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Kosmos 305

A Ye-8-5 model in the Museum of Cosmonautics, Moscow.
Operator	Soviet space program
COSPAR ID	1969-092A
SATCAT no.	4150
Mission duration	2 days
Spacecraft properties
Spacecraft type	Ye-8-5
Manufacturer	GSMZ Lavochkin
Launch mass	5,600 kg (12,300 lb)
Start of mission
Launch date	October 22, 1969, 14:09:00 (1969-10-22UTC14:09Z) UTC
Rocket	Proton-K/D
Launch site	Baikonur 81/24
End of mission
Disposal	Launch failure
Decay date	October 24, 1969
Orbital parameters
Reference system	Geocentric
Perigee altitude	182 km (113 mi)
Apogee altitude	208 km (129 mi)
Inclination	51.4°
Period	88.4 min
Luna programme← Kosmos 300Luna 1970A → Kosmos (satellites)← Kosmos 304Kosmos 306 →

Kosmos 305 (Russian: Космос 305 meaning Cosmos 305) (Ye-8-5 series) was the fifth Soviet attempt at an uncrewed lunar sample return. It was probably similar in design to the Luna 16 spacecraft. It was launched, on a Proton rocket, on October 22, 1969. The engines on the Block D upper stage failed, terminating the mission. This left the spacecraft stranded in Earth orbit. It re-entered within two days.

References

1. "NASA NSSDC Master Catalog - Cosmos 305". Retrieved 25 May 2024.
2. ^ "Luna Ye-8-5 - Encyclopedia Astronautica". Retrieved 25 May 2024.
3. "Luna - Exploring the Moon". orbitalfocus.uk. Retrieved February 23, 2023.
4. Siddiqi, Asif A. (2018). "Kosmos 305 [Luna]" (PDF). Beyond Earth: A Chronicle of Deep Space Exploration, 1958-2016. NASA History Program Office: 92. Retrieved February 23, 2023.

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