This table is available for ADQL queries and through the TAP endpoint.
Resource Description:
URAT1 is an observational catalog at a mean epoch between 2012.3 and 2014.6; ot covers the magnitude range 3 to 18.5 in R-band, with a positional precision of 5 to 40 mas. It covers most of the northern hemisphere and some areas down to -24.8° in declination.
In the GAVO data center, we left out all columns originating from cross matches with other catalogs; on-the fly crossmatches can be done in our TAP service.
For a list of all services and tables belonging to this table's resource, see Information on resource 'The first U.S. Naval Observatory Astrometric Robotic Telescope Catalog URAT1 star catalog'
This table has an associated publication. If you use data from it, it may be appropriate to reference 2015AAS...22543301Z (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.
To cite the table as such, we suggest the following BibTeX entry:
@MISC{vo:urat1_main, year=2015, title={The first U.S. Naval Observatory Astrometric Robotic Telescope Catalog {URAT1} star catalog}, author={Zacharias, N. and Finch, C. and Subasavage, J. and Bredthauer, G. and Crockett, C. and Divittorio, M. and Furguson, E. and Harris, F. and Harris, H. and Henden, A. and Kilian, C. and Munn, J. and Rafferty, T. and Rhodes, A. and Schultheiss, M. and Tilleman, T. and Wieder, G.}, url={http://dc.zah.uni-heidelberg.de/tableinfo/urat1.main}, howpublished={{VO} resource provided by the {GAVO} Data Center} }
Sorted by DB column index. [Sort alphabetically]
Name | Table Head | Description | Unit | UCD |
---|---|---|---|---|
id | ID | URAT1 recommended identifier (ZZZ-NNNNNN) | N/A | meta.id;meta.main |
raj2000 | RA | Right ascension on ICRS, at Epoch [Note 1] | deg | pos.eq.ra;meta.main |
dej2000 | Dec | Declination on ICRS, at Epoch [Note 1] | deg | pos.eq.dec;meta.main |
pos_err_scatter | Err. scat. | Position error per coordinate, from scatter | deg | stat.error;pos |
pos_err_model | Err. mod. | Position error per coordinate, from model | deg | stat.error;pos |
epoch | Epoch | Mean URAT observation epoch | yr | time.epoch |
mag | Mag | Mean URAT model fit magnitude (between R and I) [Note 4] | mag | phot.mag;em.opt.R |
e_mag | Err. Mag | Error in URAT model fit magnitude, derived from the scatter of individual observations, plus a floor of 0.01. | mag | stat.error;phot.mag;em.opt.R |
n_sets | #sets | Total number of images (observations) [Note 3] | N/A | meta.number;obs |
n_sets_pos | #sets pos | Number of sets used for mean position [Note 3] | N/A | meta.number;obs |
n_sets_mag | #sets mag | Number of sets used for URAT magnitude [Note 3] | N/A | meta.number;obs |
refstar | Ref? | Largest reference star flag [Note 6] | N/A | meta.code.qual |
n_im | #Obs | Total number of images (observations) | N/A | meta.number;obs |
n_im_used | #Obs used | Number of images used for mean position | N/A | meta.number;obs |
n_grating | #Grating | Total number of 1st order grating observations | N/A | meta.number;obs |
n_grating_used | #Grating used | Number of 1st order grating positions used | N/A | meta.number;obs |
Columns that are parts of indices are marked like this.
VO nerds may sometimes need VOResource XML for this table.