RU CrA

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Basic data :
IC 1297 -- Planetary Nebula 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,CPD,...), PN (Ref,Hen,...), V* (AN,V*,...), IR (IRAS,PSCz,...), LP? (Ref), G (ESO) 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] : 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) : 19 17 23.459 -39 36 46.40 [ ] D 2003A&A...408.1029K 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] : 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) : 19 13 57.27 -39 42 11.4 [ ] 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] : 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) : 358.3461 -21.6052 [ ] 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) 19 [5] / z(~) 0.000063 [0.000017] / cz 19.00 [5.00]    E 1953GCRV..C......0W 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: [WC3/4] C 2004A&A...427..231G Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode" maj-axis : major axis size (arc minutes) min-axis : minor axis size (arc minutes) angle : orientation angle (in degrees) (incl) : inclination (in units of 15° from 0 to 7) (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam) quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the angular size reference Angular size (arcmin): 0.117 0.117 90 (Rad) D 2008ApJ...689..194S 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 (1) : B 9.8 [~] V4 E 2003AstL...29..468S	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!).

IC 1297	GSC 07922-00271	PN VV' 487	V* RU CrA
AN 18.1907	HD 180206	PN Sa 2-386	WEB 16544
CD-39 13207	Hen 2-431	PN VV 225	[DML87] 483
CPD-39 8386	IRAS 19139-3942	PN StWr 2-27	AAVSO 1910-39
ESO 337-20	IRAS F19139-3942	PSCz P19139-3942
GCRV 11718	PK 358-21 1	SCM 237
GSC2 S3323130157	PN G358.3-21.6	SV* HV 1318

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References (56 between 1998 and 2018) (Total 150) 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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