from where was it launched?
Site No.1/5, at the 5th Tyuratam range, in Kazakh SSR (now known as the Baikonur Cosmodrome)
Sputnik 1
Sputnik 1 was launched during the International Geophysical Year from Site No.1/5, at the 5th Tyuratam range, in Kazakh SSR (now known as the Baikonur Cosmodrome). 
who launched the first man made satellite and when The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957. who designed this satellite? Mikhail S. Khomyakov what was its launching mission? UNANSWERABLE does it have any replicas? Yes, at least two vintage duplicates of Sputnik 1 exist, built apparently as backup units.
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Sputnik 1 [SEP] Introduction
The satellite travelled at about , taking 96.2 minutes to complete each orbit. It transmitted on 20.005 and 40.002 MHz, which were monitored by radio operators throughout the world. The signals continued for 21 days until the transmitter batteries ran out on 26 October 1957. Sputnik burned up on 4 January 1958 while reentering Earth's atmosphere, after three months, 1440 completed orbits of the Earth, and a distance travelled of about .