CDS

NGC 1218

Query : NGC 1218
C.D.S. - SIMBAD4 rel 1.7 - 2020.06.03CEST12:40:30

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations

Basic data :
NGC 1218 -- Seyfert 1 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: 		Sy1 (), Rad (BWE,3C,...), G (Ref,2016A&A...588A..14T,...), AGN ([HB91],[VV2000c],...), X (2E,RX,...), gam (1FGL,3FGL,...), * (Gaia), GiG ([CHM2007]), QSO (Ref)
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) : 		03 08 26.2238190 +04 06 39.300921 (Radio) [ 0.04 0.1 90 ] A 2017ApJS..233....3T
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) : 		03 05 49.0604364 +03 55 12.948323 [ 0.04 0.1 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) : 		174.8580894731 -44.5133816544 [ 0.04 0.1 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 : 		-0.670 0.346 [0.814 0.843 90] A 2018A&A...616A...1G
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) 8859 [~] / z(spectroscopic) 0.03 [~] / cz 8994 [~]
   (Opt) D 2017ApJS..233....3T
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): 		0.3472 [0.5377] A 2018A&A...616A...1G
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: 		E 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): 		1.147 0.917 155 (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 (5) :
B 12.84 [~] E ~
G 16.3054 [0.0126] C 2018A&A...616A...1G
J 10.154 [0.013] C 2006AJ....131.1163S
H 9.400 [0.015] C 2006AJ....131.1163S
K 9.066 [0.022] C 2006AJ....131.1163S
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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!).
Some important notes on this object about identifications and objects associations.
notes:

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2
The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 1 		: 6 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (61) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 1218 87GB 030549.1+035521 NVSS J030824+040639 Z 416-2
BWE 0305+0355 GRA B0305+03 PKS 0305+03 Z 0305.8+0355
3C 78.0 ICRF J030826.2+040639 PKS 0305+039 [CHM2007] LDC 223 J030826.24+0406388
3C 78 IERS B0305+039 PKS J0308+0406 [DC78] UGC 2555
4C 03.05 1Jy 0305+03 PMN J0308+0406 [HB91] 0305+039
3CR 78 1Jy 0305+039 RX J0308.4+0406 [VV2000c] J030826.2+040639
Cul 0305+039 LEDA 11749 1RXS J030825.9+040637 [VV2003c] J030826.2+040639
Cul 0305+03 2MASX J03082624+0406388 S2 0305+03 [VV2006c] J030826.2+040639
DA 91 MCG+01-09-001 UGC 2555 [VV2010c] J030826.2+040639
2E 727 MITG J030826+0406 UZC J030826.2+040639 [VV98c] J030826.2+040639
2E 0305.8+0354 MRC 0305+039 VLSS J0308.4+0406 [ZEH2003] RX J0308.4+0406 1
1FGL J0308.3+0403 MSH 03+0-03 WB 0305+0355 Gaia DR2 2673466818523904
3FGL J0308.6+0408 NAICGB 0305+039 WMAP J0308+0406 Gaia DR1 2673462523030912
3FHL J0308.4+0408 NPM1G +03.0124 WMAP 102
GB6 B0305+0355 NRAO 124 WMAP J0308+0404
GB6 J0308+0406 NVSS J030826+040642 WMAP J0308+0405

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References (341 between 1850 and 2020) (Total 341)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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                Reference summaries :

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Collections of Measurements


distance : 1    velocities : 7    PM : 2    PLX : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 1218

Link by name to the catalogue in VizieR :

NGC 1218 BWE 0305+0355 3C 78.0 3C 78 4C 03.05
3CR 78 2E 727 IERS B0305+039 2MASX J03082624+0406388 MITG J030826+0406
NPM1G +03.0124 NVSS J030826+040642 NVSS J030824+040639 PKS 0305+03 PKS 0305+039
PKS J0308+0406 PMN J0308+0406 1RXS J030825.9+040637 UGC 2555 Gaia DR2 2673466818523904
Gaia DR1 2673462523030912

Search by coordinates in Vizier (radius: 5 arcsec)

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 .

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2020.06.03-12:40:30

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