xz tau

Basic data :
V* XZ Tau -- Orion Variable 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: X (1AXG,2E,...), * (GSC,CSI,...), V* (2018AJ,AN,...), Y*O (2010ApJS,[GMM2009]), ** (2013AJ,**,...), MIR (AKARI,WISEA,...), TT* (1999AJ), Or* (2012ApJ), Opt (ATO,SDSS), HH (HH), Em* (HBC), Rad (GBS), UV (XEST), IR (SSV) 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) : 04 31 40.0868968022 +18 13 56.642439056 (Optical) [ 1.2980 0.8028 90 ] C 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] : 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) : 04 28 46.0364651059 +18 07 34.878924777 [ 1.2980 0.8028 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] : 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) : 178.8635772112732 -19.9675267822519 [ 1.2980 0.8028 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 : 9.1 -17.8 [2.0 2.0 135] B 2003yCat.1289....0Z 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) 18.300 [0.040] / z(~) 0.000061 [0.000000] / cz 18.30 [0.04]    (Opt) A 2012ApJ...745..119N 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: M2e+M2e C 2003ApJ...583..334H 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 (11) : V 10.40 [~] C 2002yCat.2237....0D R 13.12 [~] E 2003yCat.1289....0Z G 12.9076 [0.0046] C 2018yCat.1345....0G J 9.385 [0.027] C 2003yCat.2246....0C H 8.15 [0.04] C 2003yCat.2246....0C K 7.291 [0.024] C 2003yCat.2246....0C u (AB) 17.217 [0.009] C 2009ApJS..182..543A g (AB) 15.272 [0.004] C 2009ApJS..182..543A r (AB) 13.714 [0.003] C 2009ApJS..182..543A i (AB) 16.512 [0.014] D 2009ApJS..182..543A z (AB) 14.472 [0.013] D 2009ApJS..182..543A	SIMBAD within arcmin ', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay points in this preview 2MASS DSS SDSSXMMIRACIRISGALEX All (CDSPortal) Send to 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!).
Some important notes on this object about identifications and objects associations. notes: The close companion ** GHE 9B = WDS J04317+1814Ab is often named "XZ Tau B" in the literature. Not to be confused with ** HER 10B = WDS J04317+1814B = V* HL Tau

GSC 01269-00171	GCRV 2653	V* XZ Tau	[CFK96] ASCA 2
** GHE 9	Haro 6-15	WDS J04317+1814A	[FGM2003] 31
** HER 10A	HBC 50	WDS J04317+1814Aa,Ab	[FGM2003] S18
AKARI-IRC-V1 J0431400+181357	HH 152	WEB 4064	[FK83] LDN 1551 10
AN 381.1928	2MASS J04314007+1813571	WISEA J043140.06+181357.0	[GBA2007] 1324
ATO J067.9169+18.2324	RX J043140.0+181354	WISE J043140.09+181357.0	[GMM2009] Tau L1551 7
1AXG J043141+1813	1RXS J043141.0+181335	XEST 22-OM-002	[LC2009] 4
CSI+18-04288	SDSS J043140.08+181356.8	XEST 22-047	AAVSO 0425+18
2E 1073	SSV LDN 1551 2	2XMM J043140.0+181356	Gaia DR2 3314312604605602688
2E 0428.7+1807	SV* SVS 169	[ABG2007] 1373
EPIC 210690892	TIC 353752576	[BFR2003] 37
GBS-VLA J043140.09+181356.7	UCAC2 38202584	[CFK96] RX 19

References (434 between 1850 and 2023) (Total 434) 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

Collections of Measurements

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : xz tau

Link by name to the catalogue in VizieR :

Search by coordinates in Vizier (radius: 5 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

Store this result in Votable, in Ascii, or in the CDS portal

To bookmark this query, right click on this link: simbad:xz tau and select 'bookmark this link' or equivalent in the popup menu