Information on Service 'OpenNGC'

[Use this service from your browser]

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.

Spatial Coverage

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 src.morph.type
mag_b m_B Apparent total magnitude in the B Band. mag phot.mag;em.opt.B
mag_k m_K Apparent total magnitude in the K Band. mag phot.mag;em.ir.K
mag_v m_V Apparent total magnitude in the V Band. mag phot.mag;em.opt.V
name Name Object identifier, either from NGC or from IC. N/A meta.id;meta.main
obj_type Type Object Type. See note for terms and symbols used. N/A src.class
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
SR Search Radius Search radius deg 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 meta.id.parent
cstar_id C* name Identifier of the central star for planetary nebulae. N/A meta.id.cross
cstar_mag_b * m_B For planetary nebulae: Apparent magnitude of the central star in the B Band. mag phot.mag;em.opt.B
cstar_mag_u * m_U For planetary nebulae: Apparent magnitude of the central star in the U Band. mag phot.mag;em.opt.U
cstar_mag_v * m_V For planetary nebulae: Apparent magnitude of the central star in the V Band. mag phot.mag;em.opt.V
dej2000 Dec J2000 Declination in ICRS for Epoch J2000.0. deg pos.eq.dec;meta.main
hubble_type Hubble Morphological Hubble type for galaxies. N/A src.morph.type
ic_cross IC Other IC number for this object in case it was duplicated in IC or NCG. N/A meta.id.cross
mag_b m_B Apparent total magnitude in the B Band. mag phot.mag;em.opt.B
mag_h m_H Apparent total magnitude in the H Band. mag phot.mag;em.ir.H
mag_j m_J Apparent total magnitude in the J Band. mag phot.mag;em.ir.J
mag_k m_K Apparent total magnitude in the K Band. mag phot.mag;em.ir.K
mag_v m_V Apparent total magnitude in the V Band. mag phot.mag;em.opt.V
maj_ax_deg Maj. Ax. Major axis of covering ellipsoid. deg phys.angSize.sMajAxis
messier_nr Messier Messier number for this object N/A meta.id.cross
min_ax_deg Min. Ax. Minor axis of covering ellipsoid. deg phys.angSize.sMinAxis
name Name Object identifier, either from NGC or from IC. N/A meta.id;meta.main
ned_notes NED note Notes about the object exported from NED N/A meta.note
notes Notes Notes about the object from OpenNGC N/A meta.note
obj_type Type Object Type. See note for terms and symbols used. Note t N/A src.class
other_id ID Cross reference to other catalogs. N/A meta.id.cross
other_ngc Alt. NGC Other NGC number for this object in case it was duplicated in IC or NCG. N/A meta.id.cross
pos_ang Pos. Ang. Position angle of covering ellipsoid, north over east. deg pos.posAng
raj2000 RA J2000 Right Ascension in ICRS for Epoch J2000.0. deg pos.eq.ra;meta.main
surf_br_B Surf. Br. Mean surface brigthness within the 25 mag isophote (B-band); only given for galaxies mag/arcsec**2 phot.mag.sb

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

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