1197A I/197A Tycho Input Catalogue, Revised version D Egret P Didelon B J McLean J L Russell C Turon Astron. Astrophys. 258 217 1992 1992A&A...258..217E I/196 : Hipparcos Input Catalogue, Version 2 (Turon+, 1993) I/207 : Preliminary list from Tycho observations (Halbwachs+ 1994) Positional data Photometry A Tycho Input Catalogue of three million stars brighter than V=12.1 has been prepared, for the needs of the Tycho mission (Hipparcos satellite). This catalogue results from the cross-matching of a subset of the Hubble Space Telescope Guide Star Catalog with the Hipparcos INCA database. References to these major catalogues, and details about the cross-matching procedures are to be found in the paper published in Astron. Astrophys. 258, 217-222 (May 1992). Among the 3,154,204 stars of the Tycho Input Catalogue, only a bit more than 1 million will appear in the final Tycho catalogue. A preliminary selection was done in the Recognition process, that was based on the first year of the satellite scientific mission (Halbwachs et al., =1994A&A...281L..25H). 1,049,971 stars were thus selected, and are flagged in this version of the Tycho Input Catalogue.

TICID1 GSC region number --- TICID2 GSC running number in region --- RA10mas Right ascension J2000.0 Epoch 1990, in 0.01arcsec 10mas SPD10mas South Polar Distance (=Dec+90) Epoch 1990, in 0.01arcsec 10mas e_pos Error on position in 0.01arcsec 10mas e_B Error on B mag. in 0.01 mag. (0=unknown) .01mag B B magnitude in 0.01 mag. (0=unknown) .01mag e_V Error on V mag. in 0.01 mag. (0=unknown) .01mag V V magnitude in 0.01 mag. (0=unknown) .01mag Flag1 FK5 star --- Flag2 IRS star --- Flag3 Photometric standard for Tycho --- Flag4 Monitor star : random set --- Flag5 Monitor star : selected from TIC flags --- Flag6 Monitor star : NGC, ADS system --- Flag7 Photometric star --- Flag8 Monitor star (logical OR of #1 to #6) --- Flag9 GSC/INCA discrepancy --- Flag10 Star selected in the Recognition process --- Flag11 GSC/INCA magnitude discrepancy --- Flag12 INCA (or CDA) entry NOT in GSC 1.0 --- Flag13 Source of position (0: GSC; 1: INCA) --- Flag14 id.- for B magnitude --- Flag15 id.- for V magnitude --- Flag16 Non-stellar GSC image ("unknown" class) --- Flag17 Component of TIC pair (sep. < 20") --- Flag18 Close pair with one single entry (sep < 3") --- Flag19 Component of INCA pair (sep < 10") --- Flag20 INCA/CDA star (cross-id. in Annex file) --- Flag21 Known proper-motion --- Flag22 Known high proper-motion (>0.15"/yr) --- Flag23 Known parallax --- Flag24 Known variable --- Flag25 Known multiple system --- Flag26 Hipparcos Input Catalogue star (Annex file) --- Flag27 CDA star (complementary astrometric data) --- TICID1 GSC region number --- TICID2 GSC running number in region --- NCSI CSI number (from SIMBAD and the INCA database) --- Comp Component code (A, B, AB, etc.) or blank --- ID Star Identification (from HD, DM, or other catalogues) --- Dmag Mag(GSC) - Mag(INCA) mag Dpos Distance pos(GSC)-pos(INCA) in arcsec. arcsec HIC HIPPARCOS Input Catalogue number --- N.P.M. Kuin ADC 1994Nov09 UNKNOWN UNKNOWN * 10-Jan-1994: Original version of this file: Jean-Louis Halbwachs [CDS] * 09-Nov-1994: This file rewritten by N.P.M. Kuin [ADC] UNKNOWN UNKNOWN Notes and warnings concerning the present release: The following corrections have been applied to the TIC, generating some differences with respect to the 'operational' version of TIC described in the Astron. & Astrophysics paper : o corrected coordinates for high proper motion stars (see footnote 2 in the A&A Paper). These stars are the stars with flag 12 (INCA star without GSC counterpart) and flag 22 (proper motion larger than 0.15"/yr). 2130 objects in TIC have both flags set. For these stars, the original INCA position (at epoch 1990) have been searched for, and the correct positions restored. o additional TIC entries have been assigned a consistent GSC number provided by the STScI team (rather than a number starting at 10001); note that the brighter ones (V< 7.5) appear in GSC version 1.1, with plate name +056. o in three GSC regions (3588, 5706, and 7899) where the numbering sequence restarts to 0 after 10000 in the GSC (in the CD-ROM edition of GSC only the last four digits are printed), correct numbers have been restored in TIC (thus in the range 10000-13000). o The HIC numbers in the annex file have been updated (from the old IC5 in the 'operational version', to the HIC numbers as published in ESA SP-1136). Note that there are 23 HIC duplicates (TIC entries having the same HIC number : these are A and B components of close systems), and that there are 110 entries which have been suppressed from the Hipparcos Catalogue after the start of the mission and before the publication of the Catalogue (see Table 1 in ESA SP-1136). o The annex file contains also 60 INCA duplicates (TIC entries having the same INCA identification); this is due to late corrections in the INCA file, and the duplicate TIC entry is likely to be redundant. I_197A.xml