Information on Service 'USNO-B query'

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The USNO-B catalog is an all-sky catalog of about 1e9 objects including their proper motions, based on scans of several sky surveys conducted between 1950 and the late 1990ies.

For a list of all services and tables belonging to this service's resource, see Information on resource 'The USNO-B 1.0 Catalog'

Overview

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This service is not published. This can mean that it was deemed too unimportant, for internal use only, or is just a helper for a published service. Equally likely, however, it is under development, abandoned in development or otherwise unfinished. Exercise caution.

Other services provided on the underlying data include:

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
B1f B1 field# B1 Field number in survey N/A obs.field
B1mag mag(B1) First blue magnitude (B1) mag phot.mag;em.opt.B
B2f B2 field# B2 Field number in survey N/A obs.field
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
DEJ2000 DEC (J2000) Declination at Eq=J2000, Ep=J2000 deg pos.eq.dec;meta.main
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
R1f R1 field# R1 Field number in survey N/A obs.field
R2f R2 field# R2 Field number in survey N/A obs.field
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
RAJ2000 RA (J2000) Right Ascension at Eq=J2000, Ep=J2000 deg pos.eq.ra;meta.main
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
B1mag mag(B1) First blue magnitude (B1) mag phot.mag;em.opt.B
B2mag mag(B2) Second blue magnitude (B2) mag phot.mag;em.opt.B
DEJ2000 DEC (J2000) Declination at Eq=J2000, Ep=J2000 deg pos.eq.dec;meta.main
Epoch Epoch Mean epoch of observation yr time.epoch
Imag mag(I) Infrared (N) magnitude mag phot.mag;em.opt.I
pmDE pm(DEC) Proper motion in DE deg/yr pos.pm;pos.eq.dec
pmRA pm(RA) Proper motion in RA deg/yr pos.pm;pos.eq.ra
R1mag mag(R1) First red magnitude (R1) mag phot.mag;em.opt.R
R2mag mag(R2) Second red magnitude (R2) mag phot.mag;em.opt.R
RAJ2000 RA (J2000) Right Ascension at Eq=J2000, Ep=J2000 deg pos.eq.ra;meta.main

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
RAJ2000 RA (J2000) Right Ascension at Eq=J2000, Ep=J2000 deg pos.eq.ra;meta.main 1
DEJ2000 DEC (J2000) Declination at Eq=J2000, Ep=J2000 deg pos.eq.dec;meta.main 1
Epoch Epoch Mean epoch of observation yr time.epoch 5
pmRA pm(RA) Proper motion in RA deg/yr pos.pm;pos.eq.ra 5
pmDE pm(DEC) Proper motion in DE deg/yr pos.pm;pos.eq.dec 5
e_RAdeg Err(RA)cos(DEC) Mean error on RAdeg*cos(DEdeg) at Epoch deg stat.error;pos.eq.ra 11
e_DEdeg Err(DEC) Mean error on DEdeg at Epoch deg stat.error;pos.eq.dec 11
e_pmRA Err(pm(RA)) Mean error on pmRA deg/yr stat.error;pos.pm;pos.eq.ra 15
e_pmDE Err(pm(DEC)) Mean error on pmDE deg/yr stat.error;pos.pm;pos.eq.dec 15
muPr P(pm) Total Proper Motion probability N/A stat.fit.goodness 20
Flags Flags Flags on object Note * N/A meta.code 20
B1mag mag(B1) First blue magnitude (B1) mag phot.mag;em.opt.B 20
B1S B1s B1 Survey code N/A meta.id 20
B1f B1 field# B1 Field number in survey N/A obs.field 20
B1sg B1 star/gal. B1 Star/galaxy separation, A=Galaxy, L=Star N/A src.class.starGalaxy 20
B1xi xi(B1) B1 Residual in X direction deg stat.fit.residual;pos.cartesian.x 20
B1eta eta(B1) B1 Residual in Y direction deg stat.fit.residual;pos.eq.dec;arith.diff 20
R1mag mag(R1) First red magnitude (R1) mag phot.mag;em.opt.R 20
R1S R1s R1 Survey code N/A meta.id 20
R1f R1 field# R1 Field number in survey N/A obs.field 20
R1sg R1 star/gal. R1 Star/galaxy separation, A=Galaxy, L=Star N/A src.class.starGalaxy 20
R1xi xi(R1) R1 Residual in X direction deg stat.fit.residual;pos.cartesian.x 20
R1eta eta(R1) R1 Residual in Y direction deg stat.fit.residual;pos.eq.dec;arith.diff 20
B2mag mag(B2) Second blue magnitude (B2) mag phot.mag;em.opt.B 20
B2S B2s B2 Survey code N/A meta.id 20
B2f B2 field# B2 Field number in survey N/A obs.field 20
B2sg B2 star/gal. B2 Star/galaxy separation, A=Galaxy, L=Star N/A src.class.starGalaxy 20
B2xi xi(B2) B2 Residual in X direction deg stat.fit.residual;pos.cartesian.x 20
B2eta eta(B2) B2 Residual in Y direction deg stat.fit.residual;pos.eq.dec;arith.diff 20
R2mag mag(R2) Second red magnitude (R2) mag phot.mag;em.opt.R 20
R2S R2s R2 Survey code N/A meta.id 20
R2f R2 field# R2 Field number in survey N/A obs.field 20
R2sg R2 star/gal. R2 Star/galaxy separation, A=Galaxy, L=Star N/A src.class.starGalaxy 20
R2xi xi(R2) R2 Residual in X direction deg stat.fit.residual;pos.cartesian.x 20
R2eta eta(R2) R2 Residual in Y direction deg stat.fit.residual;pos.eq.dec;arith.diff 20
Imag mag(I) Infrared (N) magnitude mag phot.mag;em.opt.I 20
I_S I_s I Survey code N/A meta.id 20
If I field# I Field number in survey N/A obs.field 20
Isg I star/gal. I Star/galaxy separation, A=Galaxy, L=Star N/A src.class.starGalaxy 20
Ixi xi(I) I Residual in X direction deg stat.fit.residual;pos.cartesian.x 20
Ieta eta(I) I Residual in Y direction deg stat.fit.residual;pos.eq.dec;arith.diff 20
Ndet N_detect Number of detections N/A meta.number 21
fit_RA Mean err RA fit Mean error on RA fit deg stat.error 25
fit_DE Mean err DEC fit Mean error on DE fit deg stat.error 25

This service uses code provided by Astrometry.net. For more details visit http://astrometry.net. The field metadata were, in part, taken from CDS' Vizier service.

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

Note *
M = Existence in a proper motion catalog,
s = object on a diffraction spike,
Y = Correlation with YS4.0 catalog (Monet, in prep.)