NGC 6888

C.D.S. - SIMBAD4 rel 1.5.12 - 2017.11.18CET03:29:00

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


Basic data :
NGC 6888 -- Interstellar matter
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:
HII (LBN), ISM ([T70])
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
20 12 07.0 +38 21 18 [ ] E ~
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
20 12 07.0 +38 21 18 [ ]
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
20 10 17.5 +38 12 15 [ ]
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
075.4765 +02.4250 [ ]
Spectral type is made of 3 parts:
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality->E=worst quality, ~ =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
WN6b(h) C 2014MNRAS.440.1345F
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) :
B 7.44 [~] D ~
SIMBAD with radius arcmin
Interactive AladinLite view
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VizieR photometry viewer    sed-help-icon
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:

  • : WR + Ring neb


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (5) :

NGC 6888 LBN 075.51+02.29 [T70] 32
LBN 203 NAME Crescent Nebula

Plots and Images

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References (22 between 2013 and 2018)
Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Measurements (2 types) :


herschel : 10    IUE : 6   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed

herschel (10)

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 1.6330 582 NGC6888_alt-1 20 12 12.00 +38 20 00.0 KPGT_mgroen01_1 PacsPhoto 3074 2010-12-16T15:29:29 1342212043 get Herschel/PACS observation #1342212043 PPhot_NGC 6888_B_Scan-135_M_alt 2 1.6330 582 NGC6888_alt-1 20 12 12.00 +38 20 00.0 KPGT_mgroen01_1 PacsPhoto 3074 2010-12-16T14:37:12 1342212042 get Herschel/PACS observation #1342212042 PPhot_NGC 6888_B_Scan-45_M_alt 3 1.6330 582 NGC6888_alt-1 20 12 12.00 +38 20 00.0 KPGT_mgroen01_1 PacsPhoto 3074 2010-12-16T13:44:55 1342212041 get Herschel/PACS observation #1342212041 PPhot_NGC 6888_G_Scan-135_M_alt 4 1.6330 582 NGC6888_alt-1 20 12 12.00 +38 20 00.0 KPGT_mgroen01_1 PacsPhoto 3074 2010-12-16T12:52:38 1342212040 get Herschel/PACS observation #1342212040 PPhot_NGC 6888_G_Scan-45_M_alt 5 2.1760 1306 NGC 6888 -inner-1 20 11 56.02 +38 21 40.1 OT2_dstock_3 PacsLineSpec 2323 2012-12-09T16:19:47 1342256928 get Herschel/PACS observation #1342256928 NGC 6888 (P2) inner 6 2.1760 1306 NGC 6888 -inner-1 20 11 56.02 +38 21 40.1 OT2_dstock_3 PacsLineSpec 1574 2012-12-09T15:51:17 1342256927 get Herschel/PACS observation #1342256927 NGC 6888 P(1+3) inner 7 8.4272 1303 NGC 6888 -outer-1 20 12 39.02 +38 26 55.1 OT2_dstock_3 PacsLineSpec 1570 2012-12-06T14:17:46 1342256478 get Herschel/PACS observation #1342256478 NGC 6888 (1+3) outer 8 8.4272 1303 NGC 6888 -outer-1 20 12 39.02 +38 26 55.1 OT2_dstock_3 PacsLineSpec 2319 2012-12-06T13:36:57 1342256477 get Herschel/PACS observation #1342256477 NGC 6888 (P2) outer 9 35.7256 328 NGC6888-StripExt 20 10 00.00 +38 47 00.0 KPGT_mgroen01_1 PacsPhoto 12791 2010-04-07T04:12:26 1342194050 get Herschel/PACS observation #1342194050 PPhot_NGC 6888_B_Scan-135_M_Strip 10 35.7256 328 NGC6888-StripExt 20 10 00.00 +38 47 00.0 KPGT_mgroen01_1 PacsPhoto 10717 2010-04-07T01:12:08 1342194049 get Herschel/PACS observation #1342194049 PPhot_NGC 6888_B_Scan-45_M_Strip

iue (6)

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |NGC 6888        :2           |NEJRD|76|L SWP 32347 L|      BO|871117 043300|002400| |03 |G|B=43                |*|1996IUEML.C......0I|
 

External archives :

Data at NED - NASA/IPAC Extragalactic Database : NGC 6888

Link by name to the catalogue in VizieR :

NGC 6888

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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2017.11.18-03:29:04

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