USNO-B1: Resource Record Summary

Resource Record Summary

Catalog Service:
USNO-B1 Catalogue

Short name: USNO-B1 IVOA Identifier: ivo://fs.usno/cat/usnobPublisher: United States Naval Observatory, Flagstaff Station ivo://fs.usno/org[Pub. ID] More Info: http://astrometry.mit.edu/pica/vo_pica.html VO Compliance: Level 2: This is a VO-compliant resource.	Status: active Registered: 2005 Mar 29 20:18:15Z
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Description

USNO-B is an all-sky catalog that presents positions, proper motions, magnitudes in various optical passbands, and star/galaxy estimators for 1,042,618,261 objects derived from 3,643,201,733 separate observations. The data were obtained from scans of 7435 Schmidt plates taken for the various sky surveys during the last 50 years. USNO-B1.0 is believed to provide all-sky coverage, completeness down to V=21, 0.2" astrometric accuracy at J2000, 0.3 mag photometric accuracy in up to five colors, and 85% accuracy for distinguishing stars from nonstellar objects. A brief discussion of various issues is given here, but the actual data are available from the US Naval Observatory Web site and others.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

Publisher: United States Naval Observatory, Flagstaff Station ivo://fs.usno/org[Pub. ID]

Creator: Monet, D. G., et al.

Contact Information:

X S. Levine
Email: mailto:sel at nofs.navy.mil

Status of This Resource

This section provides some status information: the resource version, availability, and relevant dates.

Version: n/a
Availability: This is an active resource.

This service apparently provides only public data

Relevant dates for this Resource:

Representative: 2005 Mar 29

This resource was registered on: 2005 Mar 29 20:18:15Z
This resource description was last updated on: 2020 Feb 03 22:21:11Z

What This Resource is About

This section describes what the resource is, what it contains, and how it might be relevant.

Resource Class: CatalogService: This resource is a service that provides access to catalog data. You can extract data from the catalog by issuing a query, and the matching data is returned as a table.

Resource type keywords: Catalog	Subject keywords: astrometric catalogue optical astronomy finding charts photographic images
Intended audience or use: Secondary Education: This resource provides information appropriate for use in elementary education (e.g. approximate ages 14-18). Community College: This resource provides information appropriate for use in community/junior college or early university education. University: This resource provides information appropriate for use in university education. Research: This resource provides information appropriate for supporting scientific research. Amateur: This resource provides information of interest to amateur astronomers.
More Info: http://astrometry.mit.edu/pica/vo_pica.html	Literature Reference: 2003AJ....125..984M

	Data Coverage Information
	This section describes the data's coverage over the sky, frequency, and time. Wavebands covered: Optical

Available Service Interfaces

Simple Cone SearchXXSearch Me

This is a standard IVOA service that takes as input a position in the sky and a radius and returns catalog records with positions within that radius.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for the standard interface:

http://astrometry.mit.edu/cgi-bin/vo_cone6.cgi?CAT=USNO-B1&

Maximum search radius accepted: 1.0 degrees
Maximum number of matching records returned: 100000

This service supports the VERB input parameter:: Use VERB=1 to minimize the returned columns or VERB=3 to maximize.