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HD 177810 (V1442 Aql)


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High-Resolution Imaging of Dust Shells by Using Keck Aperture Masking and the IOTA Interferometer
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Speckle Interferometry of New and Problem Hipparcos Binaries. II. Observations Obtained in 1998-1999 from McDonald Observatory
The Hipparcos satellite made measurements of over 9734 known doublestars, 3406 new double stars, and 11,687 unresolved but possible doublestars. The high angular resolution afforded by speckle interferometrymakes it an efficient means to confirm these systems from the ground,which were first discovered from space. Because of its coverage of adifferent region of angular separation-magnitude difference(ρ-Δm) space, speckle interferometry also holds promise toascertain the duplicity of the unresolved Hipparcos ``problem'' stars.Presented are observations of 116 new Hipparcos double stars and 469Hipparcos ``problem stars,'' as well as 238 measures of other doublestars and 246 other high-quality nondetections. Included in these areobservations of double stars listed in the Tycho-2 Catalogue andpossible grid stars for the Space Interferometry Mission.

The 74th Special Name-list of Variable Stars
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Classification of 831 two-micron sky survey sources south of +5 degrees.
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The Distribution of the BD M-Type Stars Along the Galactic Equator.
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Observation and Astrometry data

Constellation:Aquila
Right ascension:19h05m48.19s
Declination:+12°12'27.2"
Apparent magnitude:7.516
Distance:1298.701 parsecs
Proper motion RA:17.7
Proper motion Dec:2.8
B-T magnitude:9.993
V-T magnitude:7.721

Catalogs and designations:
Proper NamesV1442 Aql
  (Edit)
HD 1989HD 177810
TYCHO-2 2000TYC 1048-621-1
USNO-A2.0USNO-A2 0975-14077045
HIPHIP 93773

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