J/A+AS/124/75 Multiple star catalogue (MSC) (Tokovinin 1997) ================================================================================ MSC - a catalogue of physical multiple stars Tokovinin A.A. VizieR DOI : 10.26093/cds/vizier.22350006 Bibcode : 2018ApJS..235....6T J/ApJS/235/6 ================================================================================ ADC_Keywords: Stars, double and multiple ; Positional data ; Radial velocities Keywords: binaries: general - catalog Description: Data on 5719 stellar systems of multiplicity 3 to 7 are given. These systems are physical and, with little exception, hierarchical. For grades 4 (N=2669) and 5 (N=2241), orbital periods are known or estimated, while for 809 systems of grade 3 some periods remain unknown. Additionally, 760 systems of grades 1 and 2 (refuted or unconfirmed hierarchies) are given for reference. A hierarchical system consists of several "elementary binaries". For each binary, the orbital period and separation are given, as well as components' magnitudes, spectral types, and estimated masses. Orbital elements are also given when available. The present version of the catalogue is the latest update of the original 1997 publication (Tokovinin, 1997-1999, J/A+AS/124/75) and its continuation in 2018ApJS..235....6T. File Summary: -------------------------------------------------------------------------------- FileName Explanations -------------------------------------------------------------------------------- ReadMe This file comp.tsv Catalog of Physical Multiple Stars (components) sys.tsv Individual subsystems orb.tsv Orbital elements notes.tsv Notes -------------------------------------------------------------------------------- Byte-by-byte Description of file: comp.tsv -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS (J2000) (1) 12- 21 F10.6 deg RAdeg Right Ascension 2000 (degrees) 23- 32 F10.6 deg DEdeg Declination 2000 (degrees) 34- 41 F8.2 mas plx Parallax 43- 46 A4 --- refpar Reference code for parallax (2) 48- 54 F7.1 mas/yr PMRA Proper motion in RA 56- 62 F7.1 mas/yr PMDE Proper motion in Dec 64- 69 F6.1 km/s RV Radial velocity 71- 72 A2 --- Comp Component label 74- 80 F7.1 arcsec Sep Separation from main component 82- 89 A8 --- Sp Spectral type 91- 96 I6 --- HIP Hipparcos number 98-103 I6 --- HD HD number 105-109 F5.2 mag Bmag B-band magnitude 111-115 F5.2 mag Vmag V-band magnitude 117-121 F5.2 mag Imag I_C-band magnitude 123-127 F5.2 mag Jmag J-band magnitude 129-133 F5.2 mag Hmag H-band magnitude 135-139 F5.2 mag Kmag K-band magnitude 141-142 I2 --- Ncomp Number of components 144-144 I1 --- Gr Grade (3) 146-195 A50 --- Id Other identifiers -------------------------------------------------------------------------------- Note (1): The WDS index may differ from the index given in the Washington Double Stars Catalog for the same system. Note (2): Parallax code: HIP,HIP1,HIP2 - trigonometric Hipparcos Gaia - Gaia DR1 parallax DR2 - Gaia DR2 parallax DR3 - Gaia DR3 or eDR3 parallax DR3N - Gaia DR3+NSS parallax ptm - photometric parallax estimate dyn - dynamical from visual orbit orb - orbital for visual/SB2 orbit bib - taken from literature guess - crude guess Note (3): Grades have the following meaning 0 - no grade or secondary component 1 - not a triple system 2 - uncertain triple or very wide (period >2Myr) 3 - some undefined period or poorly known distance 4 - at least triple, all periods defined 5 - At least one orbit, distance known within 10% Note (4): Unknown numerical parameters have zero value in all tables. -------------------------------------------------------------------------------- Byte-by-byte Description of file: sys.tsv -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS(J2000) 12- 14 A3 --- Primary Primary component label 16- 18 A3 --- Secondary Secondary component label 20- 22 A3 --- Parent Parent label (1) 24- 31 A6 --- Type Observing technique/status (2) 33- 42 F10.4 n/a P Orbital period 44- 44 A1 --- Punit [kydM] unit of period 46- 53 F8.3 --- Sep Separation or semimajor axis 55 A1 --- Sunit ['"m] Units of separation 57- 61 F5.1 deg PA Position angle 63- 67 F5.2 mag Vmag1 V-magnitude of the primary 69- 73 A5 --- SP1 Spectral type of the primary 75- 79 F5.2 mag Vmag2 V-magnitude of the secondary 81- 85 A5 --- SP2 Spectral type of the secondary 87- 92 F6.2 solMass Mass1 Mass of the primary 94 A1 --- MCode1 Mass estimation code for primary (3) 96-101 F6.2 solMass Mass2 Mass of the secondary 103 A1 --- MCode2 Mass estimation code for secondary (3) 105-134 A20 --- Comment Comment -------------------------------------------------------------------------------- Note (1): The "Parent" points to a component identifier in a higher-level system to which the current system belongs and thus codes the hierarchy by reference. Two special symbols are used: * means root (system at the highest hierarchical level) t means "Trapezium"-type, apparently non-hierarchical Note (2): Discovery/observing status codes, comma-separated: c - wide, possibly C.P.M. system C - C.P.M. system (sep.>3"); The following small letters give the criteria used to establish CPM: h - physical according to hypothetical parallax, r - common radial velocities, p - photometric distances or common parallax; m - common proper motion. v - close visual or interferometric system (sep.<3") V - visual system with computed orbit a - astrometric system (perturbed motion suspected) A - astrometric orbit for invisible companion is computed s - possibly spectroscopic system (var. RV or composite sp.) S1, S2 - spectroscopic system with computed orbit, single- or double-lined o - occultation binary E - eclipsing binary with known period E* - eclipse time variation e - eclipsing binary, period not known X - optical or spurious (qualifiers h,r,m clarify why optical) Note (3): Mass codes: r - given in the original publication v - estimated from absolute V magnitude k - estimated from absolute K or H magnitude a - estimated from spectral type or B-V color index from Allen's tables s - sum of masses for the sub-system(s) q - estimated from primary mass and mass ratio of SB2 or astrometric m - minimum secondary mass for SB1 -------------------------------------------------------------------------------- Byte-by-byte Description of file: orb.tsv -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS(J2000) 12- 19 A7 --- System Primary,Secondary 21- 32 F12.4 --- Period Period (See Punit for the units) 34- 43 F10.4 --- T Periastron epoch (Besselian year or JD-2400000) 45- 50 F6.3 --- e Eccentricity 52- 59 F8.4 arcsec a Semimajor axis 61- 66 F6.2 deg Node P.A. of the ascending node 68- 73 F6.2 deg LongP Longitude of periastron 75- 80 F6.2 deg Incl Inclination 82- 87 F6.2 km/s K1 Primary semi-amplitude 89- 94 F6.2 km/s K2 Secondary semi-amplitude 96-103 F8.2 km/s V0 Center of mass velocity 105 A1 --- Nodeflag Component to which the node refers 107 A1 --- Punit [yd] Units of period 109-138 A30 --- Note Note (may include bibcode) -------------------------------------------------------------------------------- Byte-by-byte Description of file: notes.tsv -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS(J2000) 12- 91 A80 --- Rem Remark text 93-111 A19 --- Bib Bibcode or reference Acknowledgements: Andrei Tokovinin History: * 22-Mar-2017 First version posted * 07-Feb-2023 Previous update * 01-Jan-2024 Last update ================================================================================ (End)