J/AJ/132/2219 Speckle interferometry at USNO. XII (Mason+, 2006)
Speckle interferometry at the US Naval Observatory. XII.
Mason B.D., Hartkopf W.I., Wycoff G.L., Holdenried E.R.
<Astron. J., 132, 2219-2230 (2006)>
=2006AJ....132.2219M 2006AJ....132.2219M
ADC_Keywords: Stars, double and multiple
Keywords: binaries: general - binaries: visual - techniques: interferometric
Abstract:
The results of 1657 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 2000 short-exposure
images. These observations are averaged into 1111 mean relative
positions and range in separation from 0.16" to 16.99", with
a median separation of 1.65". This is the 12th in a series of
papers presenting measurements obtained with this system and covers
the period 2005 January 3-December 29. Included in these data are 30
older measurements whose positions were previously deemed possibly
aberrant but are no longer classified this way following a confirming
observation. Sixteen of these systems have new orbital elements, which
are presented here as well. For eta Coronae Borealis (STF 1937) we
determine masses of 1.207 and 1.077M☉ and an orbital parallax of
54.95mas.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 57 970 Speckle interferometric measurements of double stars
table2.dat 43 15 Binaries not found
table3.dat 74 175 Speckle interferometric measurements and residuals
to systems with orbits
refs.dat 92 67 References
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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/131/2687 : Speckle interferometry at USNO. XI. (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 identification (HHMM.m+DDMM)
12- 19 A8 --- Disc Discoverer designation
21- 24 A4 --- m_Disc System components concerned (if not AB)
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 --- N Number of observations contained in the mean
51- 57 A7 --- Note Individual notes (1)
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Note (1): Notes as follows:
C = Confirming Observation.
1 = Data collected for Mason et al. (2006, Cat. J/AJ/131/2697),
but the measure was deemed too different from historical
measures. The large change is now confirmed.
2 = Large change in separation and/or position angle.
3 = Linear elements determined. See Hartkopf et al. (2006b).
4 = New pair, discovered while searching for WDS 18482-1820=J1636,
see text
5 = New companion to 21138+3711=COU1816, see text
50-185 = 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 designation (HHMMm+DDMM, J2000)
12- 19 A8 --- Disc Discoverer designation
22- 25 I4 yr Epoch Epoch of observation
27- 29 I3 deg PA Position Angle
31- 33 F3.1 deg Sep Separation
35- 38 F4.1 mag mag1 Magnitude of the primary
40- 43 F4.1 mag mag2 Magnitude of the secondary
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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 identification (HHMM.m+DDMM)
12- 19 A8 --- Disc Discoverer designation
21- 24 A4 --- m_Disc System components concerned (if not AB)
26- 33 F8.3 yr Epoch ? Epoch of observation
35- 39 F5.1 deg PA ? Position angle
41- 44 F4.2 arcsec Sep ? Separation
46- 47 I2 --- N ? Number of observations contained in the mean
49- 53 F5.1 deg (O-C)PA The O-C position angle residual
55- 59 F5.2 arcsec (O-C)Sep The O-C separation residual
61- 68 A8 --- Ref Observation reference, in refs.dat file
70- 74 A5 --- Notes Notes on system observed (1)
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Note (1): Flag as follows:
* = System used in characterizing errors
1 = Residuals may indicate a slight runoff in elements; however,
available data are deemed insufficient for a new orbital
calculation at this time
2 = New orbital elements are given in Table 7, with ephemerides in
Table 8; the orbit is illustrated in Figure 2a
3 = This orbit might possibly be fit better with linear elements.
See Hartkopf et al. (2006, in prep.)
4 = This measure was inconsistent with previous measures, so not
included in Mason et al. (2004, Cat. J/AJ/128/3012).
These data confirm the residual trend
5 = This measure was inconsistent with previous measures, so not
included in Mason et al. (2006, Cat. J/AJ/131/2687).
These data confirm the residual trend.
6 = New orbital elements are given in Table 4, with ephemerides in
Table 5; the orbit is illustrated in Figure 1
7 = This system was expected to show significant motion over the
calendar year, so multiple observations were obtained.
8 = New orbital elements are given in Table 7, with ephemerides in
Table 8; the orbit is illustrated in Figure 2
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Ref Reference code
10- 28 A19 --- BibCode BibCode
30- 50 A21 --- Author Author's name
52- 92 A41 --- Com Comments
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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 XI 2006AJ....131.2687M 2006AJ....131.2687M, Cat. J/AJ/131/2687
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] 24-Jul-2008