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HD 161489


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SAO stars with infrared excess in the IRAS Point Source Catalog
We have undertaken a search for SAO stars with infrared excess in theIRAS Point Source Catalog. In contrast to previous searches, the entireIRAS (12)-(25)-(60) color-color diagram was used. This selection yieldeda sample of 462 stars, of which a significant number are stars withcircumstellar material. The stars selected can be identified aspre-main-sequence stars, Be stars, protoplanetary systems, post-AGBstars, etc. A number of objects are (visual) binary stars.Characteristic temperatures and IR excesses are calculated and theirrelations to spectral type are investigated.

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

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观测天体数据

星座:人馬座
右阿森松:17h47m03.72s
赤纬:-29°14'54.5"
视星:9.288
右阿森松适当运动:-18.5
赤纬适当运动:-42.2
B-T magnitude:9.948
V-T magnitude:9.343

目录:
适当名称
HD 1989HD 161489
TYCHO-2 2000TYC 6840-1283-1
USNO-A2.0USNO-A2 0600-28710074
HIPHIP 87038

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