I/147 Carlsberg Meridian Catalog, Vol. 4 (CMC4, 1989)
Carlsberg Meridian Catalog, vol. 4 (CMC4)
Copenhagen University Obs., Royal Greenwich Obs., and
Real Instituto y Observatorio de la Armada en San Fernando
<Observations of positions of stars and planets made
in the years 1984-1988 (1989)>
ADC_Keywords: Meridian observations ; Positional data ; Proper motions
Description:
The Carlsberg Meridian Catalogues give accurate positions, proper
motions and magnitudes of stars north of declination -45deg and down
to 15th magnitude. They also contain observations of the solar system
objects: Mars, Callisto, Saturn, Titan, Iapetus, Uranus, Neptune,
Pluto, and many minor planets. Typical mean errors for an entry are
0.1arcsec in position, 3mas/yr in proper motion, and 0.05mag in
magnitude. The stars observed belong to a large number of observing
programmes typically dealing with the reference frame or with galactic
kinematics.
The Carlsberg Automatic Meridian Circle on La Palma is operated by
Copenhagen University Observatory, Royal Greenwich Observatory, and
Real Instituto y Observatorio de la Armada at the Observatory del
Roque de los Muchachos of the Instituto de Astrofisica de Canarias.
For a detailed introduction, please refer to the printed catalogue.
A description of the programme may also be found in the 1993 paper
by Fabricius (=1993BICDS..42....5F 1993BICDS..42....5F), from which the present
description is derived.
This 4th volume corresponds to observations made from May 1984
to February 1988. It supersedes the first three volumes.
Published by:
Copenhagen University Observatory,
Royal Greenwich Observatory and
Real Instituto y Observatorio de la Armada en San Fernando. 1989.
Extragalactic Objects:
The attention is drawn to QSO, BL Lac and other non-stellar
objects in this volume:
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Number Name
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408181 3C 273B
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 152 50929 Program stars
table2.dat 60 7984 *Observations of Planets
table3.dat 55 2460 Magnitude observations of 474 variable stars
table5.dat 55 5057 *Mean positions, on J2000.0, of FK5 stars
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Note on table2: Apparent geocentric positions are given. The planets are:
Mars, Callisto, Saturn, Titan, Iapetus, Uranus, Neptune,
and 62 minor planets
Note on table5: Mean positions of observations made at upper culmination
are given; there are:
1170 FK5 stars observed in 1984,
1285 FK5 stars observed in 1985,
1330 FK5 stars observed in 1986 and
1332 FK5 stars observed in 1987/88.
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- CMC [100001/416057] CMC Number
8- 16 I9 10-7h RAhour Right ascension, Equinox J2000
17- 25 I9 10-6deg DEudeg Declination, Equinox J2000
26- 29 I4 10-2mag Mag Magnitude, 0.01 mag.
30 A1 --- n_Mag [V:*] A "V" indicates known variables (2)
31- 34 I4 10-2yr EpRA-1900 [8434/8813] Mean epoch of R.A (offset 1900)
35- 39 I5 10-2yr EpDE-1900 [8434/8813] Mean epoch of Dec.(offset 1900)
40- 41 I2 --- o_RAhour Number of observations for RA
42- 43 I2 --- o_DEudeg Number of observations for DE
44- 45 I2 --- o_Mag Number of observations for Mag
46- 50 F5.2 --- PF_RA Parallax Factor in RA
RA(Hel) = RA(Cat) + PF * par * sec(DE)
51- 55 F5.2 --- PF_DE Parallax Factor in DE
DE(Hel) = DE(Cat) + PF * par
56- 63 I8 10-5s/yr pmRA []?=999990 Proper motion in R.A.
64- 69 I6 10-5s/yr e_pmRA []?=0 Mean error in pmRA.
70- 75 I6 10-4arcsec/yr pmDE []?=999990 Proper motion in Dec
76- 78 I3 10-4arcsec/yr e_pmDE []?=0 Mean error in pmDE.
79 A1 --- pmFlag [*] Set to * if proper motion only based
on one earlier epoch. (3)
81- 82 A2 --- SpType Spectral type
83- 91 I9 --- DM BD/CD/CPD designations (4)
92 I1 --- m_DM ? component number added by CDS, or blank.
93- 98 I6 --- SAO [1/258997]?=0 SAO number
99-104 I6 --- GC [1/33342]?=0 GC number
105-112 I8 --- AGK3 AGK3 number
113-119 I7 --- HD [1/359083]?=0 HD number
120-128 A9 --- ADS ADS identification
129-142 A14 --- WDS Washington Double Star (or IDS)
143-152 I10 --- CAMC Internal CAMC number
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Note (2): This flag takes the values:
':' when Mag was reported with one decimal only (default two decimals)
'*' when Mag was reported without any decimal
'V' (variable) the individual magnitudes for these stars are
given in table3
Note (3): This flag is not used from CMC6 because the computation of
the mean errors of the proper motions has been improved.
Note (4): this number is computed as
± (N*10000000 + |Zone|*100000 + Number), where
N=1: BD (+89 to -22)
N=2: CoD (-23 to -45)
N=3: CPD
N=4: DM number added by CDS
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- Planet Minor planet number or planet number (1)
7- 21 F15.6 d TDT-2440000 Julian Date of observation (offset 2440000)
22 A1 --- meFlag [*] An asterisk if the internal mean error
of the observation is high.
26- 27 I2 h RAh ? Right ascension (2)
29- 30 I2 min RAm ? Right ascension (2)
32- 37 F6.3 s RAs ? Right ascension (2)
41 A1 --- DE- ? Declination (2)
42- 43 I2 deg DEd ? Declination (2)
45- 46 I2 arcmin DEm ? Declination (2)
48- 52 F5.2 arcsec DEs ? Declination (2)
56- 60 F5.2 mag Mag ? Magnitude
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Note (1): The minor planet number is:
99040 for Mars
99054 for Callisto
99060 for Saturn
99066 for Titan
99068 for Iapetus
99070 for Uranus
99080 for Neptune
Note (2): The apparent geocentric positions referred to the equinox of
date, in the improved IAU system, are given.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- CMC catalogue number
8- 14 I7 --- Seq Sequence number in catalogue
16- 25 A10 --- Name Star name
26- 38 F13.5 d JD Julian Date of observations
39- 44 I6 0.01mag Mag Magnitude in units 0.01 mag.
45- 55 I11 --- CAMC Internal CAMC number
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- CMC [10/16500] Number computed from FK5 (1)
8- 16 I9 10-7h RAhour Right ascension, Equinox=J2000
17- 25 I9 10-6deg DEudeg Declination, Equinox=J2000
26- 29 I4 10-2mag Mag Magnitude, 0.01 mag.
30 A1 --- Vflag [V] A "V" indicates known variables (2)
31- 34 I4 10-2yr EpRA-1900 [8434/8813] Mean epoch of R.A (offset 1900)
35- 39 I5 10-2yr EpDE-1900 [8434/8813] Mean epoch of Dec.(offset 1900)
40- 41 I2 --- o_RAhour Number of observations for RA
42- 43 I2 --- o_DEudeg Number of observations for DE
44- 45 I2 --- o_Mag Number of observations for Mag
46- 50 F5.2 --- PF_RA Parallax Factor in RA
51- 55 F5.2 --- PF_DE Parallax Factor in DE
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Note (1): for FK5 stars, the CMC is FK5nr * 10 + component code
Note (2): the individual magnitudes for these stars are given in table3
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See also:
I/149 : FK5 (Fifth Fundamental Catalogue, Fricke et al., 1988)
I/170 : CMC5 (5th Carlsberg Meridian Catalogue, 1991)
I/189 : CMC6 (6th Carlsberg Meridian Catalogue, 1992)
I/205 : CMC7 (7th Carlsberg Meridian Catalogue, 1993)
I/213 : CMC8 (8th Carlsberg Meridian Catalogue, 1994)
Acknowledgments:
We sincerely thank Dr Claus Fabricius (Copenhaguen University
Observatory) for providing a fully documented tape in
September 1989.
Historical Notes:
* September 1989: Tape received at CDS from Claus Fabricius
(Copenhaguen University Observatory)
* 08-Nov-1995: Many magnitudes in table1, column 'Mag' had no decimal
(filled with blanks). This causes problems for interpretation since
no decimal point exists in this column. The difficulty was fixed
by replacing those blanks by zeroes, and adding the symbols ':'
and '*' in the column n_Mag (see Note(2) of table1 above).
Description standardized at CDS (F. Ochsenbein)
(End) F. Ochsenbein [CDS] 08-Nov-1995