Mars Polar Lander

Overview

Destination: Heliocentric N/A
Mission: Robotic Exploration

Heliocentric N/A Space Launch Complex 17B Cape Canaveral, FL, USA

The Mars Polar Lander, also known as the Mars Surveyor '98 Lander, was a 290-kilogram robotic spacecraft lander launched by NASA on January 3, 1999 to study the soil and climate of Planum Australe, a region near the south pole on Mars. It formed part of the Mars Surveyor '98 mission. On December 3, 1999, however, after the descent phase was expected to be complete, the lander failed to reestablish communication with Earth. A post-mortem analysis determined the most likely cause of the mishap was premature termination of the engine firing prior to the lander touching the surface, causing it to strike the planet at a high velocity.

Delta 7425-9.5

Family: Delta
Configuration: 7425-9.5

Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 variants ("Light" and "Heavy"). The rocket flew its final mission ICESat-2 on 15 September 2018, earning the launch vehicle a streak of 100 successful missions in a row, with the last failure being GPS IIR-1 in 1997.

Specifications
  • Stages
    4
  • Length
    39.0 m
  • Diameter
    2.44 m
  • Fairing Diameter
    2.44 m
  • Launch Mass
    170 T
  • Thrust
    3020 kN
Family
  • Name
    Delta 7425-9.5
  • Family
    Delta
  • Variant
    7425-9.5
  • Alias
  • Full Name
    Delta 7425-9.5
Payload Capacity
  • Launch Cost
  • Low Earth Orbit
  • Geostationary Transfer Orbit
  • Direct Geostationary
  • Sun-Synchronous Capacity

McDonnell Douglas

McDonnell Douglas

(MDC)

Successes: 369 Failures: 37 Pending: 0

Agency Type: Commercial

WIKI

Cape Canaveral, FL, USA

Space Launch Complex 17B


Long March 6
Success
1 day, 7 hours ago
Jilin-1 High Resolution 03D-09, 35 to 43 & Infrared A01 to 06
Launch Complex 16 - Taiyuan, People's Republic of China

16 new Earth observation satellites for the Jilin-1 commercial Earth observation satellites constellation.


Falcon 9
Success
1 day, 10 hours ago
Starlink Group 4-26
Launch Complex 39A - Kennedy Space Center, FL, USA

A batch of 52 satellites for Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Soyuz 2.1b/Fregat-M
Success
2 days, 6 hours ago
Khayyam & rideshare
31/6 - Baikonur Cosmodrome, Republic of Kazakhstan

Khayyam, also known as Project 505, is a Russian built Earth observation satellite for Iran. The satellite is built by VNIIEM and NPK Barl on a curre…


Ceres-1
Success
2 days, 8 hours ago
Taijing-1-01 & 02
Unknown Pad - Jiuquan, People's Republic of China

Two commercial Earth observation satellites built by Minospace.


SSLV
Failure
4 days, 8 hours ago
SSLV Demo 1
Satish Dhawan Space Centre First Launch Pad - Sriharikota, Republic of India

First test flight of Indian SSLV (Small Satellite Launch Vehicle).


Falcon 9
Success
6 days, 13 hours ago
Danuri (KPLO - Korean Pathfinder Lunar Orbiter)
Space Launch Complex 40 - Cape Canaveral, FL, USA

Lunar orbiter designed by the Korea Aerospace Research Institute (KARI) to demonstrate technologies, survey lunar resources and produce a topographic…


Long March 2F
Success
6 days, 20 hours ago
Chinese Reusable Space Vehicle
Launch Area 4 (SLS-1 / 921) - Jiuquan, People's Republic of China

Note: Launch time is approximate. Probable reflight of the Chinese spaceplane capable of returning to Earth, which flew in orbit September 4 - 6, …


New Shepard
Success
6 days, 22 hours ago
NS-22
West Texas Suborbital Launch Site/ Corn Ranch - Corn Ranch, USA

NS-22 is the sixth crewed New Shepard flight, carrying six passengers.


Atlas V 421
Success
1 week ago
SBIRS GEO-6
Space Launch Complex 41 - Cape Canaveral, FL, USA

Sixth geosynchronous satellite of the Space Based Infrared System program (SBIRS), providing capabilities for early missile warning and missile defen…


Electron
Success
1 week ago
NROL-199 (RASR-4)
Rocket Lab Launch Complex 1B - Onenui Station, Mahia Peninsula, New Zealand

Classified payload for the US National Reconnaissance Office (NRO).