r Orionis


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 (suspected variables)


catalogues and names r Ori, NSV 01872, 17 Ori, HR 1698, HD 33856, SAO 112528, WDS 05133+0252A
constellation Orion

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: 5h 13min 17,5sec DEC: +2 51' 40''
position (J1900) RA: 5h 8min 3,7sec DEC: +2 44' 32''
proper motion (J2000) RA: 0,001 arcsec/a DEC: -0,006 arcsec/a
radial velocity 41 km/s
note: spectroscopic binaries, single lined spectra
note: orbital data avaible
rotational velocity <17 km/s (uncertain) (variable)
trigonometric parallax -0,01 arcsec
note (category: dynamical parallaxes): 0.001".

magnitude

visual magnitude 4,46
(V on UBV Johnson system)

spectral / color information

spectral class K0.5III
B-V-magnitude 1,19
U-B-magnitude 1,16
R-I-magnitude 0,59
note (category: spectra): Also classified K0.5III.

variability information

variable star identification 1872

double/multiple star system information

number of components of multiple star system 3
separation 6,9 arcsec
mag difference (of double or brightest multiple) 3,9
component ID AB
note (category: double and multiple data): AB fixed. B, 8.4v, F7V at 7"; C, 11.8 at 182".
note (category: spectroscopic binaries): ADS 3797A, 1031.40d, K 8.7k/s, V0 +40.5k/s, asini 123. Unresolved by speckle interferometry.

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

position, motion, parallax:

position (J2000) RA: 5h 13min 17,487sec DEC: +2 51' 40,56'' 0,35 arcsec source: 17
proper motion (J2000) RA: 0,0004 arcsec/a DEC: 0,002 arcsec/a source: 25
radial velocity 41 km/s source: 25
galactic coord. (B1950) longitude: 198,52 latitude: -20,27
GCI unit vector (J2000) X: 0,202144 Y: 0,978083 Z: 0,049918

magnitude:

visual 4,46 (observed) source: 25
photovisual 4,6 source: 2
photographic 5,8 source: 16

spectral information:

spectral class K0 source: 96
Morgan-Keenan K1IIICN0.5 source: 25
B-magnitude 5,65 0,05 B-V-magnitude 1,19
U-magnitude 6,81 0,05 U-B-magnitude 1,16

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 6,9 arcsec
magnitude difference between brightest and second brightest component 3,8
position angle 64

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
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
17 ACRS
Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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 10min 40,482sec DEC: +2 48' 11,68'' 0,016 arcsec
position (J2000) RA: 5h 13min 17,46sec DEC: +2 51' 39,83''
proper motion J1950 (FK4) RA: -0,0002 arcsec/a DEC: -0,005 arcsec/a 0,003 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0 arcsec/a DEC: -0,006 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,6 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue GC, catalogue number: 6381
Durchmusterung BD+02 888
Boss General Catalogue 6381
Henry Draper Catalogue 33856

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

position and proper motion:

position (J2000) RA: 5h 13,3min DEC: +2 52'
proper motion (J2000) RA: 0,006 arcsec/a DEC: 0,002 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 1831 42 64 7,1'' 4,6 8,4 K2II STF 654
1987 - 6,9''
AC 1913 1 155 182,4'' 4,6 11,8 - STF 654

discoverer information:

discoverer code discoverer reference
STF 654 Struve, F.G.W. -

notes:

note Rho Ori. A is a long-period spectroscopic binary, P = 1031.4d.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 5h 10min 40,5sec DEC: +2 48' 12''

variability informations:

magnitute at max. brightness 4,42
magnitute at min. brightness 4,48
photometric system visual, photovisual or Johnson's V

spectral information

spectral class K3

references

to a study 0807D (designation: 46G ORI)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).