36 Oph

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 36 Oph, HR 6401, HD 155885, SAO 185199, WDS 17153-2636B
constellation Ophiuchus

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: 17h 15min 21sec DEC: -26° 36' 10''
position (J1900) RA: 17h 9min 11,7sec DEC: -26° 27' 21''
proper motion (J2000) RA: -0,458 arcsec/a DEC: -1,142 arcsec/a
radial velocity 0 km/s
note: suspected variable radial velocity
trigonometric parallax 0,188 arcsec
note (category: dynamical parallaxes): 0.177".

magnitude

visual magnitude 5,11
(V on UBV Johnson system)

spectral / color information

spectral class K1V
B-V-magnitude 0,86
U-B-magnitude 0,53

double/multiple star system information

number of components of multiple star system 5
separation 4,6 arcsec
mag difference (of double or brightest multiple) 0
component ID AB
note (category: double and multiple data): Binary with HR 6402, q.v. CPM with CoD-26d12036, 6.34v K5V at 700", same parallax.

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

position, motion, parallax:

position (J2000) RA: 17h 15min 21,016sec DEC: -26° 36' 9,98'' ±1,48 arcsec source: 29
proper motion (J2000) RA: -0,0342 arcsec/a DEC: -1,142 arcsec/a source: 25
radial velocity 0 km/s source: 25
trigonometric parallax 0,188 ±0,019 arcsec source: 25
galactic coord. (B1950) longitude: 358,3° latitude: 6,88°
GCI unit vector (J2000) X: -0,173096 Y: -0,877218 Z: -0,447802

magnitude:

visual 5,11 (observed) source: 25
photovisual 5,3 source: 2
photographic 6,3 source: 2

spectral information:

spectral class K0 source: 29
Morgan-Keenan K1V source: 25
B-magnitude 5,97 ±0,05 B-V-magnitude 0,86
U-magnitude 6,5 ±0,05 U-B-magnitude 0,53

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 4,6 arcsec
magnitude difference between brightest and second brightest component 0
position angle 150 °

component magnitude spectral class catalogue(s)/name(s)
A 5,07 K0 36 Oph, HR 6402, HD 155886, SAO 185198
B 5,11 K0 36 Oph, HR 6401, HD 155885, SAO 185199
C 6,34 K2

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
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

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

position and proper motion:

position (J1950) RA: 17h 12min 16,22sec DEC: -26° 31' 52,28'' ±0,021 arcsec
position (J2000) RA: 17h 15min 21,016sec DEC: -26° 36' 9,98''
proper motion J1950 (FK4) RA: -0,0345 arcsec/a DEC: -1,141 arcsec/a ±0,004 arcsec/a in RA
±0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0342 arcsec/a DEC: -1,142 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 5,3 (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: 23274
Durchmusterung CD-2612026B
Boss General Catalogue 23274
Henry Draper Catalogue 155885

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

position and proper motion:

position (J2000) RA: 17h 15,3min DEC: -26° 36'
proper motion (J2000) RA: -0,48 arcsec/a DEC: 0 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 1822 often 227° 5,7'' 5,3 5,3 K0V K1V SHJ 243
1991 150° 4,6''
AC 1960 1 74° 732'' 6,3 6,34 K5Ve SHJ 243
AD 1823 7 286° 195,7'' 5,3 8,2 G8III/IV SHJ 243
1905 315° 208''
Aa 1898 2 298° 38,6'' 5,3 13,5 - SHJ 243
BD 1825 3 288° 93,7'' 5,3 8 - SHJ 243
1905 316° 110,8''

discoverer information:

discoverer code discoverer reference
SHJ 243 South & Herschel -

notes:

note 36 Oph. Proper motion -480 -1142. A premature orbit has been computed. A may be a spectroscopic binary. AC: Proper motion of C -481 -1134. C has common proper motion.