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HD 8481


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MK classification and photometry of stars used for time and latitude observations at Mizusawa and Washington
MK spectral classifications are given for 591 stars which are used fortime and latitude observations at Mizusawa and Washington. Theclassifications in the MK system were made by slit spectrograms ofdispersion 73 A/mm at H-gamma which were taken with the 91 cm reflectorat the Okayama Astrophysical Observatory. Photometric observations in UBV were made with the 1-meter reflector at the Flagstaff Station of U.S.Naval Observatory. The spectrum of HD 139216 was found to show a strongabsorption line of H-beta. The following new Am stars were found:HD9550, 25271, 32784, 57245, 71494, and 219109. The following new Apstars were found: HD6116, 143806, 166894, 185171, and 209260. The threestars, HD80492, 116204, and 211376, were found to show the emission inCaII H and K lines.

Photoelectric UBV photometry for 317 PZT and VZT stars
UBV data were taken of 317 stars to fill gaps in photoelectric recordsneeded for establishing a terrestrial reference frame for earthorientation purposes. The study supplied the magnitudes and colors andaided in identifying nearby stars without trigonometric parallaxes. Thesurvey averaged over three observations of each object. A complete tableof the V, B-V, U-B and number of observations of each object isprovided.

Preliminary catalog of the declinations of 96 stars of the international program, compiled from Kitab PZT observations
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观测天体数据

星座:仙女座
右阿森松:01h24m30.86s
赤纬:+39°01'30.1"
视星:7.856
距离:175.439 天文距离
右阿森松适当运动:5.8
赤纬适当运动:-15.1
B-T magnitude:9.175
V-T magnitude:7.965

目录:
适当名称   (Edit)
HD 1989HD 8481
TYCHO-2 2000TYC 2813-1613-1
USNO-A2.0USNO-A2 1275-00840185
HIPHIP 6578

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