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HD 185378

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Detection of red supergiant stars on the colour-colour diagrams in the system UBVRI. Not Available
Photometry of Stars in the Field of V345 and V553 Aquilae Not Available
UBV(RI)c photometry of equatorial standard stars - A direct comparison between the northern and southern systems UBV(RI)c photometry of 212 stars from Landolt's list of equatorialstandards is presented. The observations are tied to the system definedby Cousin's E-region standards. A comparison of the present results withLandolt's reveals reasonably good agreement for (V-R)c and (V-I)c, butmarked systematic differences for (B-V) and (U-B). The UBV systems ofCousins and Landolt are evidently not the same and both probably differfrom Johnson's original system.
Photoelectric observations of classical cepheids. Not Available
UBVRI photometric standard stars around the celestial equator It is pointed out that accurate, internally consistent, and readilyaccessible standard star photometric sequences are necessary for thecalibration of the intensity and color data which astronomers obtain atthe telescope. The photometric results provided in connection with thepresent study represent the first part of an effort which is concernedwith the presentation of UBVRI photoelectric photometric standard starsin the magnitude range from 7 to 17 over as broad a range in color aspossible. All of the photometric observations were made with a 31034type photomultiplier used in a pulse counting mode. Some 15 to 25standard stars chosen from Cousins' lists (1973, 1976) in the E-regionswere observed with an 0.4-m telescope each night along with the programstars. UBVRI standard stars were observed periodically throughout thenight. Observations with a 0.9-m telescope were also conducted. TheUBVRI photoelectric observations take into account 223 stars.
Spectral classifications for Landolt's celestial equatorial standard stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1979AJ.....84..783D&db_key=AST
Equatorial UBVRI photoelectric sequences From 1335 BVRI observations of 189 stars in selected areas 92-115,Landolt's (1973) network of faint UBV standards has been extended to RI. Of these stars, 173 have four or more observations. The (U-B) valuesof Landolt are adopted, and a well-observed equatorial faint-starnetwork is presented on the Johnson UBVRI photometric system.

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观测天体数据

星座:	天鷹座
右阿森松:	19^h38^m47.15^s
赤纬:	+00Â°36'20.4"
视星:	8.312
距离:	301.205 天文距离
右阿森松适当运动:	5.7
赤纬适当运动:	-9.2
B-T magnitude:	10.528
V-T magnitude:	8.495

目录:

适当名称
HD 1989	HD 185378
TYCHO-2 2000	TYC 479-1337-1
USNO-A2.0	USNO-A2 0900-15992607
HIP	HIP 96629

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