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NGC / IC / Messier Catalog

Information Table Analyze Images Messier Pics (Hubble) Export API

"OpenNGC is a database containing positions and main data of NGC (New General Catalogue) and IC (Index Catalogue) objects. Unlike other similar databases which are released with license limitations, OpenNGC is released under CC-BY-SA-4.0 license, which allows the use for a wider range of cases.

https://github.com/mattiaverga/OpenNGC

Data Sources

OpenNGC has been built by merging data from:

NASA/IPAC Extragalactic Database http://ned.ipac.caltech.edu/ This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
HyperLEDA database http://leda.univ-lyon1.fr We acknowledge the usage of the HyperLeda database (http://leda.univ-lyon1.fr)
SIMBAD Astronomical Database http://simbad.u-strasbg.fr/simbad/ This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France
HEASARC High Energy Astrophysics Science Archive Research Center http://heasarc.gsfc.nasa.gov/ We used several databases from HEASARC such as mwsc, lbn, plnebulae, lmcextobj and smcclustrs."

Attachments

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Dataset schema

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IC - NGC

No description available for this field.

Name (identifier)	catalog
Type	text
Sample

Name

"ICX" (Index Catalogue) or "NGCX" (New General Catalog) Reference

No description available for this field.

Name (identifier)	name
Type	text
Sample

Messier

("MX") cross reference Messier number

No description available for this field.

Name (identifier)	m
Type	text
Sample

NGC

("NGC X") Other NGC identification, if the object is listed twice in the catalog

No description available for this field.

Name (identifier)	ngc
Type	text
Sample

IC

cross reference IC number, if the object is also listed with that identification

No description available for this field.

Name (identifier)	ic
Type	text
Sample

Object Type abrev.

No description available for this field.

Name (identifier)	type
Type	text
Sample

Object type

No description available for this field.

Name (identifier)	object_definition
Type	text
Sample

ra

Right Ascension in J2000 Epoch (HH:MM:SS.SS)

No description available for this field.

Name (identifier)	ra
Type	text
Sample

dec

Dec: Declination in J2000 Epoch (+/-DD:MM:SS.SS)

No description available for this field.

Name (identifier)	dec
Type	text
Sample

Constellation

Constellation where the object is located

No description available for this field.

Name (identifier)	const
Type	text
Sample

Major axis

Major axis, expressed in arcmin

No description available for this field.

Name (identifier)	majax
Type	decimal
Sample

Minor axis

Minor axis, expressed in arcmin

No description available for this field.

Name (identifier)	minax
Type	decimal
Sample

Position angle

Major axis position angle (North Eastwards)

No description available for this field.

Name (identifier)	posang
Type	integer
Sample

b_mag

Apparent total magnitude in B filter

No description available for this field.

Name (identifier)	b_mag
Type	decimal
Sample

v_mag

Apparent total magnitude in V filter

No description available for this field.

Name (identifier)	v_mag
Type	decimal
Sample

j_mag

Apparent total magnitude in J filter

No description available for this field.

Name (identifier)	j_mag
Type	decimal
Sample

h_mag

Apparent total magnitude in H filter

No description available for this field.

Name (identifier)	h_mag
Type	decimal
Sample

k_mag

Apparent total magnitude in K filter

No description available for this field.

Name (identifier)	k_mag
Type	decimal
Sample

Surface Brigthness

Mean surface brigthness within 25 mag isophot (B-band), expressed in mag/arcsec2

No description available for this field.

Name (identifier)	surfbr
Type	decimal
Sample

Hubble (only Galaxies)

Morphological type (for galaxies)

No description available for this field.

Name (identifier)	hubble
Type	text
Sample

Cstar U-Mag (only Planetary Nebulae)

Apparent magnitude of central star in U filter

No description available for this field.

Name (identifier)	cstar_u_mag
Type	decimal
Sample

Cstar B-Mag (only Planetary Nebulae)

Apparent magnitude of central star in B filter

No description available for this field.

Name (identifier)	cstar_b_mag
Type	decimal
Sample

Cstar V-Mag (only Planetary Nebulae)

Apparent magnitude of central star in V filter

No description available for this field.

Name (identifier)	cstar_v_mag
Type	decimal
Sample

Cstar Names (only Planetary Nebulae)

Central star identifications

No description available for this field.

Name (identifier)	cstar_names
Type	decimal
Sample

identifiers

cross reference with other catalogs

No description available for this field.

Name (identifier)	identifiers
Type	text
Sample

common_names

Common names of the object if any

No description available for this field.

Name (identifier)	common_names
Type	text
Sample

ned_notes

notes about object exported from NED

No description available for this field.

Name (identifier)	ned_notes
Type	text
Sample

openngc_notes

notes about the object data from OpenNGC catalog

No description available for this field.

Name (identifier)	openngc_notes
Type	text
Sample

Image

No description available for this field.

Name (identifier)	image
Type	file
Sample

JSON Schema

The following JSON object is a standardized description of your dataset's schema. More about JSON schema.

{

"title":"ngc-ic-messier-catalog",
"type":"object",
"oneOf":
[
- {
  - "$ref":"#/definitions/ngc-ic-messier-catalog"
  }
]
,
"definitions":
{
- "ngc-ic-messier-catalog":
  {
  - "properties":
    {
    "records":
    {
    "type":"array",
    "items":
    {
    "$ref":"#/definitions/ngc-ic-messier-catalog_records"
    }
    }
    }
  }
  ,
- "ngc-ic-messier-catalog_records":
  {
  - "properties":
    {
    "fields":
    {
    "type":"object",
    "properties":
    {
    "catalog":
    {
    "type":"string",
    "title":"IC - NGC",
    "description":""
    }
    ,
    "name":
    {
    "type":"string",
    "title":"Name",
    "description":""ICX" (Index Catalogue) or "NGCX" (New General Catalog) Reference"
    }
    ,
    "m":
    {
    "type":"string",
    "title":"Messier",
    "description":"("MX") cross reference Messier number "
    }
    ,
    "ngc":
    {
    "type":"string",
    "title":"NGC",
    "description":"("NGC X") Other NGC identification, if the object is listed twice in the catalog "
    }
    ,
    "ic":
    {
    "type":"string",
    "title":"IC",
    "description":"cross reference IC number, if the object is also listed with that identification"
    }
    ,
    "type":
    {
    "type":"string",
    "title":"Object Type abrev.",
    "description":""
    }
    ,
    "object_definition":
    {
    "type":"string",
    "title":"Object type",
    "description":""
    }
    ,
    "ra":
    {
    "type":"string",
    "title":"ra",
    "description":"Right Ascension in J2000 Epoch (HH:MM:SS.SS)"
    }
    ,
    "dec":
    {
    "type":"string",
    "title":"dec",
    "description":"Dec: Declination in J2000 Epoch (+/-DD:MM:SS.SS)"
    }
    ,
    "const":
    {
    "type":"string",
    "title":"Constellation",
    "description":"Constellation where the object is located"
    }
    ,
    "majax":
    {
    "type":"number",
    "title":"Major axis",
    "description":"Major axis, expressed in arcmin"
    }
    ,
    "minax":
    {
    "type":"number",
    "title":"Minor axis",
    "description":"Minor axis, expressed in arcmin"
    }
    ,
    "posang":
    {
    "type":"integer",
    "title":"Position angle",
    "description":"Major axis position angle (North Eastwards)"
    }
    ,
    "b_mag":
    {
    "type":"number",
    "title":"b_mag",
    "description":"Apparent total magnitude in B filter"
    }
    ,
    "v_mag":
    {
    "type":"number",
    "title":"v_mag",
    "description":"Apparent total magnitude in V filter"
    }
    ,
    "j_mag":
    {
    "type":"number",
    "title":"j_mag",
    "description":"Apparent total magnitude in J filter"
    }
    ,
    "h_mag":
    {
    "type":"number",
    "title":"h_mag",
    "description":"Apparent total magnitude in H filter"
    }
    ,
    "k_mag":
    {
    "type":"number",
    "title":"k_mag",
    "description":"Apparent total magnitude in K filter"
    }
    ,
    "surfbr":
    {
    "type":"number",
    "title":"Surface Brigthness",
    "description":"Mean surface brigthness within 25 mag isophot (B-band), expressed in mag/arcsec2"
    }
    ,
    "hubble":
    {
    "type":"string",
    "title":"Hubble (only Galaxies)",
    "description":"Morphological type (for galaxies)"
    }
    ,
    "cstar_u_mag":
    {
    "type":"number",
    "title":"Cstar U-Mag (only Planetary Nebulae)",
    "description":"Apparent magnitude of central star in U filter"
    }
    ,
    "cstar_b_mag":
    {
    "type":"number",
    "title":"Cstar B-Mag (only Planetary Nebulae)",
    "description":"Apparent magnitude of central star in B filter"
    }
    ,
    "cstar_v_mag":
    {
    "type":"number",
    "title":"Cstar V-Mag (only Planetary Nebulae)",
    "description":"Apparent magnitude of central star in V filter"
    }
    ,
    "cstar_names":
    {
    "type":"number",
    "title":"Cstar Names (only Planetary Nebulae)",
    "description":"Central star identifications"
    }
    ,
    "identifiers":
    {
    "type":"string",
    "title":"identifiers",
    "description":"cross reference with other catalogs"
    }
    ,
    "common_names":
    {
    "type":"string",
    "title":"common_names",
    "description":"Common names of the object if any"
    }
    ,
    "ned_notes":
    {
    "type":"string",
    "title":"ned_notes",
    "description":"notes about object exported from NED"
    }
    ,
    "openngc_notes":
    {
    "type":"string",
    "title":"openngc_notes",
    "description":"notes about the object data from OpenNGC catalog"
    }
    ,
    "image":
    {
    "type":"string",
    "title":"Image",
    "description":""
    }
    }
    }
    }
  }
}

}

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