HD 303308

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Basic data :
HD 303308 -- Double or multiple 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: * (Ref,2011ApJS..194...12W,...), X (Ref,CXOCyg,...), ** (CCDM,**,...), *iC (Cl*,Cl), IR (2MASS,[S87b]) 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) : 10 45 05.9146041531 -59 40 05.922859453 (Optical) [ 0.0346 0.0322 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] : 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) : 10 43 09.1452868679 -59 24 17.953706171 [ 0.0346 0.0322 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) : 287.5936758974390 -00.6129259071515 [ 0.0346 0.0322 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 : -6.547 2.145 [0.066 0.063 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) -0 [9] / z(spectroscopic) 0.000000 [0.000030] / cz 0.00 [9.00]    (Opt) D 2018A&A...613A..65H 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): 0.4071 [0.0393] 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: O4.5V((fc)) C 2014ApJS..211...10S 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 (12) : U 7.45 [~] C 2002yCat.2237....0D B 8.30 [~] C 2002yCat.2237....0D V 8.17 [~] C 2002yCat.2237....0D R 7.92 [~] C 2002yCat.2237....0D G 8.0639 [0.0005] C 2018yCat.1345....0G I 7.75 [~] C 2002yCat.2237....0D J 7.707 [0.021] C 2003yCat.2246....0C H 7.714 [0.036] C 2003yCat.2246....0C K 7.625 [0.047] C 2003yCat.2246....0C g 8.97 [0.56] D 2012yCat.1322....0Z r 8.34 [0.28] D 2012yCat.1322....0Z i 8.15 [0.21] D 2012yCat.1322....0Z	SIMBAD with radius arcmin Interactive AladinLite view 2MASS DSS SDSSXMMIRACIRISGALEX VizieR photometry viewer    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!).

CCDM J10451-5941H	CXOCyg J104505.93-594006.0	LS 1869	WEB 9579
** DUN 98H	CXOGNC J104505.90-594006.0	2MASS J10450592-5940061	3XMM J104505.9-594004
** NEL 5	1E 104309-5924.2	PPM 339410	XMMU J104506.0-594007
ALS 1869	GC 14801	SAO 238431	XMMU J104504.8-594004
ASCC 2232708	GCRV 61600	SKY# 20588	[AMM2003] 51
CD-59 3307	GEN# +4.35160007	TYC 8626-2808-1	[ARV2008] 179
CGO 248	GOS G287.59-00.61 01	UBV M 40270	[ESK2003] 10
Cl* Trumpler 16 MJ 480	GSC 08626-02808	UCAC4 152-053237	[ESW2004] G
Cl Trumpler 16 7	HD 303308	uvby98 435160007	[S87b] IRS 26
CPC 20 3146	IDS 10412-5910 H	WDS J10451-5941H	Gaia DR2 5350358683250920704
CPD-59 2623	JP11 4513	WDS J10451-5941Ha,Hb	Gaia DR1 5350358683250920704

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References (279 between 1850 and 2020) (Total 279) 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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