NGC 6781

C.D.S. - SIMBAD4 rel 1.7 - 2018.10.19CEST23:18:47

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


Basic data :
NGC 6781 -- Planetary Nebula
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:
PN (Ref,PK,...), * (GSC2), IR (IRAS)
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
19 18 28.085 +06 32 19.29 [ ] D 2003A&A...408.1029K
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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
FK5 coord. (ep=J2000 eq=2000) :
19 18 28.085 +06 32 19.29 [ ]
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
19 16 01.478 +06 26 47.81 [ ]
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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
041.840761 -02.987451 [ ]
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) 4.3 [~] / z(~) 0.000014 [~] / cz 4.30 [~]
   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)
  • (incl) : inclination (in units of 15° from 0 to 7)
  • (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):
1.767 1.767 90 (Rad) D 2008ApJ...689..194S
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 (1) :
V 11.8 [~] D 2007MNSSA..66..172S
SIMBAD with radius arcmin
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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!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (8) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NGC 6781 IRAS 19160+0626 PN G041.8-02.9 PN ARO 32
GSC2 N023231154981 PK 041-02 1 PN VV 228 PN VV' 492

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References (21 between 2013 and 2018) (Total 238)
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   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

distance (1)

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |  706       pc  |                       |        |2008ApJ...689..194S|
 
Observing logs


ISO : 7    herschel : 12   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

iso (7)

The 2 columns in color are computed by VizieR, and are not part of the original data.
Note: Quick-look images of the data, and specific documentation, are accessible by clicking on the TDT observation identifier
VI/111/isolog
Post annotation
ISO Observation Log (ISO Data Centre, 2004) [ReadMe+ftp]

*The ISO Observation Log (36737 rows) (Note)
img(gal)
start AladinLite

Full _r TDT AOT minLam maxLam Target oStart oLen recno FOV RAJ2000 DEJ2000 cal ObsID abs PropID arcmin um um s s deg deg
1 0.027 47901509 SWS01 2.38 45.22 NGC 6781 1997-03-09T21:55:31 1912 20691 33"x20" 289.6168 +06.5383 MBARLOW + DUST4_A 2 0.027 49901108 LWS01 43.05 195.92 NGC 6781 1997-03-29T17:34:32 1318 21474 84" D 289.6168 +06.5383 MBARLOW + DUST4_A 3 0.091 31600254 CAM01 5.41 6.59 N6781 1996-09-27T15:00:57 855 13438 492"x480" 289.6185 +06.5383 PCOX + COX_1 4 0.093 16301251 CAM01 6.94 8.46 N6781 1996-04-28T12:11:27 856 6438 492"x480" 289.6185 +06.5382 PCOX + COX_1 5 0.095 16301153 CAM01 11.55 17.05 N6781 1996-04-28T11:55:15 918 6437 492"x480" 289.6185 +06.5381 PCOX + COX_1 6 0.095 16301352 CAM01 5.05 8.35 N6781 1996-04-28T12:26:37 580 6439 492"x480" 289.6185 +06.5381 PCOX + COX_1 7 5.607 49901136 LWS01 43.05 195.92 NGC6781 off 1997-03-29T17:11:40 1318 21475 84" D 289.6068 +06.4458 MBARLOW + DUST4_A

herschel (12)

The 1 column in color are computed by VizieR, and are not part of the original data.

Note: (see also the postcard server)

VI/139/herschel
Post annotation
Herschel Observation Log (Herschel Science Centre, 2013) [ReadMe+ftp]
The Herschel Observation Log (37093 rows)
img(gal)
start AladinLite

Full _r OD Target RAJ2000 DEJ2000 Proposal AOT Dur Start ObsId PACS HIFI SPIRE Label arcmin "h:m:s" "d:m:s" s s
1 0.0012 1053 NGC 6781 19 18 28.09 +06 32 19.3 OT1_tueta_2 SpireSpectrometer 2800 2012-04-01T12:21:55 1342243612 get Herschel/SPIRE observation #1342243612 NGC6781_SSpec_Center 2 0.0012 887 NGC 6781 19 18 28.09 +06 32 19.3 OT1_tueta_2 PacsPhoto 12681 2011-10-18T01:25:12 1342231100 get Herschel/PACS observation #1342231100 NGC6781_PPhoto_Scan045 3 0.0012 887 NGC 6781 19 18 28.09 +06 32 19.3 OT1_tueta_2 PacsPhoto 12681 2011-10-17T21:52:48 1342231099 get Herschel/PACS observation #1342231099 NGC6781_PPhoto_Scan135 4 0.0012 884 NGC 6781 19 18 28.09 +06 32 19.3 OT1_tueta_2 PacsRangeSpec 9995 2011-10-14T23:47:25 1342231000 get Herschel/PACS observation #1342231000 NGC6781_PSpecR_B2A_Center 5 0.0012 884 NGC 6781 19 18 28.09 +06 32 19.3 OT1_tueta_2 PacsRangeSpec 13435 2011-10-14T20:01:18 1342230999 get Herschel/PACS observation #1342230999 NGC6781_PSpecR_B2B_Center 6 0.0012 880 NGC 6781 19 18 28.09 +06 32 19.3 OT1_tueta_2 SpirePhoto 583 2011-10-11T06:57:06 1342230841 get Herschel/SPIRE observation #1342230841 NGC6781_SPhoto 7 0.8509 878 NGC6781_off 19 18 27.39 +06 31 29.3 GT1_dteyssie_1 HifiPoint 118 2011-10-08T22:25:49 1342230381 get Herschel/HIFI observation #1342230381 SUCCESS -Setting-1 - NGC6781 8 0.8509 869 NGC6781_off 19 18 27.39 +06 31 29.3 GT1_dteyssie_1 HifiPoint 921 2011-09-30T10:11:18 1342229920 get Herschel/HIFI observation #1342229920 SUCCESS -Setting-2 - NGC6781 9 0.8532 1053 NGC 6781 Rim 19 18 31.52 +06 32 19.8 OT1_tueta_2 SpireSpectrometer 2800 2012-04-01T11:34:58 1342243611 get Herschel/SPIRE observation #1342243611 NGC6781_SSpec_Rim 10 0.8532 884 NGC 6781 Rim 19 18 31.52 +06 32 19.8 OT1_tueta_2 PacsRangeSpec 9995 2011-10-15T07:36:40 1342231002 get Herschel/PACS observation #1342231002 NGC6781_PSpecR_B2A_Rim 11 0.8532 884 NGC 6781 Rim 19 18 31.52 +06 32 19.8 OT1_tueta_2 PacsRangeSpec 17899 2011-10-15T02:36:09 1342231001 get Herschel/PACS observation #1342231001 NGC6781_PSpecR_B2B_Rim 12 5.8845 1053 NGC 6781 OFF 19 18 32.39 +06 26 32.1 OT1_tueta_2 SpireSpectrometer 502 2012-04-01T11:26:11 1342243610 get Herschel/SPIRE observation #1342243610 NGC6781_SSpec_OFF


External archives :

Data at NED - NASA/IPAC Extragalactic Database : NGC 6781

Link by name to the catalogue in VizieR :

NGC 6781 IRAS 19160+0626 PN G041.8-02.9

Search by coordinates in Vizier (radius: 30 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 .
The list of all annotations to SIMBAD objects can be found here .

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2018.10.19-23:18:49

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