VizieR

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I/252/out

The USNO-A2.0 Catalogue (Monet+ 1998)

The Full Catalogue (526280881 rows)

USNO-A2.0===1200-06769566

Note: USNO-A2.0 contains 526,280,881 sources, and is based on a re-reduction of the Precision Measuring Machine (PMM) scans from POSS-I O and E plates (>=-18°) and SRC-J and ESO-R plates (<=-20°). USNO-A2.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory.
The major difference between USNO-A2.0 and its previous version USNO-A1.0 is that A1.0 used the Guide Star Catalog as its reference frame whereas A2.0 uses the ICRF as realized by the USNO ACT catalog (Urban et al. 1997). The VizieR search engine uses an on-line compressed version (3.6Gbytes) which was generated at CDS.

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*Column*	*Value*		*Explain (UCD)*
_RAJ2000	11 41 03.01344	"h:m:s"	Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra) (POS_EQ_RA)
_DEJ2000	+34 12 05.8320	"d:m:s"	Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec) (POS_EQ_DEC)
_RAB1950	11 38 25.22385	"h:m:s"	Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra) (POS_EQ_RA)
_DEB1950	+34 28 43.7431	"d:m:s"	Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec) (POS_EQ_DEC)
_Glon	183.54957004	deg	Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon) (POS_GAL_LON)
_Glat	+73.32462678	deg	Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat) (POS_GAL_LAT)

USNO_A2_0	1200-06769566		⁽ⁱ⁾ Original designation in USNO-A2.0 catalogue (Note) (meta.id;meta.main) (ID_MAIN)
RAJ2000	175.262556	deg	⁽ⁱ⁾ Right ascension (ICRS) mean of blue/red plates (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)
DEJ2000	+34.201620	deg	⁽ⁱ⁾ Declination (ICRS) mean of blue/red plates (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN)
ACTflag	A		[A] 'A' when star belongs to ACT (Cat. I/246) (meta.code) (CODE_MISC)
Mflag			[] '' magnitudes are probably wrong (meta.code) (CODE_MISC)
Bmag	99.9	mag	Magnitude from blue plate (phot.mag;em.opt.B) (PHOT_PHG_B)
Rmag	5.4	mag	Magnitude from red plate (phot.mag;em.opt.R) (PHOT_PHG_R)
Epoch	0.000	yr	Mean epoch of position (Note) (time.epoch) (TIME_EPOCH)

The following problems were encountered in this VizieR run:

****vc_coo: abnormal Epoch value from column 'Epoch': 0.000000 (assume 2000.000000)
****vc_coo: abnormal Epoch value from column 'Epoch': 0.000000 (assume 2000.000000)
****vc_coo: abnormal Epoch value from column 'Epoch': 0.000000 (assume 2000.000000)

If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR2546221.err (2023-06-06T02:00:47)
-5
-ref=VIZ61eb03605165
-ref=VIZ61eb03605165
-out.add=.
-source=I/252/out
USNO-A2.0===1200-06769566
-out.orig=o

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