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The 7 columns in color are computed by VizieR, and are not part of the original data.

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.

I/252/out The USNO-A2.0 Catalogue (Monet+ 1998)

The Full Catalogue (526280881 rows) (Note)
img(gal)

start AladinLite
Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
_RAB1950
"h:m:s"
_DEB1950
"d:m:s"
_Glon
deg
_Glat
deg
USNO-A2.0

RAJ2000
deg
DEJ2000
deg
ACTflag

Mflag

Bmag
mag
Rmag
mag
Epoch
yr
1 9.90913 50 29.92536+33 42 30.772813 48 16.71922+33 57 20.6141063.87889292+75.688109641200-07170048207.624689+33.708548    17.116.81950.370
VII/1B/catalog Revised New General Catalogue (Sulentic+, 1973)
The Revised NGC Catalog (8163 rows)
img(gal)
start AladinLite
Full

_r
arcsec
_RAJ2000
"h:m:s"
_DEJ2000
"d:m:s"
_RAB1950
"h:m:s"
_DEB1950
"d:m:s"
_Glon
deg
_Glat
deg
NGC

m_

Type

RA1975
"h:m:s"
DE1975
"d:m:s"
Xpos
mm
Ypos
mm
Mag
mag
r_

Notes

_RA.icrs
"h:m:s"
_DE.icrs
"d:m:s"
1 013 50 30.6+33 42 3613 48 17.4+33 57 26063.8801+75.68545318A 513 49.4+33 50 36 9413.52*,V*,HO548A13 50.5+33 43
2 013 50 30.6+33 42 3613 48 17.4+33 57 26063.8801+75.68545318B 513 49.4+33 50 36 95    O548B13 50.5+33 43
3 013 50 30.6+33 42 3613 48 17.4+33 57 26063.8801+75.68545319   513 49.4+33 50 36 9515.03  13 50.5+33 43
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