Information on Service 'OpenNGC'

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:

form -- allows access via an HTML form

This service is published as follows:

Within the set(s) local with the renderer form

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):

Name	Table Head	Description	Unit	UCD
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
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.

Name	Table Head	Description	Unit	UCD
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.

Name	Table Head	Description	Unit	UCD	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

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