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HD 188246


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Nova Sagittarii 2003 and V2377 Sagittarii
IAUC 8123 available at Central Bureau for Astronomical Telegrams.

A homogeneous catalog of new UBV and H-beta photometry of B- and A-type stars in and around the Scorpius-Centaurus OB association
B- and A-type stars in and near the Sco-Cen OB association areinvestigated with UBV and H-beta photometry to acquire data relevant tothe luminosity function of Sco-Cen. The measurements generally consistof two 10-s integrations of U, B, V, (W, N) filters, and theobservations are corrected iteratively for atmospheric extinction andinstrumental response. The data presented give the mean V magnitude,mean B-V, mean U-B, and the estimated uncertainties for these values.The catalog provides a homogeneous catalog of data for a large fieldwith stellar objects delineating membership to the association Sco-Cenand that affect the luminosity function of the aggregate.

Secondary UVBY standards in the Harvard E-regions
Photoelectric uvby photometry for 201 stars which are already UBV (RI)cstandards is presented. The photoelectric data are closely tied to theCousins uvby standards and the stars should be suitable for use asfainter (7-11 mag) secondary standards.

Secondary standards for H-beta photometry in the Southern Hemisphere (second series).
Not Available

Secondary standards for H-beta photometry in the E regions.
Not Available

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

The Baade-Wesselink method applied to field RR Lyrae stars. I - UBVRI photoelectric and radial velocity data
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987A&AS...69..135C&db_key=AST

Secondary standards for the Stromgren UVBY system
Observations of 158 E region stars have been made in the Stromgrensystem, using the 46-cm reflector at Cape Town. They are mostly brighterthan eighth magnitude and are intended for use as secondary standardsfor the four-color system. The E region relative zero points are definedwith a precision of + or - 0.001 mag, and the internal standard errorsof the colors life between + or - 0.001 and + or - 0.002 mag.

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 short period cepheids
613 UBV observations of 15 pulsating variables collected on the 1 mreflector at ESO, La Silla, Chile are reported. The variables observedhave periods between one and three days.

Photoelectric Photometry of Cepheid Variables with Periods Between One and Three Days
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1982A&AS...47..335D&db_key=AST

DDO Observations of Southern Stars
Not Available

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

A photoelectric UBV sequence in the region of the wing of the Small Magellanic Cloud
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978A&AS...33..107J&db_key=AST

Photoelectric UBV standard sequences in neighbouring parts of the clusters NGC 6256, 6304, 6638 - integrated photometry of NGC 4590, 6256, 6304, 6401, 6638.
Abstract image available at:http://adsabs.harvard.edu/abs/1976A&AS...25..281B

VRI standards in the E regions
Not Available

Standard Stars for VRI Photometry with S25 Response Photocathodes [Errata: 1974MNSSA..33....1C]
Not Available

Standard magnitudes in the E regions.
Not Available

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观测天体数据

星座:人馬座
右阿森松:19h56m05.23s
赤纬:-44°00'43.9"
视星:7.152
距离:495.05 天文距离
右阿森松适当运动:6.8
赤纬适当运动:-3.4
B-T magnitude:7.085
V-T magnitude:7.147

目录:
适当名称   (Edit)
HD 1989HD 188246
TYCHO-2 2000TYC 7946-1999-1
USNO-A2.0USNO-A2 0450-38342757
HIPHIP 98090

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