M 81

Basic data :
M 81 -- 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: X (2012ApJS,2E,...), Rad (2020A&A,BWE,...), G (2014AJ,HIJASS,...), AGN (2011A&A,[VV2000c],...), QSO (2010A&A,[VV2006],...), * (BD,HD,...), IR (IRAS,PSCz,...), GiG (K79,[CHM2007]), Sy2 (2013ApJS), LIN (2012ApJ), GiP (KPG), 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) : 09 55 33.1726556496 +69 03 55.062505368 (Optical) [ 0.0459 0.0494 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) : 09 51 27.3000507856 +69 18 08.242423607 [ 0.0459 0.0494 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) : 142.0918223605216 +40.9000561069047 [ 0.0459 0.0494 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 : 0.278 -0.072 [0.059 0.063 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) -36 [~] / z(spectroscopic) -0.000120 [~] / cz -36.00 [~]    (Rad) D 2020ApJ...902..145K 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): 0.1495 [0.06] 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: 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): 21.38 10.23 157 (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 7.89 [0.03] D 2007ApJS..173..185G V 6.94 [0.03] D 2007ApJS..173..185G G 15.130657 [0.009088] C 2020yCat.1350....0G J 4.760 [0.016] C 2006AJ....131.1163S H 4.090 [0.018] C 2006AJ....131.1163S K 3.831 [0.018] C 2006AJ....131.1163S u (AB) 11.673 [0.002] C 2009ApJS..182..543A g (AB) 9.635 [0.002] C 2009ApJS..182..543A r (AB) 8.708 [0.004] C 2009ApJS..182..543A i (AB) 8.373 [0.005] C 2009ApJS..182..543A z (AB) 7.921 [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.

M 81	LEDA 28630	SDSS J095533.16+690355.1	[CAB95] IRAS F09514+6918
BD+69 543	2MASX J09553318+6903549	SDSS J095533.14+690355.2	[CHM2007] HDC 552 J095533.18+6903549
BWE 0951+6918	MCG+12-10-010	SPB 115	[CHM2007] LDC 842 J095533.18+6903549
2E 2195	NAME M 81*	SWIFT J0955.5+6907	[DML87] 630
2E 0951.4+6918	NAME Bode's Galaxy	SWIFT J0955.9+6905	[LB2005] NGC 3031 X1
1ES 0951+69.3	NGC 3031	TC 714	[M98c] 095127.6+691813
EXO 0951.3+6917	NVSS J095533+690355	TGSSADR J095533.1+690354	[NKB95] N3031
GB6 B0951+6918	PSCz Q09514+6918	UGC 5318	[VDD93] 99
87GB 095125.0+691806	RBS 808	UZC J095535.5+690352	[VV2000c] J095533.2+690355
HD 85534	RFC J0955+6903	WN B0951.4+6918	[VV2003c] J095533.2+690355
HIJASS J0955+69A	RGB J0955+690	2XMM J095533.1+690355	[VV2006] J095533.2+690355
ICRF J095533.1+690355	RORF 0951+693	XMMSL1 J095534.3+690350	[VV2010] J095533.2+690355
IERS B0951+693	1RXP J095532.8+690354	Z 333-7	[VV98c] J095533.2+690355
IRAS F09514+6918	RX J095532+69038	Z 0951.4+6918	[ZEH2003] RX J0955.5+6903 1
IRAS 09514+6918	RX J0955.5+6903	[B93] 13	Gaia DR2 1070470609404512512
K79 28A	RX J095533.4+690353	[BAG2012] 149.0083+69.0811	Gaia DR3 1070470609404512512
KPG 218a	1RXS J095534.7+690338	[BAZ94] 3	Gaia DR1 1070470605109644672

References (4359 between 1850 and 2023) (Total 4359) 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 : M 81

Link by name to the catalogue in VizieR :

Search by coordinates in Vizier (radius: 5 arcsec)

• HIJASS J0955+69A is HIJASS J0955+69 in the original paper 2003MNRAS.342..738L

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

Currently no annotations available

add an annotation to this object

report an error concerning the data of this object

Store this result in Votable, in Ascii, or in the CDS portal

To bookmark this query, right click on this link: simbad:M 81 and select 'bookmark this link' or equivalent in the popup menu