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I/252/out
1511 22.969248 ...
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I/252
..out
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Distance ρ
Position angle θ
Distance (x,y)
Galactic
J2000
B1950
Ecl. J2000
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in:
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Simple Target
List Of Targets
Fast Xmatch with large catalogs or Simbad
Target
Name (resolved by
Sesame
) or
Position
:
J2000
B1975
B1950
B1900
B1875
B1855
Galactic
Supergal.
Ecl.J2000
Target dimension:
deg
arcmin
arcsec
Radius
Box size
I/252
1307756
The USNO-A2.0 Catalogue (Monet+ 1998)
ReadMe+ftp
Similar Catalogs
Post annotation
1.
I/252/out
The Full Catalogue
(Note)
(526280881 rows)
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.
Simple Constraint
List Of Constraints
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Constraints
applied on Columns
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)
Standard
Original
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Column
Constraint
Explain
(
UCD
)
USNO-A2.0
(char)
(n)
(i)
Original designation in USNO-A2.0 catalogue
(Note)
(
meta.id;meta.main
)
(
ID_MAIN
)
RAJ2000
deg
(i)
Right ascension (ICRS) mean of blue/red plates
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
DEJ2000
deg
(i)
Declination (ICRS) mean of blue/red plates
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
ACTflag
(char)
[A] 'A' when star belongs to ACT (Cat.
I/246
)
(
meta.code
)
(
CODE_MISC
)
Mflag
(char)
[*] '*' magnitudes are probably wrong
(
meta.code
)
(
CODE_MISC
)
Bmag
mag
Magnitude from blue plate
(
phot.mag;em.opt.B
)
(
PHOT_PHG_B
)
Rmag
mag
Magnitude from red plate
(
phot.mag;em.opt.R
)
(
PHOT_PHG_R
)
Epoch
yr
(n)
Mean epoch of position
(Note)
(
time.epoch
)
(
TIME_EPOCH
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
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UCD1
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