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I/259/tyc2

The Tycho-2 Catalogue (Hog+ 2000)

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*The Tycho-2 main catalogue (2539913 rows)

recno=1834931

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*Column*	*Value*		*Explain (UCD)*
_RAJ2000	17 49 10.4770355	"h:m:s"	Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra) (POS_EQ_RA)
_DEJ2000	-31 42 11.536988	"d:m:s"	Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_RAB1950	17 45 55.4745251	"h:m:s"	Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra) (POS_EQ_RA)
_DEB1950	-31 41 16.642519	"d:m:s"	Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_Glon	358.0289402828	deg	Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon) (POS_GAL_LON)
_Glat	-2.0883812687	deg	Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat) (POS_GAL_LAT)
1834931recno	1834931		Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) (RECORD)

TYC1	7377		⁽ⁱ⁾ [1,9537] TYC1 from TYC or GSC (Note 1) (meta.id.part;meta.main) (ID_MAIN:1)
TYC2	1056		⁽ⁱ⁾ [1,12121] TYC2 from TYC or GSC (Note 1) (meta.id.part;meta.main) (ID_MAIN:2)
TYC3	1		⁽ⁱ⁾ [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	267.29365427	deg	[]? Mean Right Asc, ICRS, epoch=J2000 (3) (Note 3) (pos.eq.ra) (POS_EQ_RA_OTHER)
DEmdeg	-31.70320547	deg	[]? Mean Decl, ICRS, at epoch=J2000 (3) (Note 3) (pos.eq.dec) (POS_EQ_DEC_OTHER)
pmRA	4.7	mas/yr	[-4418.0,6544.2] prop. mot. in RAcos(dec) (Note)* (pos.pm;pos.eq.ra) (POS_EQ_PMRA)
pmDE	-9.1	mas/yr	[-5774.3,10277.3] prop. mot. in Dec (Note) (pos.pm;pos.eq.dec) (POS_EQ_PMDEC)
e_RAmdeg	3	mas	[3,183] s.e. RAcos(dec),at mean epoch (Note 5)* (stat.error) (ERROR)
e_DEmdeg	4	mas	[1,184] s.e. of Dec at mean epoch (Note 5) (stat.error) (ERROR)
e_pmRA	1.1	mas/yr	[0.2,11.5] s.e. prop mot in RAcos(dec) (Note 5)* (stat.error) (ERROR)
e_pmDE	1.1	mas/yr	[0.2,10.3] s.e. of proper motion in Dec (Note 5) (stat.error) (ERROR)
EpRAm	1991.56	yr	[1915.95,1992.53] mean epoch of RA (Note 4) (time.epoch) (TIME_EPOCH)
EpDEm	1991.18	yr	[1911.94,1992.01] mean epoch of Dec (Note 4) (time.epoch) (TIME_EPOCH)
Num	12		[2,36] Number of positions used (meta.id) (ID_NUMBER)
q_RAmdeg	1.3		[0.0,9.9] Goodness of fit for mean RA (Note 6) (meta.code.qual) (CODE_QUALITY)
q_DEmdeg	0.8		[0.0,9.9] Goodness of fit for mean Dec (Note 6) (meta.code.qual) (CODE_QUALITY)
q_pmRA	1.2		[0.0,9.9] Goodness of fit for pmRA (Note 6) (meta.code.qual) (CODE_QUALITY)
q_pmDE	0.7		[0.0,9.9] Goodness of fit for pmDE (Note 6) (meta.code.qual) (CODE_QUALITY)
BTmag	4.744	mag	[2.183,16.581] Tycho-2 BT magnitude (Note 7) (phot.mag;em.opt.B) (PHOT_TYCHO_B)
e_BTmag	0.014	mag	[0.014,1.977] s.e. of BT (Note 7) (stat.error) (ERROR)
VTmag	4.790	mag	[1.905,15.193] Tycho-2 VT magnitude (Note 7) (phot.mag;em.opt.V) (PHOT_TYCHO_V)
e_VTmag	0.009	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		[T] Tycho-1 star (Note 9) (meta.code) (CODE_MISC)
HIP	87220		[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)	267.29364167	deg	⁽ⁱ⁾ Observed Tycho-2 Right Ascension, ICRS (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)
DE(ICRS)	-31.70318389	deg	⁽ⁱ⁾ Observed Tycho-2 Declination, ICRS (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN)
EpRA-1990	1.76	yr	[0.81,2.13] epoch-1990 of RAdeg (time.epoch) (TIME_EPOCH)
EpDE-1990	1.52	yr	[0.72,2.36] epoch-1990 of DEdeg (time.epoch) (TIME_EPOCH)
e_RAdeg	3.4	mas	s.e.RAcos(dec), of observed Tycho-2 RA (Note 5)* (stat.error) (ERROR)
e_DEdeg	3.8	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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