Key facts
- Operator
- Soviet Academy of Sciences
- Cospar id
- 1978-084A, 1978-084D
- Satcat number span no
- 11020, 11027
- Mission duration
- Travel: 3 months and 16 days, Lander: 95 minutes
- Spacecraft
- 4V-1
- Spacecraft type
- 4V-1 No. 360
- Bus
- 4MV
- Launch mass
- 4,447.3 kg (9,805 lb)
- Bol mass
- 4,715 kg (10,395 lb)
- Landing mass
- 760 kg (1,680 lb)
- Dimensions
- 2.7 m × 2.3 m × 5.7 m (8.9 ft × 7.5 ft × 18.7 ft)
- Launch date
- September 9, 1978 ( 1978-09-09 ) , 03:25:39 UTC
- Rocket
- Proton-K /D-1 8K82K
- Launch site
- Baikonur 81/23
- Last contact
- February 1, 1980
- Reference system
- Geocentric
- Regime
- Low Earth
- Semi major axis
- 6,569 kilometers (4,082 mi)
via Wikipedia infobox
Wikidata facts
- Instance of
- space probe
- Part of
- Venera
- Mass
- 4715
- Image
- Venus 12.jpg
- Significant event
- rocket launch
Show 8 more facts
- Commons category
- Venera 11
- space launch vehicle
- Proton-K
- UTC date of spacecraft launch
- 1978-09-09
- start point
- Baikonur Cosmodrome
- located on astronomical body
- Venus
- UTC date of spacecraft landing
- 1978-12-25
- location of landing
- Venus
- end of work period
- 1980-02-01
Sources (2)
via Wikidata · CC0
~6 min read
Encyclopedic overview
The Venera 11 (Russian: Венера-11 meaning Venus 11) was a Soviet uncrewed space mission which was part of the Venera program to explore the planet Venus. Venera 11 was launched on 9 September 1978 at 03:25:39 UTC.
Separating from its flight platform on December 23, 1978 the lander entered the Venus atmosphere two days later on December 25 at 11.2 km/s. During the descent, it employed aerodynamic braking followed by parachute braking and ending with atmospheric braking. It made a soft landing on the surface at 06:24 Moscow Time (03:24 UT) on 25 December after a descent time of approximately 1 hour. The touchdown speed was 7 to 8 m/s. Information was transmitted to the flight platform for retransmittal to Earth until it moved out of range 95 minutes after touchdown. Landing coordinates are 14°S 299°E / 14°S 299°E / -14; 299.
Excerpted from Wikipedia’s “Venera 11” article, available under the CC BY-SA 4.0 licence.
On the map
2 mapped locations