IC 1661

Basic data :
NGC 449 -- Seyfert 2 Galaxy 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: Sy2 (), Rad (BWE,CLASS,...), G (2015ApJS,KUG,...), AGN ([HB91],[VV2000c],...), IR (IRAS,PSCz,...), * (IC,Gaia), X (1RXS,2XMM), QSO ([BDW2002]), AG? (2020MNRAS), gam (INTREF), Opt (SDSS) 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) : 01 16 07.2128 +33 05 21.652 (Radio) [ 55 55 0 ] B 2003MNRAS.341....1M 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) : 01 13 19.5825 +32 49 32.354 [ 55 55 0 ] 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) : 128.8708470 -29.4976131 [ 55 55 0 ] 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) 4771 [21] / z(~) 0.016044 [0.000070] / cz 4809.87 [20.99]    D 2002LEDA.........0P Syntax of morphological type is : mtype quality bibcode mtype : Hubble morphological class (spirals, ellipticals, etc) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the morphological type reference Morphological type: SB0 D ~ 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) (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): 0.453 0.281 75 (NIR) C 2006AJ....131.1163S 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) : B 15.90 [~] D 2010A&A...518A..10V V 14.96 [~] D 2010A&A...518A..10V G 17.304897 [0.022106] C 2020yCat.1350....0G J 12.265 [0.038] C 2006AJ....131.1163S H 11.605 [0.049] C 2006AJ....131.1163S K 11.173 [0.052] C 2006AJ....131.1163S u (AB) 16.263 [0.008] C 2009ApJS..182..543A g (AB) 14.838 [0.002] C 2009ApJS..182..543A r (AB) 14.207 [0.002] C 2009ApJS..182..543A i (AB) 13.996 [0.002] C 2009ApJS..182..543A z (AB) 13.696 [0.003] C 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: pos.RNGC449=NGC447 not UGC 804 Contains H2O megamaser (2006A&A...450..933Z) See also Specfind radio flux densities.

NGC 449	LEDA 4587	WN B0113.3+3249	[VV2000c] J011607.2+330522
BWE 0113+3249	2MASX J01160722+3305218	2XMM J011607.1+330522	[VV2003c] J011607.2+330522
CLASS J011607.2127+330521.652	MCG+05-04-009	Z 502-18	[VV2006c] J011607.2+330522
GB6 B0113+3249	Mrk 1	Z 0113.3+3250	[VV2010c] J011607.2+330522
87GB 011319.9+324927	NVSS J011607+330521	[BDW2002] q0113+3249	[VV98c] J011607.2+330522
IC 1661	PSCz Q01133+3249	[CAB95] IRAS F01133+3249	Gaia DR2 313817081177711872
INTREF 75	1RXS J011607.8+330524	[DML87] 26	Gaia DR3 313817081177711872
IRAS F01133+3249	SDSS J011607.20+330521.7	[HB91] 0113+328
IRAS 01133+3249	TGSSADR J011607.1+330520	[KGP99] 011319.5800+324932.500
KUG 0113+328A	UZC J011607.3+330518	[SUA2001] J011607.215+330521.60

References (286 between 1850 and 2024) (Total 286) 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 : IC 1661

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