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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
NB: The epoch used for the query is the original epoch of the table(s)
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J/AJ/169/173
3189
Observations & positions of 377 AGNs using VLBI (Xu+, 2025)
ReadMe+ftp
2025AJ....169..173X
Similar Catalogs
Post annotation
1.
J/AJ/169/173/table3
Source position catalog from quad-band VLBI observations
(377 rows)
meta
J/AJ/169/173/table3
Simple Constraint
List Of Constraints
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Constraints
applied on Columns
(
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)
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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
)
ICRF
(char)
International Celestial Reference Frame identifier (JHHMMSS.s+DDMMSS)
(
meta.id;meta.main
)
(
ID_MAIN
)
IERS
(char)
International Earth Rotation and Reference Systems Service identifier (HHMM+DDd, B1950 equinox)
(
meta.id
)
(
ID_ALTERNATIVE
)
Cat
(char)
Source category
(Note 1)
(
meta.code
)
(
CODE_MISC
)
RAICRS
"h:m:s"
(i)
Hour of Right Ascension (ICRF) at Ep=2015.0
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
DEICRS
"d:m:s"
(i)
Degree of Declination (ICRF) at Ep=2015.0
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
e_RAICRS
s
[5.5e-7/5e-5] Uncertainty in RAs
(
stat.error;pos.eq.ra
)
(
ERROR
)
e_DEICRS
arcsec
[4.9e-6/7.7e-4] Uncertainty in DEs
(
stat.error;pos.eq.dec
)
(
ERROR
)
Correl
[-0.9/0.4] Correlation between RA and DE coordinates
(
stat.correlation
)
(
STAT_CORRELATION
)
<MJD>
d
[58861/60403] Mean Modified Julian Date (JD-2400000.5) of sessions where the source was observed
(
time.epoch;stat.mean
)
(
TIME_DATE
)
1stMJD
d
[58090/60403] Modified Julian Date (JD-2400000.5) of first session
(
time.epoch
)
(
TIME_DATE
)
LastMJD
d
[58910/60487] Modified Julian Date (JD-2400000.5) of last session
(
time.epoch
)
(
TIME_DATE
)
Nses
[1/174] Number of sessions
(
meta.number
)
(
NUMBER
)
Ndel
[20/96951] Number of group delay observations used to estimate its coordinates
(
meta.number
)
(
NUMBER
)
Nrat
[0/0] Number of delay rate observations used
(Note 2)
(
meta.number
)
(
NUMBER
)
Simbad
ask the
Simbad
data-base about this object
(
meta.ref.url
)
(
DATA_LINK
)
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(i)
indexed column
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https://cdsannotations.cds.unistra.fr/annotations/vizierTable//
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