M 51

Basic data :
M 51 -- Galaxy in Pair of Galaxies 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 (), rG (), G (2014AJ,APG,...), Rad (B3,BWE,...), AGN ([VV2000c],[VV2003c],...), X (RX,1RXS,...), IR (IRAS,ISOSS,...), GiP (KPG,[T76]), * (BD,PLX), GiG ([CHM2007]), IG (VV) 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) : 13 29 52.698 +47 11 42.93 (Infrared) [ ] C 2006AJ....131.1163S 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) : 13 27 46.321 +47 27 10.59 [ ] 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) : 104.851585 +68.560702 [ ] 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) 465 [61] / z(~) 0.00155 [0.00020] / cz 465.0 [61.0]    D 1999PASP..111..438F 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): 7.8 [16.9] E 1995GCTP..C......0V 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: SA C 2019MNRAS.488..590B 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): 10.00 7.59 163 (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 (6) : B (AB) 9.26 [0.03] C 2014MNRAS.445..881C V 8.36 [0.06] D 2007ApJS..173..185G R (AB) 8.40 [0.03] C 2014MNRAS.445..881C J 6.401 [0.019] C 2006AJ....131.1163S H 5.653 [0.020] C 2006AJ....131.1163S K 5.496 [0.025] C 2006AJ....131.1163S	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: NGC 5195 is a possible companion = M 51a in 2004ApJ...602..231C See GALEX UV data in GALEX data See also Specfind radio flux densities.

M 51	IRAS 13277+4727	RX J1329.8+4711	[CHM2007] LDC 867 J132952.69+4711429
APG 85A	ISOSS J13299+4714	1RXS J132953.8+471143	[DML87] 671
APG 85	KHG 1-C 5	TC 827	[H92] 27
B3 1327+474C	KPG 379a	UGC 8493	[LPS2002] 16
BD+47 2063	LEDA 47404	UZC J132952.1+471144	[M98c] 132746.9+472716
BWE 1327+4727	2MASX J13295269+4711429	VV 403	[SLK2004] 853
4C 47.36A	MCG+08-25-012	VV 1a	[T76] 85A
6C 132748+472801	NAME OKM2018 SWIFT J1329.9+4719	VV 1	[VDD93] 187A
7C 132735.60+472604.00	NAME Whirlpool	WB 1327+4727	[VV2000c] J132952.4+471141
7C 132746.79+472722.00	NAME Question Mark Galaxy	WN B1327.8+4727	[VV2003c] J132952.4+471141
7C 132753.10+473032.00	NAME Whirlpool Galaxy	2XMM J132952.5+471144	[VV2006c] J132952.4+471141
GB1 1327+475	NGC 5194	XMMU J132952.9+471140	[VV2010c] J132952.4+471141
GB6 B1327+4727	PLX 3084	Z 246-8	[VV98c] J132952.7+471143
87GB 132747.8+472723	PLX 3084.00	Z 1327.8+4727	[ZEH2003] RX J1329.8+4711 1
IRAS F13277+4727	PSCz Q13277+4727	[CAB95] IRAS F13277+4727

References (4192 between 1850 and 2023) (Total 4192) 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 : M 51

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