Alfa Microscopii

Query : Alfa Microscopii
C.D.S. - SIMBAD4 rel 1.7 - 2018.10.23CEST04:33:39

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


Basic data :
* alf Mic -- 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:
* (*,CD,...), ** (CCDM,IDS,...), IR (AKARI,IRAS,...), X (RBS,1RXS), UV (TD1)
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 defined epoch and convolved with error on propermotion),
    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) :
20 49 58.0767496899 -33 46 46.997429373 (Optical) [ 0.4546 0.1839 90 ] A 2018yCat.1345....0G
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 defined epoch and convolved with error on propermotion),
    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) :
20 46 50.9396072880 -33 57 58.112496685 [ 16.8062 14.2512 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 defined epoch and convolved with error on propermotion),
    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) :
009.8802766366830 -38.2637057019275 [ 0.4546 0.1839 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 :
18.426 -19.546 [0.336 0.285 90] A 2018yCat.1345....0G
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) -14.50 [0.09] / z(spectroscopic) -0.000048 [0.000000] / cz -14.50 [0.09]
   (Opt) A 2015A&A...574A..50J
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):
8.2214 [0.6173] A 2018yCat.1345....0G
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:
G8III C 1982MSS...C03....0H
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 (6) :
B 5.879 [0.015] D 2000A&A...355L..27H
V 4.890 [0.009] D 2000A&A...355L..27H
G 4.5865 [0.0031] C 2018yCat.1345....0G
J 2.849 [0.157] D 2003yCat.2246....0C
H 2.325 [0.172] D 2003yCat.2246....0C
K 2.267 [0.178] D 2003yCat.2246....0C
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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

* alf Mic GEN# +1.00198232 N30 4608 TD1 27294
AKARI-IRC-V1 J2049581-334647 GSC 07465-01445 PLX 4969 TYC 7465-1445-1
CCDM J20500-3347A HD 198232 PLX 4969.00 UBV 18014
CD-34 14660 HIC 102831 PPM 300665 UBV M 25181
CPC 17 11370 HIP 102831 RBS 1703 WDS J20500-3347A
CPD-34 8799 HR 7965 1RXS J204958.4-334652 WEB 18651
CSI-34 14660 21 IDS 20437-3409 A SAO 212472 Gaia DR2 6780065098937236096
GC 29026 IRAS 20468-3357 SKY# 39532
GCRV 13062 2MASS J20495810-3346471 SRS 44478

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References (31 between 1850 and 2018) (Total 31)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)


Collections of Measurements


distance : 1    velocities : 7    ROT : 1    PM : 5    Fe_H : 6    PLX : 4    MK : 1   

   

Observing logs


ISO : 1   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Alfa Microscopii

Link by name to the catalogue in VizieR :

AKARI-IRC-V1 J2049581-334647 CCDM J20500-3347A CD-34 14660 CPD-34 8799 GSC 07465-01445
HD 198232 HIC 102831 HIP 102831 HR 7965 IRAS 20468-3357
2MASS J20495810-3346471 PLX 4969 PPM 300665 1RXS J204958.4-334652 SAO 212472
TD1 27294 TYC 7465-1445-1 WDS J20500-3347A Gaia DR2 6780065098937236096

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Annotations :
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The list of all annotations to SIMBAD objects can be found here .

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2018.10.23-04:33:39

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