Access to Astronomical Catalogues

← Click to display the menu
I/280B   All-Sky Compiled Catalogue of 2.5 million stars  (Kharchenko+ 2009)

All-Sky Compiled Catalogue of 2.5 million stars (ASCC-2.5, 3rd version) Kharchenko N.V., Roeser S. <Kinematics and Physics of Celestial Bodies. 17, 409 (2001)> =2001KFNT...17e.409K
ADC_Keywords: Combined data; Positional data; Proper motions; Parallaxes, trigonometric; Photometry; Spectral types; Stars, variable; Stars, double and multiple; Cross identifications Description: The All-Sky Compiled Catalogue of 2501313 stars (ASCC-2.5) with the limiting magnitude V=12-14 is a result of a merging of star lists from present day large high-precision catalogues from space (Hipparcos- Tycho family catalogues: Hipparcos main catalogue including Multiple System Annex [I/239], Tycho-1 [I/239], Tycho-2 [I/259], ACT-RC [I/246], TRC [I/250]) and ground-based (PPM-N [I/146], PPM-S [I/193], PPM-add [I/208], CMC11 [I/256]) observations and reduction to standard systems of corresponding stellar data. The data from the Tycho-2 Spectral Type Catalog [III/231], and the 2MASS All-Sky Catalog of Point Sources [II/246] are added. The basic stellar data presented in the ASCC-2.5 are the equatorial coordinates (J2000, epoch 1991.25), proper motions in the Hipparcos system, B and/or V stellar magnitudes in the Johnson system. Additionally, for some stars we give trigonometric parallaxes, spectral classes in the MK or HD system, multiplicity and variability flags, Hipparcos, Tycho-2, HD, DM designations. Equatorial coordinates and their standard errors were taken from the source catalogues in accordance with the priority: Hipparcos [I/239/hip_main], Tycho-2 [I/259], Tycho-1 [I/239/tyc_main], CMC11 [I/256], PPM [I/146,I/193,I/208]. Proper motions from the source catalogues were compared with Hipparcos data.The compiled proper motions in the Hipparcos system and their standard errors were computed as the weighted means. The weights were set in accordance with the proper motion errors listed for individual stars in the source catalogues. Trigonometric parallaxes are taken from the Hipparcos and Tycho-1 catalogues. Stellar B, V magnitudes were determined on the basis of the ground- based photometric data taken from CMC11, Hipparcos, as well as space BT, VT from Tycho-1, Tycho-2. Magnitudes from the PPM catalogue were used if no other photometric data were available. Tycho data were transformed to the Johnson system via: V = VT - 0.09 (B-V)T + dV, (B-V) = 0.850 (B-V)T + d(B-V), i.e. using the recommendations from the Introduction to the Tycho catalogue and including additional corrections dV and d(B-V). These additional corrections were determined by comparison with ground-based data in the Johnson system. These corrections depend non-linearly on colour and reach 0.02 and 0.04 mag, respectively. Infrared stellar magnitudes J, H, Ks and their errors were copied from the 2MASS catalogue. Spectral classes in the MK or HD systems were taken from Hipparcos, CMC11, PPM, and Tycho-2 Spectral Type catalogues. Multiplicity and variability flags were taken from Tycho-1, Tycho-2, Hipparcos, CMC11, and PPM catalogues. The 1st version of the ASCC-2.5 contained some errors in the zones -1 to +1 degree which have been corrected (see details in the "History" section below). The 2nd version included a new file (ccadd.dat) containing the previously missing stars (including components of multiple systems). Note that the ASCC numbers did not change between the two versions, but additional numbers (2600001 to 2603318) were assigned. In the present 3rd version of the ASCC-2.5 the stars from file ccadd.dat are inserted in the basic files in accordance with their coordinates. Stars in the ASCC-2.5 are divided into 30 files ordered by declination (North and South polar caps and 28 bands of 5 degrees width), then sorted in order of right ascension within each file. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file ccp70.dat 210 66455 Declination from +70.0 to +90.0 ccp65.dat 210 34036 Declination from +65.0 to +69.99999999 ccp60.dat 210 53853 Declination from +60.0 to +64.99999999 ccp55.dat 210 71473 Declination from +55.0 to +59.99999999 ccp50.dat 210 71054 Declination from +50.0 to +54.99999999 ccp45.dat 210 75896 Declination from +45.0 to +49.99999999 ccp40.dat 210 80855 Declination from +40.0 to +44.99999999 ccp35.dat 210 95204 Declination from +35.0 to +39.99999999 ccp30.dat 210 99125 Declination from +30.0 to +34.99999999 ccp25.dat 210 92233 Declination from +25.0 to +29.99999999 ccp20.dat 210 89927 Declination from +20.0 to +24.99999999 ccp15.dat 210 83973 Declination from +15.0 to +19.99999999 ccp10.dat 210 87285 Declination from +10.0 to +14.99999999 ccp05.dat 210 92968 Declination from +05.0 to +09.99999999 ccp00.dat 210 88324 Declination from +00.0 to +04.99999999 ccm00.dat 210 79059 Declination from -00.0 to -04.99999999 ccm05.dat 210 80228 Declination from -05.0 to -09.99999999 ccm10.dat 210 84242 Declination from -10.0 to -14.99999999 ccm15.dat 210 92146 Declination from -15.0 to -19.99999999 ccm20.dat 210 96530 Declination from -20.0 to -24.99999999 ccm25.dat 210 97266 Declination from -25.0 to -29.99999999 ccm30.dat 210 97367 Declination from -30.0 to -34.99999999 ccm35.dat 210 94279 Declination from -35.0 to -39.99999999 ccm40.dat 210 97934 Declination from -40.0 to -44.99999999 ccm45.dat 210 98339 Declination from -45.0 to -49.99999999 ccm50.dat 210 95810 Declination from -50.0 to -54.99999999 ccm55.dat 210 94963 Declination from -55.0 to -59.99999999 ccm60.dat 210 80770 Declination from -60.0 to -64.99999999 ccm65.dat 210 57389 Declination from -65.0 to -69.99999999 ccm70.dat 210 72330 Declination from -70.0 to -90.0
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) I/259 : The Tycho-2 Catalogue (Hog+ 2000) I/246 : The ACT Reference Catalog (Urban+ 1997) I/250 : The Tycho Reference Catalogue (Hog+ 1998) I/146 : Positions and Proper Motions - North (Roeser+, 1988) I/193 : Positions and Proper Motions - South (Bastian+ 1993) I/208 : The 90000 stars Supplement to the PPM Catalogue (Roeser+, 1994) I/256 : Carlsberg Meridian Catalogs (CMC, 1999) III/231 : The Tycho-2 Spectral Type Catalog (Wright+, 2003) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) Byte-by-byte Description of file: cc*.dat
Bytes Format Units Label Explanations
1- 12 F12.9 h RAhour Right Ascension J2000.0, epoch 1991.25 14- 25 F12.8 deg DEdeg Declination J2000.0, epoch 1991.25 27- 30 I4 0.1mas e_RAhour Standard error in RA*cos(DEdeg) 32- 35 I4 0.1mas e_DEdeg Standard error in DEdeg 37- 42 I6 0.01mas Plx *?=999999 Trigonometric parallax 44- 48 I5 0.01mas e_Plx *?=99999 Standard error in Plx 50- 56 I7 0.01mas/yr pmRA Proper Motion in RA*cos(DE) 58- 64 I7 0.01mas/yr pmDE Proper Motion in Declination 66- 70 I5 0.01mas/yr e_pmRA Standard error in pmRA 72- 76 I5 0.01mas/yr e_pmDE Standard error in pmDE 78- 82 I5 mmag Bmag *?=99999 B magnitude in Johnson system 84- 88 I5 mmag Vmag *?=99999 V magnitude in Johnson system 90- 93 I4 mmag e_Bmag *?=9999 Standard error on Bmag 95- 98 I4 mmag e_Vmag *?=9999 Standard error on Vmag 100-103 I4 mmag Scat *?=9999 Scatter on VT or Hp mag 105 A1 --- v1 *[GN ] Known variability from GCVS/NSV 106 A1 --- v2 *[UVW ] Variability from Tycho-1 107 A1 --- v3 *[CDMPRU ] Variability type 108 A1 --- v4 *[VYIXR ] Variability from CMC11 109-110 A2 --- d12 *[A-S ] CCDM component identifier 111 A1 --- d3 *[A-S ] Component identifier 112 A1 --- d4 *[DRSYZ ] Duplicity from Tycho-1 113 A1 --- d5 *[CGOVX ] Double/Multiple Systems flag 114 A1 --- d6 *[D ] Duplicity flag from PPM 116-135 A20 --- SpType *Spectral type in MK or HD system 137-140 I4 --- TYC1 *?=0 TYC1 number from Tycho-2 141-145 I5 --- TYC2 *?=0 TYC2 number from Tycho-2 146 I1 --- TYC3 *?=0 TYC3 number from Tycho-2 148-153 I6 --- HIP *?=0 Hipparcos number 155-160 I6 --- HD *?=0 HD number 162-169 I8 --- DM *?=0 DM number 171-177 I7 --- ASCC *[1,2603318] ASCC-2.5 number 179-183 I5 mmag Jmag *?=99999 J magnitude from 2MASS 185-188 I4 mmag e_Jmag *?=9999 Standard error on J magnitude 190-194 I5 mmag Hmag *?=99999 H magnitude from 2MASS 196-199 I4 mmag e_Hmag *?=9999 Standard error on H magnitude 201-205 I5 mmag Kmag *?=99999 K_s magnitude from 2MASS 207-210 I4 mmag e_Kmag *?=9999 Standard error on K_s magnitude
Note on Plx: Substituted with 999999 if no data Note on e_Plx: Substituted with 99999 if no data Note on Bmag, Vmag, Jmag, Hmag, Kmag: Substituted with 99999 if no data Note on e_Bmag, e_Vmag, Scat, e_Jmag, e_Hmag, e_Kmag: Substituted with 9999 if no data Note on v1: Byte 292 from Tycho-1 file tyc_main.dat This flag is set when the variability is known: G = variable known in General Catalog of Variable Stars N = variable known in New Suspected Variables catalog Substituted with blank if no data Note on v2: Byte 294 from Tycho-1 file tyc_main.dat This flag has the following meaning: U = apparent variability in the Tycho data; may be due to duplicity V = strong evidence of intrinsic variability W = suspected intrinsic variability Substituted with blank if no data Note on v3: Byte 322 from Hipparcos file hip_main.dat Hipparcos-defined type of variability (a blank entry signifies that the entry could not be classified as variable or constant): C = no variability detected ("constant") D = duplicity-induced variability M = possibly micro-variable (amplitude < 0.03mag) P = periodic variable R = V-I colour index was revised due to variability analysis U = unsolved variable which does not fall in the other categories Substituted with blank if no data Note on v4: Flag from CMC11 catalogue V = variable star Y or I = if the CAMC did not measure the mag, an approximate value from other sources is given to a precision of 0.1 mag X or R = star fainter than 12 with unknown mag is given as 12. Substituted with blank if no data Note on d12: Bytes 149, 150 from Tycho-2 file catalog.dat. The CCDM component identifiers for double or multiple Hipparcos stars contributing to this Tycho-2 entry. Substituted with blank if no data Tycho-2 byte 151 with the third component is not included. This byte contains data (equal to "C") for two stars of the ASCC-2.5 No 244181 (ccp50.dat) and No 339869 (ccp45.dat) only. Note on d3: Byte 41 from Hipparcos file hipdmcom.dat Substituted with blank if no data Note on d4: Byte 296 from Tycho-1 file tyc_main.dat Unresolved duplicity status from Tycho data analysis: D = duplicity clearly indicated (B_Tmag and V_Tmag refer to combined light) R = duplicity weakly indicated, combined with indication of variability S = duplicity suspected Y = investigation for duplicity carried out on Tycho data, no indication of duplicity was found Z = investigation for duplicity not carried out blank = Hipparcos star not observed by Tycho Substituted with blank if no data Note on d5: Byte 347 from Hipparcos file hip_main.dat Indicates that further details are given in the Hipparcos Double and Multiple Systems Annex: C = solutions for the components G = acceleration or higher order terms O = orbital solutions V = variability-induced movers (apparent motion arises from variability) X = stochastic solution (probably astrometric binaries with short period) Substituted with blank if no data Note on d6: Some multiple stars are not resolved in the PPM and/or CMC11 catalogues into separate components and are given in these catalogues as single stars with a flag "D". Sometimes (especially at large PM) such stars were not identified with resolved components from other catalogues, and are present in the ASCC as additional (false) component. Substituted with blank if no data Note on SpType: Substituted with blank if no data Note on TYC1, TYC2, TYC3, HIP, HD: Substituted with 0 if no data Note on DM: DM = Zone sign and abs(Zone)*100000 + running number within this Zone Substituted with 0 if no data Note on ASCC: Stars are numbered from 1 to 2501977 (as in the first version, in agreement with the file order indicated in the File Summary) and from 2600001 to 2603318 (new stars in the 2nd version).
History: * 21-Aug-2002 (date of the first release) * 18-Jun-2003: Version 'A' The 1st version of the ASCC-2.5 (21-Aug-2002) contains some errors: - 3982 false stars were detected at Dec = 0 ... +1 degrees. In the 2nd version of the ASCC-2.5 these stars were excluded from the file ccp00.dat. The corrected file ccp00.dat supersedes the previous file ccp00.dat and contains 88230 stars. - for 3948 stars at Dec = 0 ... -1 degrees the PPM data were missed during the catalogue compilation. In the 2nd version the missed data were added and corresponding stellar data were recompiled. The corrected file ccm00.dat supersedes the previous file ccm00.dat and contains the same number of stars. - 34 stars with PPM-only data were missed in zone Dec = 0 ... -1. They were included in a new file of additional catalogue objects ccadd.dat. Besides, 3284 components of multiple systems from all over the sky were included in the catalogue. These stars and their compiled stellar data are placed in the file ccadd.dat of version 'A'. * 12-Aug-2009: Version 'B' Stars from file ccadd.dat are placed into the basic files in accordance of their declinations. The spectral types from The Tycho-2 Spectral Type Catalog were added. The cross-correlation with the 2MASS catalogue was carried out and stellar magnitudes J, H, Ks were added. References: Bastian U., Roeser S., 1993, "PPM Star Catalogue, 3, 4", Spectrum Akademischer Verlag, Heidelberg (PPM-S) (Cat. I/193) Carlsberg Meridian Catalogue La Palma Numbers 1 to 11, "Observations of positions of stars and planets: May 1984 to May 1998", 1999, Copenhagen University Observatory, Royal Greenwich Observatory and Real Instituto y Observatorio de la Armada en San Fernando, CD-ROM distribution (CMC11) (Cat. I/256) ESA, 1997, "The Hipparcos and Tycho Catalogues", ESA SP-1200, 17 (Hipparcos: files I/239/hip_main.dat and I/239/hipdmcom.dat), (Tycho-1: file I/239/tyc_main.dat) Hog E., Kuzmin A., Bastian U., et al., 1998, "The Tycho Reference Catalogue", AA, 335, N 3, L65-L68 (TRC) (Cat. I/250) Hog E., Fabricius C., Makarov V.V., Urban S.E., Corbin T.E., Wycoff G.L., Bastian U., Schwekendiek P., Wicenec A, 2000, "The Tycho-2 Catalogue: Positions, proper motions and two-color photometry of the 2.5 million brightest stars", Copenhagen, CD-ROM distribution (Tycho-2) (Cat. I/259) Kharchenko N.V., 2001, "All-sky Compiled Catalogue of 2.5 million stars", Kinematics and Physics of Celestial Bodies, 17, N 5, 409-423 (ASCC-2.5) (Cat.I/280) Roeser S., Bastian U., 1991, "PPM Star Catalogue, 1, 2", Spectrum Akademischer Verlag, Heidelberg, Berlin, New York (PPM-N) (Cat. I/146) Roeser S., Bastian U., Kuzmin A., 1994, "The 90000 stars supplement to PPM", AApSS, 105, N 2, 301-303 (PPM-add) (Cat. I/208) Skrutskie M.F., Cutri R.M., Stiening M.D. et al., 2006, "The Two Micron All-Sky Survey (2MASS)", AJ, 131, 1163 (Cat. II/246) Urban S.E., Corbin T.E., Wycoff G.L., 1998, "The ACT Reference Catalog", (ACT RC) (1998AJ....115.2161U, Cat. I/246) Wright C.O., Egan M.P., Kraemer K.E., Price S.D., 2003, "The Tycho-2 Spectral Type Catalog" (2003AJ....125..359W, Cat.III/231 ) Author's Address: Nina V. Kharchenko Siegfried Roeser Main Astronomical Observatory ZAH NAS of Ukraine Astronomisches Rechen-Institut 27 Academica Zabolotnogo Str. 12-14 Moenchhofstrasse 03680 Kiev D-69120 Heidelberg Ukraine Germany Voice: +(380)44-266-4768 Voice: (+49)6221 54-1858 Fax: +(380)44-266-2147 Fax: (+49)6221 54-1888 e-mail: nkhar(at) e-mail:
(End) Nina V. Kharchenko [Kiev], Francois Ochsenbein [CDS] 25-Sep-2009
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

catalogue service

© Université de Strasbourg/CNRS

    • Contact