HD197481

Query : HD197481 C.D.S. - SIMBAD4 rel 1.225 - 2015.08.02CEST16:25:56

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


Basic data :
V* AU Mic -- Variable of BY Dra type
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,CPC,CPD,GCRV,GEN#,GJ​,HD,HIC,HIP,MCC​,PLX,PPM,SAO,TYC​,UBV,UGP,Zkh,[L91b],[RHG95]), X (1AXG,2E,RBS,RE,RX,1RXS​,[FS2003]), IR (AKARI,IRAS,2MASS,WISE), ** (CCDM,IDS,WDS), PM* (Ci,LTT,NLTT), V* (V*,ASAS,1SWASP), UV (2EUVE,EUVE,2RE), Fl* ([GKL99]), BY* (Ref)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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) :
20 45 09.53147 -31 20 27.2425 ( Optical ) [ 11.07 6.41 90 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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) :
20 45 09.531 -31 20 27.24 [ 11.07 6.41 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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) :
20 42 03.79 -31 31 05.6 [ 63.33 38.14 0 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (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) :
012.6546 -36.8025 [ 11.07 6.41 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 :
279.96 -360.61 [1.26 0.73 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) -4.50 [0.25] / z(~) -0.000015 [0.000001] / cz -4.50 [0.25]   (~) 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:
100.91 [1.06] 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:
M1Ve C 2006A&A...460..695T
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) :
B 10.05 [~] C ~
V 8.627 [0.052] C 2012AcA....62...67K
I 6.593 [0.029] C 2012AcA....62...67K
J 5.436 [0.017] C 2003yCat.2246....0C
H 4.831 [0.016] C 2003yCat.2246....0C
K 4.529 [~] D 2010PASP..122..885S
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!).

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

: 2 : 286 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (49) :

V* AU Mic EUVE J2045-31.3 NLTT 49807 TYC 7457-641-1
AKARI-IRC-V1 J2045097-312029 GCRV 12995 PLX 4939 UBV 17963
ASAS J204510-3120.4 GEN# +1.00197481 PLX 4939.00 UGP 505
ASAS J204509-3120.3 GJ 803 PPM 300560 WDS J20452-3120A
1AXG J204508-3119 HD 197481 RBS 1695 WISE J204509.76-312030.9
CCDM J20451-3122A HIC 102409 2RE J2045-312 Zkh 310
CD-31 17815 HIP 102409 2RE J204510-312000 [FS2003] 1089
Ci 20 1225 IDS 20390-3142 A RE J2045-312 [GKL99] 394
CPC 17 11323 IRAS 20420-3131 RE J204509-312004 [L91b] 329
CPD-31 6335 IRAS F20420-3131 RX J2045.2-3120 [RHG95] 3241
2E 4416 LTT 8214 1RXS J204509.4-312023
2E 2042.0-3131 2MASS J20450949-3120266 SAO 212402
2EUVE J2045-31.3 MCC 824 1SWASP J204509.52-312027.2

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References (700 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).

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Measurements (20 types) :


diameter : 2    distance : 2    Einstein : 1    GEN : 1    GJ : 1    IRAS : 1    ISO : 3    IUE : 149    MK : 8    oRV : 6    PLX : 8    PM : 2   
pos : 1    posa : 1    ROT : 2    SAO : 1    UBV : 4    V* : 3    velocities : 7    XMM : 1   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database

Catalogue information from VizieR :

Generic search by coordinates (radius: 10 arcsec)

V* AU Mic CCDM J20451-3122A CD-31 17815 CPD-31 6335 EUVE J2045-31.3
GJ 803 HD 197481 HIC 102409 HIP 102409 IRAS 20420-3131
IRAS F20420-3131 2MASS J20450949-3120266 NLTT 49807 PPM 300560 2RE J2045-312
2RE J204510-312000 1RXS J204509.4-312023 SAO 212402 TYC 7457-641-1 WDS J20452-3120A
[GKL99] 394 [L91b] 329

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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2015.08.02-16:25:56

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