| I/350/tyc2tdsc | Gaia EDR3 (Gaia Collaboration, 2020) Tycho-2 merged with the TDSC catalog and TDSC supplement (2561887 rows) | recno=887419 |
| Column | Value | Explain (UCD) | |
| _RAJ2000 | 17 49 33.3863354468 | "h:m:s" | Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra) |
| _DEJ2000 | +48 28 09.078007963 | "d:m:s" | Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec) |
| _RAB1950 | 17 48 15.0242044144 | "h:m:s" | Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra) |
| _DEB1950 | +48 28 59.559793711 | "d:m:s" | Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec) |
| _Glon | 75.4352489716751 | deg | Galactic longitude at Epoch=J1990, proper motions taken into account (pos.galactic.lon) |
| _Glat | +29.9171684559864 | deg | Galactic latitude at Epoch=J1990, proper motions taken into account (pos.galactic.lat) |
| 887419recno | 887419 | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) | |
| IDTyc2 | 3515-1248-1 | (i) Tycho-2 identifier (TYC1-TYC2-TYC3) (id) (meta.id;meta.main) | |
| HIP | (i) Hipparcos number (hip) (meta.id.cross) | ||
| TYC1 | 3515 | TYC1 component from TYC or GSC (tyc1) (meta.id.part;meta.main) | |
| TYC2 | 1248 | TYC2 component from TYC or GSC (tyc2) (meta.id.part;meta.main) | |
| TYC3 | 1 | TYC2 component from TYC or GSC (tyc3) (meta.id.part;meta.main) | |
| TYC | 3515012481 | Numeric Tycho-2 identifier ((tyc1*1000000)+(tyc2*10)+(tyc3)) (id_tycho) (meta.id;meta.dataset) | |
| IDTyc1 | T | Tycho-1 star (tyc) (meta.code) | |
| RAT | 267.38915833000 | deg | (i) Observed Tycho-2 Right Ascension (ICRS) at epoch 1990+EpRA1990 (ra) (pos.eq.ra;meta.main) |
| e_RAT | 27.5 | mas | Uncertainty RA*cos(dec), of observed Tycho-2 RA (eradeg) (stat.error) |
| DET | +48.46930278000 | deg | (i) Observed Tycho-2 Declination (ICRS) at epoch 1990+EpDE1990 (dec) (pos.eq.dec;meta.main) |
| e_DET | 27.8 | mas | Uncertainty of observed Tycho-2 Dec (ededeg) (stat.error) |
| RAmdeg | 267.38911978000 | deg | Mean Right Ascension (ICRS) at Ep=J2000 (ra_mdeg) (pos.eq.ra) |
| e_RAmdeg | 23.0 | mas | Uncertainty RA*cos(dec),at mean epoch (eramdeg) (stat.error) |
| DEmdeg | +48.46921215000 | deg | Mean Declination (ICRS) at Ep=J2000 (de_mdeg) (pos.eq.dec) |
| e_DEmdeg | 23.0 | mas | Uncertainty of Dec at mean epoch (edemdeg) (stat.error) |
| pmRA | -11.6 | mas/yr | (i) Proper motion in right ascension, pmRA*cos(DE) (pm_ra) (pos.pm;pos.eq.ra) |
| e_pmRA | 1.7 | mas/yr | Uncertainty proper motion in RA*cos(dec) (epmra) (stat.error;pos.pm;pos.eq.ra) |
| pmDE | -41.2 | mas/yr | (i) Proper motion in Declination (pm_de) (pos.pm;pos.eq.dec) |
| e_pmDE | 1.7 | mas/yr | Uncertainty of proper motion in Dec (epmde) (stat.error;pos.pm;pos.eq.dec) |
| EpRA1990 | 1.56 | yr | Epoch-1990 of RAdeg (ep_ra1990) (time.epoch) |
| EpDE1990 | 1.49 | yr | Epoch-1990 of DEdeg (ep_de1990) (time.epoch) |
| EpRAmdeg | 1986.88 | yr | Mean epoch of RAmdeg (epram) (time.epoch) |
| EpDEmdeg | 1986.61 | yr | Mean epoch of DEmdeg (epdem) (time.epoch) |
| Num | 6 | Number of positions used for forming mean data (num) (meta.number) | |
| Corr | -0.1 | Correlation (RAdeg,DEdeg) (corr) (stat.correlation;pos.eq.ra;pos.eq.dec) | |
| q_RAmdeg | 1.2 | Goodness of fit for mean RA (qramdeg) (meta.code.qual) | |
| q_DEmdeg | 1.1 | Goodness of fit for mean DE (qdemdeg) (meta.code.qual) | |
| q_pmDE | 1.1 | Goodness of fit for pmDe (qpmde) (meta.code.qual) | |
| q_pmRA | 1.2 | Goodness of fit for pmRa (qpmra) (meta.code.qual) | |
| pflag | Mean position flag (pflag) (meta.code) | ||
| posflg | Type of Tycho-2 solution (posflg) (meta.id;stat.fit) | ||
| CCDM | CCDM component identifier for HIP stars (ccdm) (meta.code.multip) | ||
| prox | 999 | Proximity indicator (prox) (meta.code) | |
| BTmag | 10.863 | mag | Tycho-2 BT magnitude (bt_mag) (phot.mag;em.opt.B) |
| e_BTmag | 0.048 | mag | Uncertainty of BTmag (ebtmag) (stat.error) |
| VTmag | 10.241 | mag | Tycho-2 VT magnitude (vt_mag) (phot.mag;em.opt.V) |
| e_VTmag | 0.040 | mag | Uncertainty of VTmag (evtmag) (stat.error) |
| TDSC | (i) TDSC identifier for the system (sys_no) (meta.id) | ||
| cmp | Component designation (cmp) (meta.id.part) | ||
| Nmain | Number of components in TDSC main catalogue (n_main) (meta.number) | ||
| Nsup | Number of components in the TDSC supplement (n_sup) (meta.number) | ||
| magflg | TDSC photometry flag (magflg) (meta.code) | ||
| WDS | (i) WDS identifier for the system (wds) (meta.id.cross) | ||
| Note | TDSC notes (note) (meta.note) | ||
| HD | HD identifier for TDSC entries (hd) (meta.id.cross) | ||
| rcmp | Reference component for position angle and separation (rcmp) (meta.id.assoc) | ||
| PA | deg | Position angle of the present component (cmp) with respect to the reference component (rcmp) (pa) (pos.posAng) | |
| e_PA | deg | Uncertainty of the position angle (e_pa) (stat.error) | |
| Sep | arcsec | Separation of the present component (cmp) with respect to the reference component (rcmp) (sep) (pos.angDistance) | |
| e_Sep | mas | Uncertainty of the separation (e_sep) (stat.error) | |
| e_PA.Sep | Uncertainty of the position angle * separation (epasep) (stat.error) | ||
| _RA.icrs | 267.38910973103 | deg | (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra) |
| _DE.icrs | +48.46918833555 | deg | (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec) |
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