Miram


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 Miram, h Per, NSV 15587, 15 Per, HR 834, HD 17506, SAO 23655, FK5: 99, WDS 02507+5554A
other names Miram in Becvar
constellation Perseus

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

note (category: star names): Miram in Becvar; Allen says unnamed.

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

position, motion, parallax:

position (J2000) RA: 2h 50min 41,8sec DEC: +55 53' 44''
position (J1900) RA: 2h 43min 23,8sec DEC: +55 28' 50''
proper motion (J2000) RA: 0,017 arcsec/a DEC: -0,014 arcsec/a
radial velocity -1 km/s
note: spectroscopic binaries
rotational velocity =<54 km/s (uncertain) (variable)
trigonometric parallax 0,006 arcsec

magnitude

visual magnitude 3,76
(V on UBV Johnson system)

spectral / color information

spectral class K3-Ib-IIa
B-V-magnitude 1,68
U-B-magnitude 1,89
R-I-magnitude 0,89
note (category: spectra): Ultraviolet FeII emission. Also classified K3Ib.
note (category: colors): Large infrared excess.

double/multiple star system information

number of components of multiple star system 6
separation 28,3 arcsec
mag difference (of double or brightest multiple) 4,7
component ID AB
note (category: double and multiple data): Component B, B9V, CPM, vsini 149k/s.

miscellaneous information

note (category: group membership): Red star Pleiades group.

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

position, motion, parallax:

position (J2000) RA: 2h 50min 41,811sec DEC: +55 53' 43,8'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,002 arcsec/a DEC: -0,014 arcsec/a source: 25
radial velocity -1 km/s source: 25
trigonometric parallax 0,006 0,001 arcsec source: 25
galactic coord. (B1950) longitude: 139,15 latitude: -3,18
GCI unit vector (J2000) X: 0,412241 Y: 0,380061 Z: 0,828016

magnitude:

visual 3,76 (observed) source: 25
photovisual 3,9 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K3-Ib-IIa source: 25
B-magnitude 5,44 0,05 B-V-magnitude 1,68
U-magnitude 7,33 0,05 U-B-magnitude 1,89

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 28,3 arcsec
magnitude difference between brightest and second brightest component 4,74
position angle 301

component magnitude spectral class catalogue(s)/name(s)
A 3,76 K0 Miram, h Persei, 15 Per, HR 834, HD 17506, SAO 23655
B 8,5 A0

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: 2h 47min 1,935sec DEC: +55 41' 22,43'' 0,004 arcsec
position (J2000) RA: 2h 50min 41,826sec DEC: +55 53' 43,73''
proper motion J1950 (FK4) RA: 0,0023 arcsec/a DEC: -0,011 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0022 arcsec/a DEC: -0,015 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

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

spectral information:

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

catalogues

source catalogue FK4, catalogue number: 99
Durchmusterung BD+55 714
Boss General Catalogue 3390
Henry Draper Catalogue 17506

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

position and proper motion:

position (J2000) RA: 2h 50,7min DEC: +55 54'
proper motion (J2000) RA: 0,017 arcsec/a DEC: -0,014 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 1836 23 301 28,3'' 3,76 8,5 M3Ib-IIa STF 307
AC 1878 5 268 66,6'' 3,9 9,9 - STF 307
AE 1821 2 205 238,1'' 3,9 - - SHJ 34
CD 1878 6 114 5,2'' 9,9 10,4 - WAR 1

discoverer information:

discoverer code discoverer reference
STF 307 Struve, F.G.W. -
SHJ 34 South & Herschel -
WAR 1 Warren, O.C.R. (Pub. Wanganui Astron. Soc. No. 1; 1992.)

notes:

note Eta Per. A is a spectroscopic binary. B is BD+55@712. Proper motion of B +016 -012.