I/272 M2000: Bordeaux Carte du Ciel zone +11<Dec<+18 (Rapaport+, 2001)
M2000 : an astrometric catalog in the Bordeaux Carte du Ciel zone
+11 degrees < δ < +18 degrees
Rapaport M., Le Campion J.-F., Soubiran C., Daigne G., Perie J.-P.,
Bosq F., Colin J., Desbats J.-M., Ducourant C., Mazurier J.-M.,
Montignac G., Ralite N., Requieme Y., Viateau B.
<Astron. Astrophys. 376, 325 (2001)>
=2001A&A...376..325R 2001A&A...376..325R
ADC_Keywords: Positional data ; Meridian observations ; Astrographic zones
Keywords: astrometry - catalogs
Description:
During four years, systematic observations have been conducted in
drift scan mode with the Bordeaux automated meridian circle in the
declination band [+11 ; +18]. The resulting astrometric catalog
includes about 2 300 000 stars down to the magnitude limit VM=16.3.
Nearly all stars (96%) have been observed at least 6 times, the
catalog being complete down to VM=15.4. The median internal standard
error in position is about 35mas in the magnitude range 11<VM<15,
which degrades to about 50mas when the faintest stars are considered.
M2000 provides also one band photometry with a median internal
standard error of 0.04mag. Comparisons with the Hipparcos and bright
part of Tycho-2 catalogs have enabled to estimate external errors in
position to be lower than 40mas. In this zone and at epoch 1998, the
faint part of Tycho-2 is found to have an accuracy of 116mas in alpha
instead of 82mas deduced from the model-based standard errors given
in the catalog.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
cat00h.dat 104 34269 Catalog in RA band 0h-1h
cat01h.dat 104 32456 Catalog in RA band 1h-2h
cat02h.dat 104 32891 Catalog in RA band 2h-3h
cat03h.dat 104 36291 Catalog in RA band 3h-4h
cat04h.dat 104 48375 Catalog in RA band 4h-5h
cat05h.dat 104 143889 Catalog in RA band 5h-6h
cat06h.dat 104 234684 Catalog in RA band 6h-7h
cat07h.dat 104 159540 Catalog in RA band 7h-8h
cat08h.dat 104 70757 Catalog in RA band 8h-9h
cat09h.dat 104 39726 Catalog in RA band 9h-10h
cat10h.dat 104 28020 Catalog in RA band 10h-11h
cat11h.dat 104 23678 Catalog in RA band 11h-12h
cat12h.dat 104 22356 Catalog in RA band 12h-13h
cat13h.dat 104 24603 Catalog in RA band 13h-14h
cat14h.dat 104 29189 Catalog in RA band 14h-15h
cat15h.dat 104 38678 Catalog in RA band 15h-16h
cat16h.dat 104 58695 Catalog in RA band 16h-17h
cat17h.dat 104 115896 Catalog in RA band 17h-18h
cat18h.dat 104 269806 Catalog in RA band 18h-19h
cat19h.dat 104 373885 Catalog in RA band 19h-20h
cat20h.dat 104 260993 Catalog in RA band 20h-21h
cat21h.dat 104 103308 Catalog in RA band 21h-22h
cat22h.dat 104 62278 Catalog in RA band 22h-23h
cat23h.dat 104 42059 Catalog in RA band 23h-24h
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See also:
I/21 : Astrographic Catalogue (AC), +05/+31deg (Lacroute+ 1981)
I/22 : Astrographic Catalogue (AC), -02/+04deg (Lacroute+ 1981)
I/96 : Astrographic Catalogue, +01 to +31 Degrees (Fresneau 1983)
I/154 : Astrographic Catalogue, zones -02 to +31 degrees (Roeser 1990)
I/171 : Astrographic Catalog Reference Stars (ACRS) (Corbin+ 1991)
I/247 : The AC2000 Catalogue (Urban+ 1997)
I/261 : The FON Astrographic Catalogue (FONAC) (Kislyuk+ 1999)
I/268 : UCAC1 Catalogue (Zacharias+ 2000)
Byte-by-byte Description of file: cat*.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- ID Identifier (1)
15- 16 I2 h RAh Right ascension J2000 (hours)
18- 19 I2 min RAm Right ascension J2000 (minutes)
21- 27 F7.4 s RAs Right ascension J2000 (seconds)
29 A1 --- DE- Declination sign (J2000)
30- 31 I2 deg DEd Declination J2000 (degree)
33- 34 I2 arcmin DEm Declination J2000 (arcmin)
36- 41 F6.3 arcsec DEs [0,60] Declination J2000 (arcsec)
43- 48 F6.3 mag Vmag Apparent magnitude in Meriden band (2)
50- 51 I2 --- o_RAs Number of observations kept in right ascension
53- 54 I2 --- o_DEs Number of observations kept in declination
56- 57 I2 --- o_Vmag Number of observations kept in magnitude
59- 61 I3 --- Ntot Total number of observations
65- 69 F5.3 arcsec e_RAs Standard error in right ascension
73- 77 F5.3 arcsec e_DEs Standard error in declination
81- 85 F5.3 mag e_Vmag Standard error in Vmag
88- 94 F7.2 yr EpRA Mean epoch of observations in right ascension
97-103 F7.2 yr EpDE Mean epoch of observations in declination
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Note (1): A local numbering system has been used, or when available,
designations from the following catalogs :
NLTT (Luyten, 1979, Cat. I/98),
G Lowell Proper Motion Survey (Giclas et al., 1971, Cat. I/79),
RC3 (de Vaucouleurs et al., 1991, Cat. VII/155)
Note (2): The bandpass is defined by two combined filters (GC495 and BG38)
as the wavelength range 520-680nm; it differs slightly from Tycho VT
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Acknowledgements: Caroline Soubiran
(End) Patricia Bauer [CDS] 06-Sep-2001