Information on Service 'OpenNGC'

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Further access options are discussed below

OpenNGC is a database containing positions and main data of NGC (New General Catalogue) and IC (Index Catalogue) objects. It has been built by merging data from NED, HyperLEDA, SIMBAD, and several databases available at HEASARC. In this VO publication, we have changed most of the column names, mostly to make them work as ADQL column names without resorting to delimited identifiers. The mapping should be obvious.

For a list of all services and tables belonging to this service's resource, see Information on resource 'OpenNGC'

Overview

You can access this service using:

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
comname Common Common name(s) of the object. N/A N/A
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
hubble_type Hubble Morphological Hubble type for galaxies. N/A N/A
mag_b m_B Apparent total magnitude in the B Band. mag N/A
mag_k m_K Apparent total magnitude in the K Band. mag N/A
mag_v m_V Apparent total magnitude in the V Band. mag N/A
MAXREC Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
name Name Object identifier, either from NGC or from IC. N/A N/A
obj_type Type Object Type. See note for terms and symbols used. N/A N/A
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
RESPONSEFORMAT Output Format File format requested for output. N/A meta.code.mime
SR Search Radius Search radius deg N/A
VERB Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
comname Common Common name(s) of the object. N/A N/A
constellation Const. Constellation the object is located in. N/A N/A
cstar_id C* name Identifier of the central star for planetary nebulae. N/A N/A
cstar_mag_b * m_B For planetary nebulae: Apparent magnitude of the central star in the B Band. mag N/A
cstar_mag_u * m_U For planetary nebulae: Apparent magnitude of the central star in the U Band. mag N/A
cstar_mag_v * m_V For planetary nebulae: Apparent magnitude of the central star in the V Band. mag N/A
dej2000 Dec J2000 Declination in ICRS for Epoch J2000.0. deg N/A
hubble_type Hubble Morphological Hubble type for galaxies. N/A N/A
ic_cross IC Other IC number for this object in case it was duplicated in IC or NCG. N/A N/A
mag_b m_B Apparent total magnitude in the B Band. mag N/A
mag_h m_H Apparent total magnitude in the H Band. mag N/A
mag_j m_J Apparent total magnitude in the J Band. mag N/A
mag_k m_K Apparent total magnitude in the K Band. mag N/A
mag_v m_V Apparent total magnitude in the V Band. mag N/A
maj_ax_deg Maj. Ax. Major axis of covering ellipsoid. deg N/A
messier_nr Messier Messier number for this object N/A N/A
min_ax_deg Min. Ax. Minor axis of covering ellipsoid. deg N/A
name Name Object identifier, either from NGC or from IC. N/A N/A
ned_notes NED note Notes about the object exported from NED N/A N/A
notes Notes Notes about the object from OpenNGC N/A N/A
obj_type Type Object Type. See note for terms and symbols used. Note t N/A N/A
other_id ID Cross reference to other catalogs. N/A N/A
other_ngc Alt. NGC Other NGC number for this object in case it was duplicated in IC or NCG. N/A N/A
pos_ang Pos. Ang. Position angle of covering ellipsoid, north over east. deg N/A
raj2000 RA J2000 Right Ascension in ICRS for Epoch J2000.0. deg N/A
surf_br_B Surf. Br. Mean surface brigthness within the 25 mag isophote (B-band); only given for galaxies mag/arcsec**2 N/A

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
name Name Object identifier, either from NGC or from IC. N/A N/A 1
obj_type Type Object Type. See note for terms and symbols used. Note t N/A N/A 1
raj2000 RA J2000 Right Ascension in ICRS for Epoch J2000.0. deg N/A 1
dej2000 Dec J2000 Declination in ICRS for Epoch J2000.0. deg N/A 1
constellation Const. Constellation the object is located in. N/A N/A 15
maj_ax_deg Maj. Ax. Major axis of covering ellipsoid. deg N/A 15
min_ax_deg Min. Ax. Minor axis of covering ellipsoid. deg N/A 15
pos_ang Pos. Ang. Position angle of covering ellipsoid, north over east. deg N/A 15
mag_b m_B Apparent total magnitude in the B Band. mag N/A 15
mag_v m_V Apparent total magnitude in the V Band. mag N/A 15
mag_j m_J Apparent total magnitude in the J Band. mag N/A 15
mag_h m_H Apparent total magnitude in the H Band. mag N/A 15
mag_k m_K Apparent total magnitude in the K Band. mag N/A 15
surf_br_B Surf. Br. Mean surface brigthness within the 25 mag isophote (B-band); only given for galaxies mag/arcsec**2 N/A 15
hubble_type Hubble Morphological Hubble type for galaxies. N/A N/A 15
cstar_mag_u * m_U For planetary nebulae: Apparent magnitude of the central star in the U Band. mag N/A 15
cstar_mag_b * m_B For planetary nebulae: Apparent magnitude of the central star in the B Band. mag N/A 15
cstar_mag_v * m_V For planetary nebulae: Apparent magnitude of the central star in the V Band. mag N/A 15
messier_nr Messier Messier number for this object N/A N/A 15
other_ngc Alt. NGC Other NGC number for this object in case it was duplicated in IC or NCG. N/A N/A 15
ic_cross IC Other IC number for this object in case it was duplicated in IC or NCG. N/A N/A 15
cstar_id C* name Identifier of the central star for planetary nebulae. N/A N/A 15
other_id ID Cross reference to other catalogs. N/A N/A 15
comname Common Common name(s) of the object. N/A N/A 15
ned_notes NED note Notes about the object exported from NED N/A N/A 15
notes Notes Notes about the object from OpenNGC N/A N/A 15

Copyright, License, Acknowledgements

OpenNGC is licensed under the Creative Commons Attribution Share-Alike 3.0 License

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VOResource XML (that's something exclusively for VO nerds)

Note t

The object type is encoded as follows:

* Star
** Double star
*Ass Association of stars
OCl Open Cluster
GCl Globular Cluster
Cl+N Star cluster + Nebula
G Galaxy
GPair Galaxy Pair
GTrpl Galaxy Triplet
GGroup Group of galaxies
PN Planetary Nebula
HII HII Ionized region
EmN Emission Nebula
Neb Nebula
RfN Reflection Nebula
SNR Supernova remnant
Nova Nova star
NonEx Nonexistent object