1972-076B
The P72-1 satellite, nicknamed Radsat, was launched on 1972 Oct 2 by Atlas Burner 2A from Vandenberg. A passive radar calibration target, Radcat, was also carried on the launch. P72-1 was built by Boeing. The satellite had a mass of 566 kg and was 2.1m long and 1.4m in diameter. The ARPA-501 instrument returned data on the gamma ray background and X-rays from the earth. ML-101 validated a new thermal coating later used on DSCS.
The satellite was in a noon-midnight 11:49 LTDN orbit.
Launch lists indicate this was probably an Atlas Burner 2. A Thiokol motor list shows a Star 26 (for a Burner 2A) launched on this date, but I think it may be an error as it omits the Oct 1971 Thor Burner 2A launch which we are confident had a Star 26.
| P72-1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1972 Oct 2 | 2011? | Launch by Atlas Burner 2 | V BMRS A1 |
| T+2:18?? BECO | |||
| T+4:37?? SECO | |||
| T+4:54?? VECO | |||
| 2016 | T+5:00? Atlas sep | -1250 x 740? x 98.4 | |
| 2017 | Coast | ||
| 2016 | T+5:00? | ||
| 2026? | Star 37B burn, 42s | -1250? x 740 x 98.5 | |
| 2029? | Star 37B sep | ||
| 99.7 732 x 753 x 98.5 | |||
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