NGC 4450

Basic data :
NGC 4450 -- LINER-type Active Galaxy Nucleus 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: LIN (), G (2014ApJS,EVCC,...), AGN ([VV2000c],[VV2003c],...), Rad (FIRST,NVSS,...), IR (IRAS,PSCz), GiG ([CHM2007]), * (Gaia), X (2E) 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) : 12 28 29.5910654016 +17 05 05.976112020 (Optical) [ 0.2584 0.2215 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) : 12 25 58.2896880747 +17 21 41.044883234 [ 0.2584 0.2215 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) : 273.9114942332749 +78.6422177921835 [ 0.2584 0.2215 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 : -0.203 -0.207 [0.339 0.272 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) 1955 [~] / z(emission) 0.006543 [~] / cz 1961.42 [~]    (Rad) D 2018ApJ...861...49H 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): 0.1309 [0.31] A 2020yCat.1350....0G 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: Sab C 2014A&A...569A.124V 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): 5.62 4.27 173 (Opt) D 2003A&A...412...45P 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 10.90 [0.08] D 2007ApJS..173..185G V 10.08 [0.08] D 2007ApJS..173..185G G 17.234200 [0.007385] C 2020yCat.1350....0G J 7.938 [0.020] C 2006AJ....131.1163S H 7.217 [0.024] C 2006AJ....131.1163S K 7.048 [0.028] C 2006AJ....131.1163S u (AB) 13.643 [0.003] C 2009ApJS..182..543A g (AB) 11.774 [0.002] C 2009ApJS..182..543A r (AB) 10.925 [0.002] C 2009ApJS..182..543A i (AB) 10.506 [0.002] C 2009ApJS..182..543A z (AB) 10.175 [0.002] 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: See GALEX UV data in GALEX data See also Specfind radio flux densities.

NGC 4450	MCG+03-32-048	Z 1225.9+1721	[VV2003c] J122829.6+170505
2E 2727	NVSS J122829+170502	[BEC2010] HRS 170	[VV2006c] J122829.6+170505
2E 1225.9+1722	NVSS B122558+172138	[CHM2007] HDC 720 J122829.63+1705058	[VV2010c] J122829.6+170505
EVCC 2124	PSCz Q12259+1721	[CHM2007] LDC 904 J122829.63+1705058	[VV98c] J122829.5+170507
FIRST J122829.5+170506	SDSS J122829.58+170506.0	[DC78] UGC 7594	[YOF95] 161
IRAS F12259+1721	UGC 7594	[M98c] 122558.0+172140	EQ 1225+173
IRAS 12259+1721	UZC J122829.6+170506	[NKB95] N4450	Gaia DR3 3946141047337319552
LEDA 41024	VCC 1110	[VDD93] 161
2MASX J12282963+1705058	Z 99-62	[VV2000c] J122829.6+170505

References (537 between 1850 and 2023) (Total 537) 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 : NGC 4450

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