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HD 189855


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Ýlgili Makaleler

Pulkovo compilation of radial velocities for 35495 stars in a common system.
Not Available

UBV (RI)c standard stars in the E- and F-regions and in the Magellanic Clouds - a revised catalogue.
Not Available

Photometric observations of emission B-stars in the southern Milky Way
In order to study the distribution of Be stars and their correlation tothe local spiral structure of the Galaxy photoelectric UBV photometrywas carried out for a total of 488 Be stars located in the southernMilky Way between galactic longitudes 315 and 45 deg. UBV magnitudes arepresented for these stars.

Photometric reductions and the lightcurve of (51) NEMAUSA
The light curve of the minor planet (51) Nemausa is derived on the basisof 1779 photoelectric (B and V) observations and a photometric reductionusing a rigorous least squares method. Separate light curves are givenfor the B and V observations, respectively. An absolute B-V magnitudefor (51) Nemusa of 0.787 + or - 0.004 mag was estimated. A detaileddescription of the least squares method is presented.

UBV photometry of E region standard stars of intermediate brightness
Photometry data are given for 335 stars in the nine E regions.Observations were made using a photometer and filters on the 47 cmreflector at Cape Town. The stellar dispersions are summarized. Data arepresented in tabular form.

Photometric standard stars for the UBV and (RI)KC systems.
Not Available

Fainter Standards for VRI Photometry in the E Regions
Not Available

Standard magnitudes in the E regions.
Not Available

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Yay
Sað Açýklýk:20h03m58.15s
Yükselim:-44°38'19.3"
Görünürdeki Parlaklýk:8.333
Uzaklýk:568.182 parsek
özdevim Sað Açýklýk:35.2
özdevim Yükselim:-20.4
B-T magnitude:9.694
V-T magnitude:8.446

Kataloglar ve belirtme:
Özgün isimleri
HD 1989HD 189855
TYCHO-2 2000TYC 7959-865-1
USNO-A2.0USNO-A2 0450-38507414
HIPHIP 98798
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