Access to Astronomical Catalogues

← Click to display the menu
J/AJ/124/2254    Speckle interferometry at USNO. VIII.       (Mason+, 2002)

Speckle interferometry at the US naval observatory. VIII. Mason B.D., Hartkopf W.I., Urban S.E., Wycoff G.L., Pascu D., Hall D.M., Hennessy G.S., Platais I., Rafferty T.J., Holdenried E.R. <Astron. J. 124, 2254 (2002)> =2002AJ....124.2254M
ADC_Keywords: Stars, double and multiple ; Interferometry Keywords: binaries: general - binaries: visual - techniques: interferometric Abstract: The results of 2044 speckle interferometric observations of double stars, made with the 26 inch (66cm) refractor of the US Naval Observatory, are presented. Each speckle interferometric observation of a system represents a combination of over a thousand short-exposure images. These observations are averaged into 1399 mean positions and range in separation from 0.16" to 14.97", with a mean separation of 2.51". This is the eighth in a series of papers presenting measures obtained with this system and covers the period 2001 March 18 through 2001 December 30. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 52 8 New WSI Pairs table2.dat 59 1218 Speckle Interferometric Measurements of Double Stars table3.dat 88 181 Speckle Interferometric Measurements and Residuals to Systems with Orbits
See also: I/237 : The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996) J/AJ/117/1905 : Speckle interferometry at USNO. II. (Germain+, 1999) J/AJ/117/2511 : Speckle interferometry at USNO. III (Germain+, 1999) J/AJ/118/1395 : Speckle interferometry at USNO. IV. (Douglass+, 1999) J/AJ/119/3071 : Speckle interferometry at USNO. V. (Douglass+, 2000) J/AJ/120/1120 : Speckle interferometry at USNO. VI. (Mason+, 2000) J/AJ/122/1586 : Speckle interferometry at USNO. VII. (Mason+, 2001) J/AJ/127/539 : Speckle interferometry at USNO. IX. (Mason+, 2004) J/AJ/128/3012 : Speckle interferometry at USNO. X. (Mason+, 2004) J/AJ/131/2687 : Speckle interferometry at USNO. XI. (Mason+, 2004) J/AJ/132/2219 : Speckle interferometry at USNO. XII (Mason+, 2006) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right Ascension J2000 (hours) 4- 5 I2 min RAm Right Ascension J2000 (minutes) 7- 10 F4.1 s RAs Right Ascension J2000 (seconds) 12 A1 --- DE- Declination J2000 (sign) 13- 14 I2 deg DEd Declination J2000 (degrees) 16- 17 I2 arcmin DEm Declination J2000 (minutes) 19- 20 I2 arcsec DEs Declination J2000 (seconds) 24- 35 A12 --- DD Name of pair 37- 40 F4.1 mag magA Estimated magnitude of primary 44- 47 F4.1 mag magB Estimated magnitude of secondary 50- 52 A3 --- Note Individual Notes (1)
Note (1): Note number have the following meaning: 1: Serendipitously found while searching for MLB 699 and MLB 658 2: also known as BD +29 3779 3: new component to RST 4669 4: serendipitously found while searching for LDS 2511 5: new component to COU 2323 6: new component to TDT 4209
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 11 A11 --- WDS WDS name based on J2000 coordinates 13- 25 A13 --- DD Discoverer designation 27- 35 F9.4 yr Epoch Epoch of observation 37- 41 F5.1 deg PA Position angle (1) 42 A1 --- u_PA [:] Uncertainty flag for PA (2) 44- 48 F5.2 arcsec Sep Separation 49 A1 --- u_Sep [:] Uncertainty flag for Sep (2) 51 I1 --- NObs Number of observations contained in the mean 53- 58 A6 --- Note Object notes (3)
Note (1): The position angle has not been corrected for precession and is, thus, based on the equinox for the epoch of observation. Note (2): These low-quality observations may be due to one or more of the following parameters: close separation, large Δm, one or both components too faint, a large zenith distance, and poor seeing or transparency. They are included primarily because of either the confirming nature of the observation or the number of years since the last measured position. Note (3): Notes: C = Confirming observation. 1 = Discovered by J. C. Hammond with the USNO 26 inch, 1905 November 16 (Hall, 1929, Equatorial Observations 1908-1926 (Publ. US Nav. Obs., 2d Ser., 12, Part 1) (Washington: GPO), p. 236); remeasured here, 2001 November 16. 2 = Identifed erroneously as TDS 94 in Mason et al., 2000AJ....120.3244M. 3 = Also see Table 1. 50-171 = Number of years since last measure.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 11 A11 --- WDS WDS name based on J2000 coordinates 13- 25 A13 --- DD Discoverer designation 27- 35 F9.4 yr Epoch ? Epoch of observation 37- 41 F5.1 deg PA ? Position angle 43- 46 F4.2 arcsec Sep ? Separation 48 I1 --- NObs ? Number of observations contained in the mean 50- 54 F5.1 deg (O-C)PA The O-C position angle residual 56- 60 F5.2 arcsec (O-C)Sep The O-C separation residual 62- 86 A25 --- Ref Observation reference 88 A1 --- f_Ref Flag on Ref (1)
Note (1): Notes: * = System used in characterizing errors; 1 = Additional O-C = 8.5° and 0.01 arcsec from Starikova, 1977ATsir.961....7S 2 = Additional O-C = 0.7° and -0.07 arcsec from Olevic & Jovanovic, 1998 Circ. d'Inf., No. 136 3 = Additional O-C = 2.1° and 0.07 arcsec from Olevic & Popovic, 2000, Circ. d'Inf., No. 141 4 = Additional O-C = 4.9° and 0.07 arcsec from Popovic, 1969, Bull. Obs. Astron. Belgrade, No. 27, 33
History: From electronic version of the journal References: Douglass et al., Paper I 1997ApJS..111..289D Germain et al., Paper II 1999AJ....117.1905G, Cat. J/AJ/117/1905 Germain et al., Paper III 1999AJ....117.2511G, Cat. J/AJ/117/2511 Douglass et al., Paper IV 1999AJ....118.1395D, Cat. J/AJ/118/1395 Douglass et al., Paper V 2000AJ....119.3071D, Cat. J/AJ/119/3071 Mason et al., Paper VI 2000AJ....120.1120M, Cat. J/AJ/120/1120 Mason et al., Paper VII 2001AJ....122.1586M, Cat. J/AJ/122/1586 Mason et al., Paper IX 2004AJ....127..539M, Cat. J/AJ/127/539 Mason et al., Paper X 2004AJ....128.3012M, Cat. J/AJ/128/3012 Mason et al., Paper XI 2006AJ....131.2687M, Cat. J/AJ/131/2687 Mason et al., Paper XII 2006AJ....132.2219M, Cat. J/AJ/132/2219 Mason et al., Paper XIII 2007AJ....134.1671M, Cat. J/AJ/134/1671 Mason et al., Paper XIV 2008AJ....136.2223M, Cat. J/AJ/136/2223 Mason et al., Paper XV 2010AJ....140..480M, Cat. J/AJ/140/480 Mason et al., Paper XVI 2011AJ....141..157M, Cat. J/AJ/141/157 Mason et al., Paper XVII 2011AJ....142...46M, Cat. J/AJ/142/46 Mason et al., Paper XVIII 2012AJ....143..124M, Cat. J/AJ/143/124
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 12-Nov-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

catalogue service