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I/264          Sixth Catalogue of Fundamental Stars (FK6)        (Wielen+ 2000)

Sixth Catalogue of Fundamental Stars (FK6). Part I: Basic Fundamental Stars with Direct Solutions Sixth Catalogue of Fundamental Stars (FK6) , Parts I and III Wielen R., Schwan H., Dettbarn C., Lenhardt H., Jahreiss H., Jahrling R. <Veroeff. Astron. Rechen-Inst. Heidelberg 35, 1 (1999)> =1999VeARI..35....1W
Part III: Additional Fundamental Stars with Direct Solutions Wielen R., Schwan H., Dettbarn C., Lenhardt H., Jahreiss H., Jahrling R. Khalisi E. <Veroeff. Astron. Rechen-Inst. Heidelberg 37, 1 (2000)> =2000VeARI..37....1W ADC_Keywords: Positional data ; Proper motions ; Stars, fundamental Description: The FK6 is a suitable combination of the results of the HIPPARCOS (Cat. I/239) astrometry satellite with ground-based data, measured over more than two centuries. The FK6 gives other solutions than the classical `single-star mode' (SI mode), which take into account the fact that hidden astrometric binaries among `apparently single-stars' introduce sizable `cosmic errors' into the quasi-instantaneously measured HIPPARCOS proper motions and positions. The FK6 gives in addition to the SI mode the `long-term prediction (LTP) mode' and the `short-term prediction (STP) mode'. These LTP and STP modes are on average the most precise solutions for apparently single stars, depending on the epoch difference with respect to the HIPPARCOS epoch of about 1991. The FK6(I) results from the combination of FK5(I) (Cat. I/149) with Hipparcos results. Among its 878 stars, it contains 340 objects classified as `astrometrically excellent stars', most suited for high-precision astrometry. The typical mean error of an FK6(I) proper motion is 0.35 mas/year in the single-star mode (about two times better than Hipparcos), and 0.50 mas/year in the long-term prediction mode (about four times better than Hipparcos). The FK6(III) results from the combination of stars from FK5 extension (Cat. I/175) with Hipparcos. Among its 3272 stars, it contains 1928 objects classified as `astrometrically excellent stars'. The typical mean error of an FK6(III) proper motion is 0.59 mas/year in the single-star mode, and 0.93 mas/year in the long-term prediction mode. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file fk6_1.dat 842 878 FK6(I) File version 01 fk6_3.dat 483 3272 FK6(III) File version 01 notes1.dat 80 1310 Individual notes to FK6(I) stars tabnote3.dat 56 1144 `Tabular Notes' about Binarity in FK6(III) notes3.dat 80 56 Individual notes to FK6(III) stars
See also: http://www.ari.uni-heidelberg.de/fk6/ : The FK6 home page I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/149 : Fifth Fundamental Catalogue (FK5) Part I (Fricke+, 1988) I/175 : Fifth Fundamental Catalogue (FK5) - Extension (Fricke+ 1991) Byte-by-byte Description of file: fk6_1.dat
Bytes Format Units Label Explanations
2- 6 I5 --- FK6 FK6 number of the star (identical with its FK5 number) 10- 15 I6 --- HIP Hipparcos (I/239) number of the star 19- 37 A19 --- Name Name of the star 40- 41 I2 h RAh Right ascension (ICRS, Ep=J2000) (G1) 43- 44 I2 min RAm Right ascension (ICRS, Ep=J2000) (G1) 46- 54 F9.6 s RAs Right ascension (ICRS, Ep=J2000) (G1) 59 A1 --- DE- Declination sign (ICRS, Ep=J2000) (G1) 60- 61 I2 deg DEd Declination (ICRS, Ep=J2000) (G1) 63- 64 I2 arcmin DEm Declination (ICRS, Ep=J2000) (G1) 66- 73 F8.5 arcsec DEs Declination (ICRS, Ep=J2000) (G1) 77- 85 F9.2 mas/yr pmRA* Proper motion in right ascension (SI mode) (pmRA* = mu_alpha*cos(delta)) (G1) 89- 97 F9.2 mas/yr pmDE Proper motion in declination (G1) 100-106 F7.2 yr TRA Central epoch in RA of the star (SI mode) 111-115 F5.2 mas e_RA* rms uncertainty on alpha*cos(delta) at the central epoch TRA (SI mode) 120-124 F5.2 mas/yr e_pmRA* rms uncertainty on pmRA* (SI mode) 127-133 F7.2 yr TDE Central epoch in DE of the star (SI mode) 138-142 F5.2 mas e_DEs rms uncertainty on DE at the central epoch TDE (SI mode) 147-151 F5.2 mas/yr e_pmDE rms uncertainty on pm DE (SI mode) 155-160 F6.2 mas plx Resulting parallax of the star (G3) 165-169 F5.2 mas e_plx rms uncertainty on plx 174 A1 --- f_plx [HPC] Parallax origin, H=Hipparcos (G4) 179-184 F6.1 km/s RV Radial velocity, used in calculating the foreshortening effect 189-193 F5.2 mag Vmag Apparent visual magnitude of the star (taken from the HIPPARCOS Catalogue) 198 I1 --- f_Vmag [1/3]? Variability flag, from Hipparcos (G5) 204-205 I2 --- Kbin1 Double-star nature of the object flag (G6) 211 I1 --- Kbin2 ? Double-star nature from pm differences (G7) 217 I1 --- Kae ? Astrometrically excellent star flag (G8) 222-229 F8.2 mas DRA*LTP Difference in alpha*cos(delta) between long-term prediction (LTP) and SI modes 233-240 F8.2 mas DRA*STP Difference in alpha*cos(delta) between short-term prediction (STP) and SI modes 244-251 F8.2 mas DRA*HIP Difference in alpha*cos(delta) between HIP and SI modes 255-262 F8.2 mas DRA*FK5 Difference in alpha*cos(delta) between FK5 and SI modes 266-273 F8.2 mas DDE:LTP Difference in declination between long-term prediction (LTP) and SI modes 277-284 F8.2 mas DDE:STP Difference in declination between short-term prediction (STP) and SI modes 288-295 F8.2 mas DDE:HIP Difference in declination between HIP and SI modes 299-306 F8.2 mas DDE:FK5 Difference in declination between FK5 and SI modes 310-317 F8.2 mas/yr DpmRA*LTP Difference in proper motion in RA between long-term prediction (LTP) and SI modes 321-328 F8.2 mas/yr DpmRA*STP Difference in proper motion in RA between short-term prediction (STP) and SI modes 332-339 F8.2 mas/yr DpmRA*HIP Difference in proper motion in RA between HIP and SI modes 343-350 F8.2 mas/yr DpmRA*FK5 Difference in proper motion in RA between FK5 and SI modes 354-361 F8.2 mas/yr DpmRA*mu0 Difference in proper motion in RA between mu0 (HIP-FK5) and SI modes 365-372 F8.2 mas/yr DpmDE:LTP Difference in proper motion in DE between long-term prediction (LTP) and SI modes 376-383 F8.2 mas/yr DpmDE:STP Difference in proper motion in DE between short-term prediction (STP) and SI modes 387-394 F8.2 mas/yr DpmDE:HIP Difference in proper motion in DE between HIP and SI modes 398-405 F8.2 mas/yr DpmDE:FK5 Difference in proper motion in DE between FK5 and SI modes 409-416 F8.2 mas/yr DpmDE:mu0 Difference in proper motion in DE between mu0 and SI modes 419-425 F7.2 yr TRALTP RA central epoch in LTP solution 428-434 F7.2 yr TRASTP RA central epoch in STP solution 437-443 F7.2 yr TRAHIP RA central epoch in HIP solution 446-452 F7.2 yr TRAFK5 RA central epoch in FK5 solution 457-461 F5.2 mas e_RA*LTP rms uncertainty on RA at central epoch TRA in long-term prediction (LTP) solution 466-470 F5.2 mas e_RA*STP rms uncertainty on RA at central epoch TRA in short-term prediction (STP) solution 475-479 F5.2 mas e_RA*HIP rms uncertainty on RA at central epoch TRA in HIP solution 484-488 F5.2 mas e_RA*FK5 rms uncertainty on RA at central epoch TRA in FK5 solution 493-497 F5.2 mas/yr e_pmRA*LTP rms uncertainty on pmRA* in LTP solution 502-506 F5.2 mas/yr e_pmRA*STP rms uncertainty on pmRA* in STP solution 511-515 F5.2 mas/yr e_pmRA*HIP rms uncertainty on pmRA* in HIP solution 520-524 F5.2 mas/yr e_pmRA*FK5 rms uncertainty on pmRA* in FK5 solution 529-533 F5.2 mas/yr e_pmRA*mu0 rms uncertainty on pmRA* in mu0 solution 536-542 F7.2 yr TDELTP DE central epoch in LTP solution 545-551 F7.2 yr TDESTP DE central epoch in LTP solution 554-560 F7.2 yr TDEHIP DE central epoch in HIP solution 563-569 F7.2 yr TDEFK5 DE central epoch in FK5 solution 574-578 F5.2 mas e_DE:LTP rms uncertainty on DE at central epoch TDE in long-term prediction (LTP) solution 583-587 F5.2 mas e_DE:STP rms uncertainty on DE at central epoch TDE in Short-term prediction (STP) solution 592-596 F5.2 mas e_DE:HIP rms uncertainty on DE at central epoch TDE in HIP solution 601-605 F5.2 mas e_DE:FK5 rms uncertainty on DE at central epoch TDE in FK5 solution 610-614 F5.2 mas/yr e_pmDE:LTP rms uncertainty on pmDE in LTP solution 619-623 F5.2 mas/yr e_pmDE:STP rms uncertainty on pmDE in STP solution 628-632 F5.2 mas/yr e_pmDE:HIP rms uncertainty on pmDE in HIP solution 637-641 F5.2 mas/yr e_pmDE:FK5 rms uncertainty on pmDE in FK5 solution 646-650 F5.2 mas/yr e_pmDE:mu0 rms uncertainty on pmDE in mu0 solution 654-659 F6.2 mas plxSI Parallax derived in the SI mode 663-668 F6.2 mas plxSTP Parallax derived in the STP mode 672-677 F6.2 mas plxHIP Parallax from HIP 683-686 F4.2 mas e_plxSI rms uncertainty on plxSI 692-695 F4.2 mas e_plxSTP rms uncertainty on plxSTP 701-704 F4.2 mas e_plxHIP rms uncertainty on plxHIP 708-715 F8.2 mas DRAsys FK5-HIP difference in alpha*cos(delta) (9) 719-726 F8.2 mas DDEsys FK5-HIP difference in declination (9) 727 A1 --- --- [.] (the dot exists in 12 records) 730-737 F8.2 mas/yr DpmRA*sys FK5-HIP difference in pm_RA*cos(DE) (9) 741-748 F8.2 mas/yr DpmDE:sys FK5-HIP difference in pmDE (9) 755-759 F5.2 mas e_RA*sys rms uncertainty on RA*sys 766-770 F5.2 mas e_DE:sys rms uncertainty on DE:sys 778-781 F4.2 mas/yr e_pmRA*sys rms uncertainty on pmRA*sys 789-792 F4.2 mas/yr e_pmDE:sys rms uncertainty on pmDE:sys 797 I1 --- Ksys ? FK5/HIP systematic differences flag (10) 803-807 F5.2 --- FFH F parameter based on FK5/HIP data (G11) 812-816 F5.2 --- F0H F parameter based on FK5/HIP data (G11) 821-825 F5.2 --- F0(GC)H ? F parameter based on GC/HIP data (G11) 830-834 F5.2 --- F0F F parameter based on Fk5/HIP data (G11) 838-840 I3 --- Note ? Number of the note in notes1.dat file 842 A1 --- --- [|]
Note (9): Systematic differences between the FK5 system and ICRS/HIPPARCOS system (in the sense FK5-HIP), for the star under consideration at the epoch J1949.4 . The differences have to be subtracted from the FK5 data at epoch J1949.4 in order to obtain the FK5 quantities at epoch J1949.4 in the HIPPARCOS reference system. The systematic differences given include both the rotational and regional systematic differences between the FK5 system and the HIPPARCOS system. The mean errors of the systematic differences at epoch J1949.4 are given. Note (10): Flag for the use of the star in determining the systematic differences between the FK5 system and the HIPPARCOS system in position and proper motion: 1 = used for positions and proper motions blank = not used
Byte-by-byte Description of file: fk6_3.dat
Bytes Format Units Label Explanations
2- 6 I5 --- FK6 FK6 number of the star (identical with its FK5 number) 10- 15 I6 --- HIP Hipparcos (I/239) number of the star 19- 20 A2 --- Flag Flag for the subsample of FK6(III) stars (1) 24- 42 A19 --- Name Name of the star 45- 46 I2 h RAh Right ascension (ICRS, Ep=J2000) (G1) 48- 49 I2 min RAm Right ascension (ICRS, Ep=J2000) (G1) 51- 59 F9.6 s RAs Right ascension (ICRS, Ep=J2000) (G1) 64 A1 --- DE- Declination sign (ICRS, Ep=J2000) (G1) 65- 66 I2 deg DEd Declination (ICRS, Ep=J2000) (G1) 68- 69 I2 arcmin DEm Declination (ICRS, Ep=J2000) (G1) 71- 78 F8.5 arcsec DEs Declination (ICRS, Ep=J2000) (G1) 82- 90 F9.2 mas/yr pmRA* Proper motion in right ascension (pmRA* = mu_alpha*cos(delta)) (G1) 94-102 F9.2 mas/yr pmDE Proper motion in declination (G1) 105-111 F7.2 yr TRA Central epoch in RA of the star (SI mode) 117-120 F4.2 mas e_RA* rms uncertainty on alpha*cos(delta) at the central epoch TRA (SI mode) 126-129 F4.2 mas/yr e_pmRA* rms uncertainty on pmRA* (SI mode) 132-138 F7.2 yr TDE Central epoch in DE of the star (SI mode) 144-147 F4.2 mas e_DEs rms uncertainty on DE at the central epoch TDE (SI mode) 153-156 F4.2 mas/yr e_pmDE rms uncertainty on pmDE (SI mode) 161-165 F5.1 mas plx Resulting parallax of the star (G3) 171-174 F4.2 mas e_plx rms uncertainty on plx 179 A1 --- f_plx [HP] Parallax origin, H=Hipparcos (G4) 184-191 F8.1 km/s RV ? Radial velocity, used in calculating the foreshortening effect 196-199 F4.2 mag Vmag Apparent visual magnitude of the star (taken from the HIPPARCOS Catalogue) 205 I1 --- f_Vmag [1/3]? Variability flag, from Hipparcos (G5) 211-212 I2 --- Kbin1 Double-star nature of the object flag (G6) 218 I1 --- Kbin2 ? Double-star nature from pm differences (G7) 224 I1 --- Kae ? Astrometrically excellent star flag (G8) 229-236 F8.2 mas/yr DpmRA*LTP Difference in proper motion in RA between long-term prediction (LTP) and SI mode 240-247 F8.2 mas/yr DpmRA*STP Difference in proper motion in RA between short-term prediction (STP) and SI mode 251-258 F8.2 mas/yr DpmRA*HIP Difference in proper motion in RA between HIP and SI mode 262-269 F8.2 mas/yr DpmRA*FK5 Difference in proper motion in RA between FK5 and SI mode 273-280 F8.2 mas/yr DpmRA*mu0 Difference in proper motion in RA between mu0 and SI mode 284-291 F8.2 mas/yr DpmDE:LTP Difference in proper motion in DE between long-term prediction (LTP) and SI mode 295-302 F8.2 mas/yr DpmDE:STP Difference in proper motion in DE between short-term prediction (STP) and SI mode 306-313 F8.2 mas/yr DpmDE:HIP Difference in proper motion in DE between HIP and SI mode 317-324 F8.2 mas/yr DpmDE:FK5 Difference in proper motion in DE between FK5 and SI mode 328-335 F8.2 mas/yr DpmDE:mu0 Difference in proper motion in DE between mu0 and SI mode 339-343 F5.2 mas/yr e_DpmRA*LTP rms uncertainty on DpmRA*LTP 348-352 F5.2 mas/yr e_DpmRA*STP rms uncertainty on DpmRA*STP 357-361 F5.2 mas/yr e_DpmRA*HIP rms uncertainty on DpmRA*HIP 366-370 F5.2 mas/yr e_DpmRA*FK5 rms uncertainty on DpmRA*FK5 375-379 F5.2 mas/yr e_DpmRA*mu0 rms uncertainty on DpmRA*mu0 384-388 F5.2 mas/yr e_DpmDE:LTP rms uncertainty on DpmDELTP 393-397 F5.2 mas/yr e_DpmDE:STP rms uncertainty on DpmDESTP 402-406 F5.2 mas/yr e_DpmDE:HIP rms uncertainty on DpmDEHIP 411-415 F5.2 mas/yr e_DpmDE:FK5 rms uncertainty on DpmDEFK5 420-424 F5.2 mas/yr e_DpmDE:mu0 rms uncertainty on DpmDEmu0 429-433 F5.2 --- FFH F parameter based on FK5/HIP data (G11) 438-442 F5.2 --- F0H F parameter based on FK5/HIP data (G11) 447-451 F5.2 --- F0(GC)H ? F parameter based on GC/HIP data (G11) 457-460 F4.2 --- F0F F parameter based on Fk5/HIP data (G11) 465-469 F5.2 --- FTH ? F parameter based on TYCHO2/HIP (12) 475 A1 --- tNote [t] indicates a note in tabnote3.dat 477-480 I4 --- Note ? Number of the note in file notes3.dat 483 A1 --- --- [|]
Note (1): Flag for the subsample of FK6(III) stars: BX = star from the bright extension of the FK5 FX = star from the faint extension of the FK5 RS = star from the RSup (Schwan et al., 1993, Cat. I/210). Note (12): F parameter based on the difference Deltamu{TH} = muT - muH between the proper motion muT given in TYCHO2 Catalogue (Hoeg et al., 2000, Cat. I/259) and the proper motion muH given by HIPPARCOS.
Byte-by-byte Description of file: notes1.dat notes3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Note [1/3024]=+ Number of the note 6- 80 A75 --- Text Text of the note (1)
Note (1): Abbreviations for flags: optical companion because of: af = approximately fixed nc = no common proper motion hv = high relative velocity pc = large separation in pc other flags: no = no relative position given oo = only one observation given in CCDM or WDS (hence no relative proper motion available)
Byte-by-byte Description of file: tabnote3.dat
Bytes Format Units Label Explanations
3- 6 I4 --- FK6 FK6 number 10- 15 I6 --- HIP HIPPARCOS (Cat. I/239) number 20 A1 --- H *[sdt.] HIPPARCOS indicators for suspected binarity 23 I1 % U *HIPPARCOS percentage of rejected data 24 I1 --- F *? HIPPARCOS goodness-of-fit parameter 27 A1 --- K *[bun.] Binarity from speckle observations 28 A1 --- C *[ctwr.] Existence of a companion at large distance 31 A1 --- G *[vu2bd.] Binarity from Wilson's GCRV <III/21> 32 A1 --- B *[vu2bd.] Binarity from Bright Star Cat. <V/50> 33 A1 --- S *[vu2bd.] Binarity from 'oRV' data in SIMBAD (CDS) 34 A1 --- T *[bu.] Binarity from 'MK' data in SIMBAD (CDS) 37 A1 --- A *[vu2db.] Binarity from Barbier-Brossat+ <III/184> 38 A1 --- M *[vu2dbf.] Binarity from Malaroda+ <III/216> 39 A1 --- L *[vu2dbc.] Binarity from additional radial velocities 42 A1 --- V *[abew.] Binarity from photometric variability. 43 A1 --- P *[csb.] 44 A1 --- I [i.] individual note is given in file notes3.dat 50- 53 I4 --- Note ?Individual note in notes3.dat file 56 A1 --- --- [|]
Note on H: HIP indicators for a suspected visual binary: s = Flag S in HIP Field H61. d = Flag D in HIP Field H52, based on photometry. This could be an indication of duplicity. t = HIP Flags S and D (t = s+d). Note on U: HIP percentage of rejected data (HIP Field H29 (F1)). one digit only (less than 10%) A high percentage of rejected data may be caused by a duplicity of the object, but other reasons cannot be excluded. Note on F: HIPPARCOS goodness-of-fit parameter (HIP Field H30, F2) - F2 < 0 0 0 ≤ F2 < 1 1 1 ≤ F2 < 2 2 2 ≤ F2 < 3 3 3 ≤ F2 < 4 etc. A large value of F2 (e.g. larger than 3) may be caused by a duplicity of the object, but other reasons cannot be excluded. Note on K: Indications on binarity from the catalogue of speckle observations (Hartkopf et al., 1999AJ....118..509H). b = binary resolved by speckle (or other interferometric) observations (such objects are generally excluded from the FK6(III)) u = possibly resolved n = object observed, but not resolved (i.e. not hint to binarity) Note on C: Indicator for a star which has one (or more) visual component(s) with a separation ρ of at least 60". Source of information: c = CCDM (Dommanget and Nys, 1994, Cat. I/211) t = TYCHO2 (Hoeg et al., 2000, Cat. I/259) w = WDS (Worley and Douglass, 1997 (Cat. I/237), and updated versions under the given URL) r = other sources Visual binaries with ρ<60" are generally excluded from the FK6(III). Note on G, B, S, A, M, L: Binarity from radial velocities. v = radial velocity is variable u = radial velocity may be variable 2 = variable radial velocities for two stellar components b = (other) indications of binarity d = (other) indications of binarity are doubtful Remarks about the binarity flag: f = probably erroneous indication on binarity. c = radial velocity is probably constant. Note on T: Indication of binarity from spectral classification: b = binary u = possibly a binary Note on V: Indication of binarity from photometric variability a = eclipsing binary, Algol type b = eclipsing binary, beta Lyrae type e = eclipsing binary, type uncertain w = eclipsing binary, W Ursae Majoris type Note on P: Indication for a variability of the radial velocity Vrad due to stellar pulsation (which may be confused with a variability of Vrad due to spectroscopic binarity). c = Cepheid s = delta Scuti star b = beta Cephei star
Global notes: Note (G1): The positions and proper motions are given at epoch and equinox J2000.0 in the ICRS/HIPPARCOS system, for the single-star (SI) mode of the FK6. Note (G3): This is either the HIPPARCOS parallax or a photometric/spectroscopic parallax Note (G4): Source for parallax: H = HIPPARCOS Catalogue (ESA 1997, Cat. I/239) P = Newly determined photometric/spectroscopic parallax C = Not explicited Note (G5): Variability of the brightness of the star: blank = star not variable 1 = star variable at the level of < 0.06 mag 2 = star variable at the level of 0.06 - 0.6 mag 3 = star variable at the level of > 0.6 mag Note (G6): Flag for the double-star nature of the object: Kbin = d1d2 = 10d1+d2 First digit d1 is based on the proper-motion differences Δµ: The method and the meaning of the corresponding test parameters F are explained in Wielen et al. (1999A&A...346..675W) 1 = all values of F (F_FH, F_0H, F_0(GC)H, F_0F) are below 2.49 2 = at least one value of F (F_FH, F_0H, F_0(GC)H, F_0F) is larger than 3.44 3 = all other (intermediate) cases Second digit d2 is based in other indicators: if the data indicate various kinds of binarity, the `astrometrically most disturbing' effect is given, as: 1 = single star indicated 2 = the star is a member of a visual binary (gravitationally bound system), or the object is resolved by speckle interferometry 3 = the object is suspected to be a visual binary (mainly due to HIPPARCOS) 4 = the star has at least one optical companion with a separation of ρ<60" 5 = the star has at least one optical companion, but all companions have a separation of ρ ≥ 60" 6 = astrometric binary (mainly the non-standard solutions O, G, V, X of HIPPARCOS) 7 = spectroscopic binary with a known orbit, or the star is an eclipsing binary 8 = the radial velocity of the star is variable (indicating a spectroscopic binary), or the object shows a composite spectrum (indicating a double star) 9 = the radial velocity of the star may be variable (possible indication for a spectroscopic binary), or the object may show a composite spectrum (possibly indicating a double star), or other weak indications of binarity, or the star has a (suspected) planetary companion. Note (G7): Flag for the double-star nature of the object based on differences between various proper motions (Wielen et al., 1999A&A...346..675W): 1 = single-star candidate 2 = Δµ binary blank = uncertain (between 1 and 2), or the binary nature which is indicated by other data does not allow to classify the object as a single-star candidate Note (G8): Flag for 'astrometrically excellent stars': 3 = astrometrically excellent star with rank *** (the very best) 2 = astrometrically excellent star with rank ** 1 = astrometrically excellent star with rank * blank = star not classified as astrometrically excellent Note (G11): These fields contain the test parameters F for various proper-motion differences Δµ. The parameter F is defined by Eq.(23) of Wielen et al. (1999A&A...346..675W). It is essentially the ratio between the two-dimensional difference Δµ and its mean error. Values of F>3.44 indicate Δµ binaries. If all the F values are below 2.49, the star may be classified as a single-star candidate. FFH: F parameter based on the difference ΔµFHFH between the proper motions given by the FK5 and by HIPPARCOS. F0H: F parameter based on the difference Δµ0H0H between the proper motion µ0 (based on the stellar positions in the FK5 and in the HIPPARCOS Catalogue) and the proper motion muH given by HIPPARCOS. F0GCH: F parameter based on the difference Δµ0(GC)H0(GC)H between the proper motion µ0 (based on the stellar positions in the GC (Boss et al., 1937, Cat. I/113) and in the HIPPARCOS Catalogue) and the proper motion µH given by HIPPARCOS. F0F: F parameter based on the difference Δµ0F0F between the proper motion µ0 (based on the stellar positions in the FK5 and in the HIPPARCOS Catalogue) and the proper motion µF given by the FK5.
Acknowledgements: Christian Dettbarn References: Wielen et al., 1999A&A...346..675W Wielen et al., 1999A&A...347.1046W Wielen et al., 2001A&A...368..298W
(End) Francois Ochsenbein [CDS] 01-Mar-2002
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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