tau per

Basic data :
* tau Per -- Eclipsing Binary 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: EB* (), * (*,AG,...), ** (**,ADS,...), V* (CSV,NSV,...), IR (IRAS,IRC,...), SB* (SBC7,SBC9), UV (CEL,TD1), NIR (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] : 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) : 02 54 15.4777208304 +52 45 44.882735292 (Optical) [ 0.1312 0.1913 90 ] A 2020yCat.1350....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 FK5 coord. (ep=J2000 eq=2000) : 02 54 15.4810623173 +52 45 44.875614645 [ 0.1312 0.1913 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 FK4 coord. (ep=B1950 eq=1950) : 02 50 41.9183635506 +52 33 33.638072032 [ 0.1312 0.1913 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) : 141.0238857517996 -05.7406406616370 [ 0.1312 0.1913 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 : -8.311 -2.580 [0.172 0.254 90] A 2020yCat.1350....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) 2.20 [0.7] / z(~) 0.000007 [0.000002] / cz 2.20 [0.70]    A 2006AstL...32..759G 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): 12.3726 [0.2317] A 2020yCat.1350....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+A7V C 2008ApJS..176..216A 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 (9) : U 5.17 [~] C 2002yCat.2237....0D B 4.71 [~] C 2002yCat.2237....0D V 3.96 [~] C 2002yCat.2237....0D R 3.33 [~] C 2002yCat.2237....0D G 3.707698 [0.003168] C 2020yCat.1350....0G I 2.89 [~] C 2002yCat.2237....0D J 2.55 [~] C 2002yCat.2237....0D H 2.309 [0.232] D 2003yCat.2246....0C K 2.01 [~] C 2002yCat.2237....0D	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!).

* tau Per	FK5 103	JP11 712	TD1 1722
* 18 Per	GC 3462	2MASS J02541545+5245448	TIC 285667894
* tau Per B	GCRV 1615	N30 591	TYC 3701-1394-1
* tau Per A	GEN# +1.00017879	NSV 978	UBV 21533
** LAB 1	GEN# +1.00017878	PLX 597	UBV M 9198
ADS 2202 A	GSC 03701-01394	PMC 90-93 74	UBV M 9199
AG+52 312	HD 17879	PPM 28080	V* tau Per
BD+52 641	HD 17878	RAFGL 4231S	WDS J02543+5246Aa,Ab
CCDM J02543+5246A	HIC 13531	ROT 388	WDS J02543+5246A
CEL 297	HIP 13531	SAO 23685	WEB 2699
CSI+52 641 3	HR 854	SBC7 104	AAVSO 0247+52
CSI+52 641 1	IDS 02472+5221 A	SBC9 148	Gaia DR3 441161693272718336
CSI+52 641 2	IRAS 02506+5233	SKY# 4357	Gaia DR2 441161693272720640
CSV 100243	IRC +50077	SV* ZI 159

References (9 between 2018 and 2023) (Total 165) 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

velocities (15)

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |    8.59        3.28   |C (   4)|s , ,O   ,           |          |       |  |2018yCat.1345....0G|
 

v* (1)

 |     vartyp     |    Vmax     p     Vmin    |   period   | epoch (JD)   |D/rt %|     reference     |
 -----------------------------------------------------------------------------------------------------
 |                |   3.94    : V    3.98    :|            |              |      |1981NVS...C......0K|
 

diameter (1)

 |diameterQ unit| error  | filter | method |     reference     |
 ---------------------------------------------------------------
 |2.24E+07  km  |7.51E+05|BV      |BrighCol|2013A&A...554A..84M|
 

distance (2)

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |   80.824   pc  |  -1.5136     +1.5136  |paral   |2020yCat.1350....0G|
 

rot (1)

 |  Vsini  [  err   ] (mes)|Q|     reference     |
 -------------------------------------------------
 |   3.9   [        ] (  6)| |2008AJ....135..209M|
 

fe_h (7)

 | Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 ------------------------------------------------------------
 |       2.8   |-0.19   |         |     |2008AJ....135..209M|
 

plx (4)

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
m|  13.15    :   0.85       |1997A&A...323L..49P|
 

pm (7)

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |   -8.311[    0.172]|   -2.580[    0.254]|ICRS|2020yCat.1350....0G|
 

mk (10)

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |A5                                  |1993yCat.3135....0C|
 

iue (36)

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 17879        :            |OD56K|39|L SWP 24540 L|  593 FU|841123 034700|000060| |500|G|C=203,B=19          |*|1996IUEML.C......0I|
 

External archives :

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

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

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