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I/275/ac2002
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I/275
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Distance ρ
Position angle θ
Distance (x,y)
Galactic
J2000
B1950
Ecl. J2000
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) or
Position
:
J2000
B1975
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B1875
B1855
Galactic
Supergal.
Ecl.J2000
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I/275
230480
The AC 2000.2 Catalogue (Urban+ 2001)
ReadMe+ftp
1998AJ....115.1212U
Similar Catalogs
Post annotation
1.
I/275/ac2002
All 4,621,751 stars from the AC2000.2 Catalogue (
Detailed introduction
)
(Note)
(4621751 rows)
meta
I/275/ac2002
Detailed introduction
can be found in
intro.tex
(see also
http://aries.usno.navy.mil/ad/ac.html
) Direct links to Hipparcos and Tycho observations are provided from the relevant columns.
Simple Constraint
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Constraints
applied on Columns
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Column
Constraint
Explain
(
UCD
)
recno
Record number assigned by the VizieR team. Should Not be used for identification.
(
meta.record
)
(
RECORD
)
RAJ2000
"h:m:s"
(i)
R.A. , at epoch mEp (J2000)
(Note 1)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
DEJ2000
"d:m:s"
(i)
Decl. , at epoch mEp
(Note)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
Bmag
mag
Observed B magnitude
(Note 2)
(
phot.mag;em.opt.B
)
(
PHOT_TYCHO_B
)
mEp
yr
Mean epoch of position
(
time.epoch
)
(
TIME_EPOCH
)
Num
Number of images used for astrometry
(
meta.number
)
(
NUMBER
)
e_RAJ2000
arcsec
(n)
Standard deviation of Right Ascension
(Note 3)
(
stat.error;pos.eq.ra
)
(
ERROR
)
e_DEJ2000
arcsec
(n)
Standard deviation of Declination
(Note 3)
(
stat.error;pos.eq.dec
)
(
ERROR
)
ACnum
(i)
USNO generated identifier
(
meta.id;meta.main
)
(
ID_MAIN
)
HIP
(n)
Hipparcos number
(Note 4)
(
meta.id
)
(
ID_ALTERNATIVE
)
m_HIP
(char)
Hipparcos component identifier
(Note 4)
(
meta.code.multip
)
(
CODE_MULT_INDEX
)
TYC2
(char)
Tycho-2 identifier
(Note 5)
(
meta.id
)
(
ID_ALTERNATIVE
)
Vmag
mag
(n)
V magnitude
(Note 2)
(
phot.mag;em.opt.V
)
(
PHOT_TYCHO_V
)
magflg
(n)
[1,3] Magnitude warning flag
(Note 6)
(
meta.code
)
(
CODE_MISC
)
verflg
(n)
[1] Verification flag
(Note 7)
(
meta.code
)
(
CODE_MISC
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
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