Kosmos-300 — launch
Date in UTC
Kosmos 300 (Ye-8-5 series) was the fourth Soviet attempt at an uncrewed lunar sample return. It was probably similar in design to the later Luna 16 spacecraft. It was launched, on a Proton rocket, on September 23, 1969. The mission was a failure. The engines on the Block D upper stage failed due to an oxidizer leak, leaving the spacecraft to burn up in Earth's atmosphere.
Wikipedia: https://en.wikipedia.org/wiki/Kosmos_300. Original timeline Wikipedia link: https://en.wikipedia.org/wiki/Cosmos_program. Related NASA reference: https://nssdc.gsfc.nasa.gov/planetary/chronology.html#1969. Description adapted from Wikipedia contributors (CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/).
- Category
- Launches and Flight Tests
- Type
- Orbital launch
- Subjects
- Space transportation
- Mission
- Kosmos-300
- Organization
- Strategic Rocket Forces
- Vehicle
- Proton-K/D
- Location
- NIIP-5, Baykonur, Kazakstan
- Country
- SU
- Outcome
- Partially successful
Context and qualifications
Launch code: OF40. Source references: NK9810-25; NK9810-25. Details uncertain
Sources and attribution
- Jonathan McDowell — General Catalog of Artificial Space Objects (opens in a new tab) — Data from GCAT (J. McDowell, planet4589.org/space/gcat), CC BY 4.0. Adapted into anniversary records. (CC BY 4.0)
- Wikipedia — Cosmos 300 (opens in a new tab) — Adapted from Wikipedia contributors; selected sentences retained and edited for length, reference markers and pronunciation glosses. CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/ Article and edit history: https://en.wikipedia.org/wiki/Kosmos_300 (CC BY-SA 4.0)
- Original Wikipedia link from NSE timeline (opens in a new tab) (CC BY-SA 4.0)
- Timeline of Space Exploration Missions 1957 to 2031 (opens in a new tab)
- NASA — Cosmos 300 (opens in a new tab)
- NASA NSSDCA — Cosmos 300 (opens in a new tab)