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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=642673

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*Column*	*Value*		*Explain (UCD)*
_RAJ2000	20 37 57.0841826	"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 07 14.427100	"d:m:s"	Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_RAB1950	20 35 54.4515102	"h:m:s"	Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra) (POS_EQ_RA)
_DEB1950	+30 56 40.714157	"d:m:s"	Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_Glon	72.6140417956	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	-6.0740628013	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)
642673recno	642673		Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) (RECORD)

TYC1	2686		⁽ⁱ⁾ [1,9537] TYC1 from TYC or GSC (Note 1) (meta.id.part;meta.main) (ID_MAIN:1)
TYC2	1345		⁽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	309.48785092	deg	[]? Mean Right Asc, ICRS, epoch=J2000 (3) (Note 3) (pos.eq.ra) (POS_EQ_RA_OTHER)
DEmdeg	31.12067438	deg	[]? Mean Decl, ICRS, at epoch=J2000 (3) (Note 3) (pos.eq.dec) (POS_EQ_DEC_OTHER)
pmRA	-3.1	mas/yr	[-4418.0,6544.2] prop. mot. in RAcos(dec) (Note)* (pos.pm;pos.eq.ra) (POS_EQ_PMRA)
pmDE	-2.5	mas/yr	[-5774.3,10277.3] prop. mot. in Dec (Note) (pos.pm;pos.eq.dec) (POS_EQ_PMDEC)
e_RAmdeg	83	mas	[3,183] s.e. RAcos(dec),at mean epoch (Note 5)* (stat.error) (ERROR)
e_DEmdeg	71	mas	[1,184] s.e. of Dec at mean epoch (Note 5) (stat.error) (ERROR)
e_pmRA	3.8	mas/yr	[0.2,11.5] s.e. prop mot in RAcos(dec) (Note 5)* (stat.error) (ERROR)
e_pmDE	3.6	mas/yr	[0.2,10.3] s.e. of proper motion in Dec (Note 5) (stat.error) (ERROR)
EpRAm	1985.92	yr	[1915.95,1992.53] mean epoch of RA (Note 4) (time.epoch) (TIME_EPOCH)
EpDEm	1987.30	yr	[1911.94,1992.01] mean epoch of Dec (Note 4) (time.epoch) (TIME_EPOCH)
Num	2		[2,36] Number of positions used (meta.id) (ID_NUMBER)
q_RAmdeg			[0.0,9.9] Goodness of fit for mean RA (Note 6) (meta.code.qual) (CODE_QUALITY)
q_DEmdeg			[0.0,9.9] Goodness of fit for mean Dec (Note 6) (meta.code.qual) (CODE_QUALITY)
q_pmRA			[0.0,9.9] Goodness of fit for pmRA (Note 6) (meta.code.qual) (CODE_QUALITY)
q_pmDE			[0.0,9.9] Goodness of fit for pmDE (Note 6) (meta.code.qual) (CODE_QUALITY)
BTmag	12.860	mag	[2.183,16.581] Tycho-2 BT magnitude (Note 7) (phot.mag;em.opt.B) (PHOT_TYCHO_B)
e_BTmag	0.171	mag	[0.014,1.977] s.e. of BT (Note 7) (stat.error) (ERROR)
VTmag	12.229	mag	[1.905,15.193] Tycho-2 VT magnitude (Note 7) (phot.mag;em.opt.V) (PHOT_TYCHO_V)
e_VTmag	0.137	mag	[0.009,1.468] s.e. of VT (Note 7) (stat.error) (ERROR)
prox	704		[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)	309.48785917	deg	⁽ⁱ⁾ Observed Tycho-2 Right Ascension, ICRS (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)
DE(ICRS)	31.12068000	deg	⁽ⁱ⁾ Observed Tycho-2 Declination, ICRS (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN)
EpRA-1990	1.64	yr	[0.81,2.13] epoch-1990 of RAdeg (time.epoch) (TIME_EPOCH)
EpDE-1990	1.78	yr	[0.72,2.36] epoch-1990 of DEdeg (time.epoch) (TIME_EPOCH)
e_RAdeg	85.7	mas	s.e.RAcos(dec), of observed Tycho-2 RA (Note 5)* (stat.error) (ERROR)
e_DEdeg	72.5	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	0.2		[-1,1] correlation (RAdeg,DEdeg) (stat.correlation) (STAT_CORRELATION)

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