HD 156846

Query : HD 156846 C.D.S. - SIMBAD4 rel 1.225 - 2015.08.31CEST06:45:17

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
HD 156846 -- Double or multiple star
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
* (BD,CPD,CSI,GC,GCRV,GEN#​,GSC,HD,HIC,HIP​,HR,PPM,SAO,SKY#​,TYC,UBV,uvby98,YZ), ** (CCDM,**,ADS,IDS,WDS), UV (FAUST,TD1), PM* (NLTT), IR (2MASS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
17 20 34.31129 -19 20 01.4991 ( Optical ) [ 5.36 2.55 90 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK5 coord. (ep=J2000 eq=2000) :
17 20 34.311 -19 20 01.50 [ 5.36 2.55 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
17 17 37.97 -19 16 56.4 [ 30.61 15.46 0 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
005.0345 +09.9823 [ 5.36 2.55 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, ~ =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
-136.65 -144.25 [0.61 0.29 0] A 2007A&A...474..653V
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, ~ =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) -68.50 [0.22] / z(~) -0.000228 [0.000001] / cz -68.49 [0.22]   (~) A 2011AAS...21743412C
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, ~ =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes mas:
21.00 [0.51] A 2007A&A...474..653V
Spectral type is made of 3 parts:
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality->E=worst quality, ~ =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
G1V C 1988MSS...C04....0H
Syntax of fluxes (or magnitudes) is : "filter-name flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, J, H, K, u, g, r, i, z
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, ~ =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (6) :
U 7.20 [~] C 2002yCat.2237....0D
B 7.10 [~] C 2002yCat.2237....0D
V 6.52 [~] C 2002yCat.2237....0D
J 5.52 [~] C 2002yCat.2237....0D
H 5.24 [~] C 2002yCat.2237....0D
K 5.17 [~] C 2002yCat.2237....0D
SIMBAD with radius arcmin
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within radius arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).

Some important notes on this object about identifications and objects associations.
essential notes:


Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1
The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

: 1
: 1 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (30) :

CCDM J17206-1920A GC 23420 IDS 17147-1914 A UBV 14770
** A 2241A GCRV 66981 2MASS J17203432-1920013 UBV M 22109
** OCC 529 GEN# +1.00156846J NLTT 44604 uvby98 100156846
ADS 10476 A GSC 06242-00339 PPM 232949 WDS J17206-1920A
BD-19 4605 HD 156846 SAO 160474 WDS J17206-1920Aa,Ab
CPD-19 6198 HIC 84856 SKY# 31278 YZ 109 7090
CSI-19 4605 1 HIP 84856 TD1 20269
FAUST 4095 HR 6441 TYC 6242-339-1

Plots and Images

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References (64 between 1850 and 2015)
Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

from: to:

                                  Sort reference summaries by : (not exhaustive, explanation here)

                                 


Measurements (14 types) :


Fe_H : 4    Hbet1 : 4    JP11 : 1    MK : 2    oRV : 3    PLX : 2    PM : 2    pos : 1    posa : 1    SAO : 1    TD1 : 1    UBV : 6   
uvby1 : 4    velocities : 4   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Catalogue information from VizieR :

Generic search by coordinates (radius: 5 arcsec)

CCDM J17206-1920A BD-19 4605 CPD-19 6198 FAUST 4095 GSC 06242-00339
HD 156846 HIC 84856 HIP 84856 HR 6441 2MASS J17203432-1920013
NLTT 44604 PPM 232949 SAO 160474 TYC 6242-339-1 WDS J17206-1920A
WDS J17206-1920Aa,Ab

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
The list of all annotations to SIMBAD objects can be found here .

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2015.08.31-06:45:17

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