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The Tycho-2 Catalogue (Hog+ 2000)
ReadMe
*The Tycho-2 main catalogue
(2539913 rows)
recno=567786
Column
Value
Explain
(
UCD
)
Aladin Image
Start
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for a view of the optical sky centered on this source
_RAJ2000
06 52 03.985
"h:m:s"
Right ascension (FK5) Equinox=J2000.0 Epoch=J2000.000, proper motions taken into account (computed by VizieR, not part of the original data) (
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
_DEJ2000
+31 21 37.45
"d:m:s"
Declination (FK5) Equinox=J2000.0 Epoch=J2000.000, proper motions taken into account (computed by VizieR, not part of the original data) (
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
_RAB1950
06 48 50.490
"h:m:s"
Right ascension (FK4) Equinox=B1950.0 Epoch=J1950.000, proper motions taken into account (computed by VizieR, not part of the original data) (
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
_DEB1950
+31 25 16.73
"d:m:s"
Declination (FK4) Equinox=B1950.0 Epoch=J1950.000, proper motions taken into account (computed by VizieR, not part of the original data) (
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
_Glon
184.5115
deg
Galactic longitude Epoch=J2000.000, proper motions taken into account (computed by VizieR, not part of the original data) (
pos.galactic.lon
)
(
POS_GAL_LON
)
_Glat
13.8504
deg
Galactic latitude Epoch=J2000.000, proper motions taken into account (computed by VizieR, not part of the original data) (
pos.galactic.lat
)
(
POS_GAL_LAT
)
recno
567786
Record number within the original table (starting from 1) (
meta.record
)
(
RECORD
)
TYC1
2436
[1,9537] TYC1 from TYC or GSC
(Note 1)
(
meta.id.part;meta.main
)
(
ID_MAIN:1
)
TYC2
333
[1,12121] TYC2 from TYC or GSC
(Note 1)
(
meta.id.part;meta.main
)
(
ID_MAIN:2
)
TYC3
1
[1,3] TYC3 from TYC
(Note 1)
(
meta.id.part;meta.main
)
(
ID_MAIN:3
)
pflag
[ PX] mean position flag
(Note 2)
(
meta.code
)
(
CODE_MISC
)
RAmdeg
103.01660548
deg
[]? Mean Right Asc, ICRS, epoch=J2000 (3)
(Note 3)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
DEmdeg
31.36039497
deg
[]? Mean Decl, ICRS, at epoch=J2000 (3)
(Note 3)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
pmRA
-6.3
mas/yr
[-4418.0,6544.2] prop. mot. in RA*cos(dec)
(Note)
(
pos.pm;pos.eq.ra
)
(
POS_EQ_PMRA
)
pmDE
-8.8
mas/yr
[-5774.3,10277.3] prop. mot. in Dec
(Note)
(
pos.pm;pos.eq.dec
)
(
POS_EQ_PMDEC
)
e_RAmdeg
87
mas
[3,183] s.e. RA*cos(dec),at mean epoch
(Note 5)
(
stat.error
)
(
ERROR
)
e_DEmdeg
106
mas
[1,184] s.e. of Dec at mean epoch
(Note 5)
(
stat.error
)
(
ERROR
)
e_pmRA
2.6
mas/yr
[0.2,11.5] s.e. prop mot in RA*cos(dec)
(Note 5)
(
stat.error
)
(
ERROR
)
e_pmDE
2.7
mas/yr
[0.2,10.3] s.e. of proper motion in Dec
(Note 5)
(
stat.error
)
(
ERROR
)
EpRAm
1975.74
yr
[1915.95,1992.53] mean epoch of RA
(Note 4)
(
time.epoch
)
(
TIME_EPOCH
)
EpDEm
1963.79
yr
[1911.94,1992.01] mean epoch of Dec
(Note 4)
(
time.epoch
)
(
TIME_EPOCH
)
Num
4
[2,36] Number of positions used (
meta.id
)
(
ID_NUMBER
)
q_RAmdeg
0.4
[0.0,9.9] Goodness of fit for mean RA
(Note 6)
(
meta.code.qual
)
(
CODE_QUALITY
)
q_DEmdeg
1.4
[0.0,9.9] Goodness of fit for mean Dec
(Note 6)
(
meta.code.qual
)
(
CODE_QUALITY
)
q_pmRA
0.4
[0.0,9.9] Goodness of fit for pmRA
(Note 6)
(
meta.code.qual
)
(
CODE_QUALITY
)
q_pmDE
1.4
[0.0,9.9] Goodness of fit for pmDE
(Note 6)
(
meta.code.qual
)
(
CODE_QUALITY
)
BTmag
13.374
mag
[2.183,16.581] Tycho-2 BT magnitude
(Note 7)
(
phot.mag;em.opt.B
)
(
PHOT_TYCHO_B
)
e_BTmag
0.374
mag
[0.014,1.977] s.e. of BT
(Note 7)
(
stat.error
)
(
ERROR
)
VTmag
12.165
mag
[1.905,15.193] Tycho-2 VT magnitude
(Note 7)
(
phot.mag;em.opt.V
)
(
PHOT_TYCHO_V
)
e_VTmag
0.202
mag
[0.009,1.468] s.e. of VT
(Note 7)
(
stat.error
)
(
ERROR
)
prox
999
[3,999] proximity indicator
(Note 8)
(
meta.code
)
(
CODE_MISC
)
TYC
[T] Tycho-1 star
(Note 9)
(
meta.code
)
(
CODE_MISC
)
HIP
[1,120404] Hipparcos number (
meta.id
)
(
ID_ALTERNATIVE
)
CCDM
CCDM component identifier for HIP stars
(Note 10)
(
meta.code.multip
)
(
CODE_MULT_INDEX
)
RA(ICRS)
103.01662167
deg
Observed Tycho-2 Right Ascension, ICRS (
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
DE(ICRS)
31.36042306
deg
Observed Tycho-2 Declination, ICRS (
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
EpRA-1990
1.81
yr
[0.81,2.13] epoch-1990 of RAdeg (
time.epoch
)
(
TIME_EPOCH
)
EpDE-1990
1.69
yr
[0.72,2.36] epoch-1990 of DEdeg (
time.epoch
)
(
TIME_EPOCH
)
e_RAdeg
97.0
mas
s.e.RA*cos(dec), of observed Tycho-2 RA
(Note 5)
(
stat.error
)
(
ERROR
)
e_DEdeg
131.1
mas
s.e. of observed Tycho-2 Dec
(Note 5)
(
stat.error
)
(
ERROR
)
posflg
[ DP] type of Tycho-2 solution
(Note 11)
(
meta.id;stat.fit
)
(
FIT_TYPE
)
corr
-0.1
[-1,1] correlation (RAdeg,DEdeg) (
stat.correlation
)
(
STAT_CORRELATION
)
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