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HD 221512

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관련 글

Pulkovo compilation of radial velocities for 35495 stars in a common system. Not Available
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.
Radial-velocity measurements. V - Ground support of the HIPPARCOS satellite observation program The paper presents data on 1070 radial velocity measurements of starsdistributed in 39 fields measuring 4 deg x 4 deg. The PPO series ofFehrenbach et al. (1987) and Duflot et al. (1990) is continued using theFehrenbach objective prism method.

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관측 및 측정 데이터

별자리:	케페우스자리
적경:	23^h32^m11.57^s
적위:	+65Â°44'20.9"
가시등급:	6.648
거리:	132.626 파섹
적경상의 고유운동:	61.7
적위상의 고유운동:	7
B-T magnitude:	6.91
V-T magnitude:	6.67

천체목록:

일반명	(Edit)
HD 1989	HD 221512
TYCHO-2 2000	TYC 4292-993-1
USNO-A2.0	USNO-A2 1500-09839061
HIP	HIP 116161

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