:

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
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
30 GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (J1950) RA: 10h 43min 6,902sec DEC: -59° 25' 15,86'' ±0,015 arcsec
position (J2000) RA: 10h 45min 3,631sec DEC: -59° 41' 3,45''
proper motion J1950 (FK4) RA: -0,0003 arcsec/a DEC: 0,006 arcsec/a ±0,002 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0006 arcsec/a DEC: 0,009 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 10 (accuracy: 1 decimal)
source of visual magnitude data Source cited in source catalog introduction.

spectral information:

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

remarks for duplicity and variability

Both double and variable, in either visual or photographic magnitudes

catalogues

source catalogue GC, catalogue number: 14799
Durchmusterung CP-59 2620
Boss General Catalogue 14799
Henry Draper Catalogue 93308

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

position and proper motion:

position (J2000) RA: 10h 45,1min DEC: -59° 41'
proper motion (J2000) RA: -0,008 arcsec/a DEC: 0,003 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
Aa 1933 3 195° 0,2'' 8,5 8,6 pec B 2256
Aa-B 1915 10 317° 1'' 7,8 11,1 - I 1092
1947 - 1,6''
Aa-C 1914 12 74° 1'' 7,8 10,9 - I 1092
1947 63° 1,3''
Aa-Q - 315° 0,8'' 7,8 12 - B 2256
Aa-S 1934 1 103° 4,4'' 7,8 14,4 - B 2256
Aa-U 1933 1 141° 4'' 7,8 14,3 - I 1092
Aa-D 1928 3 304° 4,1'' 7,8 13,6 - I 1092
Aa-E 1913 - 60° 13,6'' 7,8 12 - HJ 4366
Aa-F 1897 - 41° 13,9'' 7,8 11,7 - HJ 4366
Aa-G 1859 - 67° 38,5'' 7,8 10,2 - HJ 4366
Aa-H 1826 - 17° 61,1'' 7,9 8,17 - DUN 98

discoverer information:

discoverer code discoverer reference
B 2256 Bos, W.H. van den -
I 1092 Innes, R.T.A. -
HJ 4366 Herschel, J. -
DUN 98 Dunlop, J. -

notes:

note Eta Car, an old nova in a nebula with nuclei. Variable.

data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)

position:

position (J1950) RA: 10h 43min 6,9sec DEC: -59° 25' 16''

variability informations:

variability type SDOR eruptive variable star
magnitute at max. brightness -0,8
magnitute at min. brightness 7,9
photometric system visual, photovisual or Johnson's V

spectral information

spectral class pec(e)

references

to a study Vol. I GCVS (see Kholopov et al. 1985-1988)
to a chart/photograph Vol. I GCVS (see Kholopov et al. 1985-1988)

miscanellous

ID in the GCVS catalogue 17/9007
constellation Carina
notes on existence The star is equivalent to '0179022 khi'.
There are notes in published catalog.

variability type description

variability type description
SDOR Variables of the S Doradus type. These are eruptive, high-luminosity Bpec-Fpec stars showing irregular (sometimes cyclic) light changes with amplitudes in the range 1-7 mag in V.
They belong to the brightest blue stars of their parent galaxies. As a rule, these stars are connected with diffuse nebulae and surrounded by expanding envelopes (P Cyg, Eta Car).