J/AJ/135/1334 Speckle interferometry at the USNO station (Hartkopf+, 2008)
Speckle interferometry at the USNO flagstaff station:
observations obtained in 2003-2004 and 17 new orbits.
Hartkopf W.I., Mason B.D., Rafferty T.J.
<Astron. J., 135, 1334-1342 (2008)>
=2008AJ....135.1334H 2008AJ....135.1334H
ADC_Keywords: Binaries, orbits ; Interferometry
Keywords: binaries: general - binaries: visual - techniques: interferometric
Abstract:
Results are presented for 353 speckle interferometric observations of
double stars, obtained in 2003 and 2004 at the USNO Flagstaff Station
using the 1.55m Kaj Strand Astrometric Reflector. Separations range
from 0.12" to 7.42", with a median of 0.42". These two
observing runs concentrated on systems in need of improved orbital
elements, and new solutions have been determined for 17 systems as a
result.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 53 195 Speckle interferometric measurements of
double stars without orbits (195 means)
table2.dat 93 180 Speckle interferometric measurements and
residuals of systems with orbits (158 means)
table3.dat 111 17 New orbital elements
refs.dat 78 105 References for table2
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See also:
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2010)
J/AJ/106/637 : ICCD speckle observations. IX (Mason+, 1993)
J/AJ/106/1639 : Speckle observations of binary stars (McAlister+ 1993)
J/AJ/111/370 : Orbits of 37 close visual systems (Hartkopf+ 1996)
J/A+AS/134/545 : Double star measurements 1995-1997 (Aristidi+ 1999)
J/AJ/119/3084 : ICCD speckle obs. of binary stars. XXIII. (Hartkopf+, 2000)
J/A+A/367/865 : Speckle observations of binary systems (Prieur+ 2001)
J/AJ/127/1181 : Binary speckle measurements at Calar Alto (Docobo+, 2004)
J/other/AstBu/62.339 : Speckle interferometry of nearby multiples
(Balega+, 2007)
http://ad.usno.navy.mil/wds/orb6.html : Sixth Catalog of Orbits of Visual
Binary Stars homepage
http://ad.usno.navy.mil/wds/int4.html : Fourth Catalog of Interferometric
Measurements of Binary Stars homepage
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 designation (HHMMm+DDMM, 2000)
12- 19 A8 --- Disc Discoverer designation
21- 25 A5 --- Comp Observed components of multiple system
27- 35 F9.4 yr Epoch Epoch of observation (Besselian year)
37- 41 F5.1 deg PA [-5/360] Position angle
42 A1 --- u_PA [:] Uncertainty flag for PA
44- 48 F5.3 arcsec Sep Separation
49 A1 --- u_Sep [:] Uncertainty flag for Sep
51 I1 --- N Number of observations contained in the mean
53 A1 --- Note Object notes (1)
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Note (1): Notes as follows:
C = Measure confirming a new binary star
L = Linear elements determined; see Rectilinear Elements Catalog:
http://ad.usno.navy.mil/wds/lin1.html.
O-C residuals for this pair are -0.2° and 0.089".
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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, 2000)
12- 19 A8 --- Disc Discoverer designation
21- 24 A4 --- Comp Observed components of multiple system
26- 34 F9.4 yr Epoch ? Epoch of observation (Besselian year)
36- 40 F5.1 deg PA ? Position angle
42- 46 F5.3 arcsec Sep ? Separation
48 I1 --- N ? Number of observations contained in the mean
50- 54 F5.1 deg (O-C)PA O-C position angle residual
56- 61 F6.3 arcsec (O-C)Sep O-C separation residual
63- 91 A29 --- Ref Observation reference; see refs.dat file
93 A1 --- n_Ref Note on the system(1)
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Note (1): Flag as follows:
* = System used in characterizing errors.
1 = Position angle of this measure flipped by 180° for this orbit.
2 = This is the nearby pair GJ 234.
3 = This is the nearby pair G 250-209.
4 = This is the nearby pair GJ 473.
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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 designation (HHMMm+DDMM, 2000)
12- 13 A2 --- Fig Figure number
15- 24 A10 --- Disc Discover name
26- 31 F6.2 yr Per Period
33- 38 F6.2 yr e_Per Period uncertainty
40- 44 F5.3 arcsec a Semi-major axis
46- 50 F5.3 arcsec e_a Semi-major axis uncertainty
52- 56 F5.1 deg i Inclination
58- 61 F4.1 deg e_i Inclination uncertainty
63- 67 F5.1 deg Omega Longitude of node, equinox 2000
69- 72 F4.1 deg e_Omega Ω uncertainty
74- 80 F7.2 yr T0 Epoch of periastron passage, in fractional
Besselian year
82- 87 F6.2 yr e_T0 T0 uncertainty
89- 93 F5.3 --- e Eccentricity
95- 99 F5.3 --- e_e Eccentricity uncertainty
101-105 F5.1 deg omega Longitude of periastron
107-111 F5.1 deg e_omega ω uncertainty
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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- 29 A29 --- Ref Reference code
31- 49 A19 --- BibCode Bibcode
51- 78 A28 --- Com Comment
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 09-Aug-2010