Alpha Centauri

Query : Alpha Centauri

Basic data :
* alf Cen -- 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: 		* (2012ApJ,*,...), X (1E,2E,...), ** (CCDM,**,...), UV (2EUVE,EUVE,...), PM* (Ci,PM), IR (IRAS)
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • 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) : 		14 39 36.50 -60 50 02.3 (Optical) [ ] D 2001AJ....122.3466M
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • 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) : 		14 39 36.50 -60 50 02.3 [ ]
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • 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) : 		14 36 11.50 -60 37 43.1 [ ]
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • 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) : 		315.73419 -00.67964 [ ]
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 : 		-3608 686 [30 25 179] C ~
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) -22.3 [0.9] / z(~) -0.000074 [0.000003] / cz -22.30 [0.90]
   A 1979IAUS...30...57E
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): 		750.81 [0.38] B 2021AJ....162...14A
Spectral type is made of 3 parts: %coding is composed of 4 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 %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		G2V+K1V C 2006A&A...460..695T
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • 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 (2) :
B 0.4 [~] E ~
V -0.1 [~] E ~
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within 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!). sed-help-icon

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

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.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 2 		Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (34) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CCDM J14396-6050AB 1E 143555-6037.6 GES J14392972-6049560 RX J1439.5-6050
* alf Cen 2E 3308 IDS 14328-6025 AB 1RXS J143940.4-605020
** RHD 1 2E 1435.9-6037 IRAS 14359-6037 SAO 252838
** LDS 494AB 1ES 1435-60.6 LPM 534 uvby98 100128620
CD-60 5293 2EUVE J1439-60.8 PM 14362-6038 WDS J14396-6050AB
Ci 20 875 EUVE J1439-60.8 2RE J143941-605000 2XMM J143933.0-605008
CPD-60 5483 FK5 538 2RE J1439-605 [TSA98] J143948.42-605021.66
CSI-60 5483 43 GC 19728 RE J1439-605
1E 143556-6037.3 GCRV 8519 RE J143944-605008

References (183 between 2019 and 2024) (Total 958)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements


velocities : 3    Fe_H : 1    PLX : 1    PM : 2   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

velocities (3) 

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |  -22.2         0.9    |E ( 124)|s , ,    ,           |          |       |  |1953GCRV..C......0W|

fe_h (1) 

 | Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 ------------------------------------------------------------
 |  5781 4.26  | 0.25   |SUN      |     |2016A&A...589A.115S|

plx (1) 

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 | 750.81    :   0.38       |2021AJ....162...14A|

pm (2) 

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |-3606    [         ]| +705    [         ]|FK4 |1933GCCat.C......0B|
Observing logs


ISO : 5    XMM : 7   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

iso (5)

The 2 columns in color are computed by VizieR, and are not part of the original data.
Note: Quick-look images of the data, and specific documentation, are accessible by clicking on the TDT observation identifier
VI/111/isolog
Post annotation 		ISO Observation Log (ISO Data Centre, 2004) [ReadMe+ftp]

*The ISO Observation Log[image] (36737 rows) (Note)		img(gal)
start AladinLite 
 Full      _r        TDT    AOT    minLam  maxLam  Target                                 oStart         oLen    recno   FOV                  RAJ2000   DEJ2000 cal  ObsID    abs  PropID  
        arcmin                      um      um                                             s             s                                     deg       deg                              


    1     0.173  60702006  SWS01    2.38   45.20  Alpha Cen A                     1997-07-15T10:59:38   6538     25731  33"x20"             219.9079  -60.8345      CWAELKEN +    STARMOD 
    2     0.186  29400809  SWS01    2.38   45.20  Alpha Cen                       1996-09-05T21:48:50   1140     12512  33"x20"             219.9069  -60.8360      SPRICE   +    STARTYP1
    3     0.205  29400702  PHT32   54.76   71.44  alpCenB                         1996-09-05T21:33:44    854     12511  195"x345"           219.9077  -60.8360      RSTENCEL      VEGADISY
    4     0.338  08902710  PHT32   54.76   71.44  alpCenB                         1996-02-14T19:44:12    822      2907  195"x345"           219.8913  -60.8360      RSTENCEL +    VEGADIS2
    5     0.362  07902909  SWS01    2.38   45.21  Alpha Cen                       1996-02-04T17:42:53   1044      2504  33"x20"             219.8905  -60.8361      SPRICE   +    STARTYP1

xmm (7)

The 3 columns in color are computed by VizieR, and are not part of the original data.
B/xmm/xmmlog
Post annotation 		XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2012) [ReadMe+ftp]
2002yCat....102009X

The XMM-Newton Observation log (2024-06-03)[image/fits] (17762 rows)		img(gal)
start AladinLite 
 Full      _r        Obsno     PropDate   Object                           RAJ2000    DEJ2000           Obs0          ObsDur Image  PPSp   FITS XSAlink
        arcmin                    s                                         deg        deg              s              s                             


    1    0.0858  0045340901  2005-08-27  Alpha Centauri                  219.90090  -60.83528  2003-03-04T13:49:39    20883 FITS       PPSp  0045340901 Y
    2    0.0858  0045340301  2005-08-27                                  219.90090  -60.83528  2003-07-31T14:19:37       21 N      PPSp  0045340301 Y
    3    0.0858  0045341001  2005-08-27  Alpha Centauri                  219.90090  -60.83528  2003-09-15T14:54:47     7844 FITS       PPSp  0045341001 Y
    4    0.0858  0045341101  2005-08-27  Alpha Centauri                  219.90090  -60.83528  2004-01-29T14:15:33     5453 FITS       PPSp  0045341101 Y
    5    0.0858  0045340401  2005-08-27  Alpha Centauri                  219.90090  -60.83528  2004-07-29T03:47:30     7910 FITS       PPSp  0045340401 Y
    6    0.0858  0143630501  2006-02-21  Alpha Cen                       219.90090  -60.83528  2005-02-01T14:46:18     9020 FITS       PPSp  0143630501 Y

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Alpha Centauri

Link by name to the catalogue in VizieR :

CCDM J14396-6050AB CD-60 5293 CPD-60 5483 2E 3308 EUVE J1439-60.8
FK5 538 IRAS 14359-6037 2RE J143941-605000 2RE J1439-605 1RXS J143940.4-605020
SAO 252838 uvby98 100128620 WDS J14396-6050AB

Search by coordinates in Vizier (radius: 20 arcsec)

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 .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

Currently no annotations available

add an annotation to this object

report an error concerning the data of this object