J/AJ/131/2687 Speckle interferometry at USNO. XI (Mason+, 2006)
Speckle interferometry at the US naval observatory. XI.
Mason B.D., Hartkopf W.I., Wycoff G.L., Rafferty T.J.
<Astron. J., 131, 2687-2694 (2006)>
=2006AJ....131.2687M 2006AJ....131.2687M
ADC_Keywords: Stars, double and multiple
Keywords: binaries: general - binaries: visual - techniques: interferometric
Abstract:
The results of 1683 speckle interferometric observations of double
stars, made with the 26 inch (66 cm) refractor of the US Naval
Observatory, are presented. Each speckle interferometric observation
of a system represents a combination of over 2000 short-exposure
images. These observations are averaged into 805 mean relative
positions and range in separation from 0.23" to 43.34", with
a median separation of 4.33". This is the 11th in a series of
papers presenting measurements obtained with this system and covers
the period 2004 January 4-December 30. Included in these data are two
older measurements whose positions were previously deemed possibly
aberrant but are no longer classified this way following a confirming
observation. Two of these systems have new orbital elements, which are
also presented here.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 57 702 Speckle Interferometric Measurements of Double Stars
table2.dat 44 7 Binaries not found
table3.dat 127 116 Speckle Interferometric Measurements and Residuals
to Systems with Orbits
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See also:
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/124/2254 : Speckle interferometry at USNO. VIII. (Mason+, 2002)
J/AJ/127/539 : Speckle interferometry at USNO. IX. (Mason+, 2004)
J/AJ/128/3012 : Speckle interferometry at USNO. X. (Mason+, 2004)
J/AJ/132/2219 : Speckle interferometry at USNO. XII. (Mason+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS name (HHMMm+DDMM, J2000)
13- 19 A7 --- Disc Discoverer designation
21- 24 A4 --- Comp Additional system components
26- 33 F8.3 yr Epoch Epoch of observation
35- 39 F5.1 deg PA Position angle
40 A1 --- u_PA [:] Uncertainty flag for PA
42- 46 F5.2 arcsec Sep Separation
47 A1 --- u_Sep [:] Uncertainty flag for Sep
49 I1 --- o_Sep Number of observations contained in the mean
51- 57 A7 --- Note Object notes (1)
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Note (1): Object notes as follows:
C = Confirming Observation
L = Linear elements determined. See Hartkopf et al.
(2007AJ....134.1671M 2007AJ....134.1671M)
a = Large change in separation and/or angle of position
b = Much better measure than the uncertain one of
Mason et al. (2001, Cat. J/AJ/122/1586)
N = 50-184 : Number of years since last measure
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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- 10 A10 --- WDS WDS name (HHMMm+DDMM, J2000)
12- 19 A8 --- Disc Discoverer designation
21- 24 I4 yr Date Date
26- 28 I3 deg PA Published position angle
30- 32 F3.1 arcsec Sep Published separation
34- 37 F4.1 mag mag1 Published primary magnitude
39- 42 F4.1 mag mag2 Published secondary magnitude
44 A1 --- Note [1] Inaccurate position (1)
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Note (1): 1 = Only arcminute coordinates are available for this pair,
resolved by Herschel (1833, MmRAS, 6, 1), although he could
"not define it. Night not good; telescopes give double images."
Probably an erroneous detection.
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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- 10 A10 --- WDS WDS name (HHMMm+DDMM, J2000)
13- 20 A8 --- Disc Discoverer designation
22- 25 A4 --- Comp Additional system components
27- 34 F8.3 yr Epoch ? Epoch of observation
36- 40 F5.1 deg PA ? Position angle
42- 45 F4.2 arcsec Sep ? Separation
47- 48 I2 --- o_Sep ? Number of observations contained in the mean
50- 53 F4.1 deg d(PA) The O-C position angle residual
55- 59 F5.2 arcsec d(Sep) The O-C separation residual
61- 63 A3 --- n_Ref Notes on Ref (1)
65-127 A63 --- Ref Observation reference
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Note (1): Notes as follows:
* = System used in characterizing errors.
1 = This orbit might possibly be fit better with linear elements.
See Hartkopf et al. (2007AJ....134.1671M 2007AJ....134.1671M).
2 = This measure was inconsistent with previous measures, so not
included in Mason et al. (2004, Cat. J/AJ/127/539). However,
available data are deemed insufficient for a new orbital
calculation at this time.
3 = This system was expected to show significant motion over the
calendar year, so multiple observations have been obtained.
4 = The new orbit is listed in Table 4, ephemerides based on these
elements are listed in Table 6, and the orbit is illustrated
in Figure 2.
5 = This orbit calculates the opposite quadrant for the position
angle, however, it is clearly in this quadrant with an obvious
Δm of ∼1.5.
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History:
From electronic version of the journal
References:
Douglass et al., Paper I 1997ApJS..111..289D 1997ApJS..111..289D
Germain et al., Paper II 1999AJ....117.1905G 1999AJ....117.1905G, Cat. J/AJ/117/1905
Germain et al., Paper III 1999AJ....117.2511G 1999AJ....117.2511G, Cat. J/AJ/117/2511
Douglass et al., Paper IV 1999AJ....118.1395D 1999AJ....118.1395D, Cat. J/AJ/118/1395
Douglass et al., Paper V 2000AJ....119.3071D 2000AJ....119.3071D, Cat. J/AJ/119/3071
Mason et al., Paper VI 2000AJ....120.1120M 2000AJ....120.1120M, Cat. J/AJ/120/1120
Mason et al., Paper VII 2001AJ....122.1586M 2001AJ....122.1586M, Cat. J/AJ/122/1586
Mason et al., Paper VIII 2002AJ....124.2254M 2002AJ....124.2254M, Cat. J/AJ/124/2254
Mason et al., Paper IX 2004AJ....127..539M 2004AJ....127..539M, Cat. J/AJ/127/539
Mason et al., Paper X 2004AJ....128.3012M 2004AJ....128.3012M, Cat. J/AJ/128/3012
Mason et al., Paper XII 2006AJ....132.2219M 2006AJ....132.2219M, Cat. J/AJ/132/2219
Mason et al., Paper XIII 2007AJ....134.1671M 2007AJ....134.1671M, Cat. J/AJ/134/1671
Mason et al., Paper XIV 2008AJ....136.2223M 2008AJ....136.2223M, Cat. J/AJ/136/2223
Mason et al., Paper XV 2010AJ....140..480M 2010AJ....140..480M, Cat. J/AJ/140/480
Mason et al., Paper XVI 2011AJ....141..157M 2011AJ....141..157M, Cat. J/AJ/141/157
Mason et al., Paper XVII 2011AJ....142...46M 2011AJ....142...46M, Cat. J/AJ/142/46
Mason et al., Paper XVIII 2012AJ....143..124M 2012AJ....143..124M, Cat. J/AJ/143/124
Mason et al., Paper XIX 2013AJ....146...56M 2013AJ....146...56M, Cat. J/AJ/146/56
Hartkopf et al., Paper XX 2015AJ....150..136H 2015AJ....150..136H, Cat. J/AJ/150/136
Mason et al., Paper XXI 2017AJ....153...20M 2017AJ....153...20M, Cat. J/AJ/153/20
Mason et al., Paper XXII 2017AJ....154..183M 2017AJ....154..183M, Cat. J/AJ/154/183
Mason et al., Paper XXIII 2018AJ....156..240M 2018AJ....156..240M
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 25-Sep-2008