X Per

Basic data :
V* X Per -- High Mass X-ray 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: * (HD,AG,...), X (2A,3A,...), ** (**,ADS,...), HXB (1996PASP), SB* (SBC7,SBC9), V* (V*,AAVSO), gam (INTEGRAL1,INTREF), Psr (2007ApJS), Be* (2007ApJS), N* (2014MNRAS), Ae* (1999AJ), Em* (EM*), UV (TD1), NIR (2MASS), 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) : 03 55 23.0777456088 +31 02 45.039836148 (Optical) [ 0.0296 0.0208 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 FK4 coord. (ep=B1950 eq=1950) : 03 52 15.1650726633 +30 54 00.859514917 [ 0.0296 0.0208 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) : 163.0813581287063 -17.1361900863666 [ 0.0296 0.0208 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 : -1.282 -1.869 [0.053 0.030 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) -50.00 [10] / z(~) -0.000167 [0.000033] / cz -50.00 [10.00]    D 2007AN....328..889K 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): 1.6274 [0.0375] 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: O9.5III C 1982ApJS...50...55S 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 (7) : U 6.090 [0.010] C 1991A&AS...89..415O B 6.840 [0.007] C 1991A&AS...89..415O V 6.720 [0.009] C 1991A&AS...89..415O G 6.261697 [0.005634] C 2020yCat.1350....0G J 6.149 [0.018] C 2003yCat.2246....0C H 6.073 [0.024] C 2003yCat.2246....0C K 5.920 [0.016] C 2003yCat.2246....0C	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!).

HD 24534	GEN# +1.00024534	MCW 255	3U 0352+30
** HO 325A	GOS G163.08-17.14 01	N30 809	4U 0352+30
2A 0352+309	GSC 02357-02042	PBC J0355.3+3102	4U 0352+309
3A 0352+309	1H 0352+308	PLX 862	UBV 21429
ADS 2859 A	H 0353+30	PMC 90-93 2072	V* X Per
AG+30 385	H 0352+309	PPM 68909	WDS J03554+3103A
AGKR 3455	HIC 18350	ROT 578	WEB 3545
ALS 14592	Hilt 408	1RXS J035522.4+310257	1XRS 03522+308
BD+30 591	HIP 18350	SAO 56815	XSS J03558+3059
CCDM J03554+3103A	HR 1209	SBC7 149	[BM83] X0352+309
CSI+30 591 1	IDS 03491+3045 A	SBC9 203	[C93] 153
2E 906	INTEGRAL1 2	SKY# 5994	[HJ56] 51
2E 0352.2+3054	INTREF 162	SWIFT J0355.5+3101	[KRL2007b] 36
EM* MWC 78	IRAS 03522+3053	SWIFT J0355.3+3102	AAVSO 0349+30
1ES 0352+30.8	JP11 833	TD1 2642	Gaia DR3 168450545792009600
FK5 4355	1M 0352+309	TIC 94471007	Gaia DR1 168450541495088512
GC 4720	2MASS J03552309+3102449	TYC 2357-2042-1	Gaia DR2 168450545792009600
GCRV 2244	2MAXI J0355+311	2U 0352+30

References (958 between 1850 and 2023) (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

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External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : X Per

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