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Luna 25

NSSDCA ID: LUNA-25

Description

Luna 25, also designated the Luna-Glob-Lander, is a Russian lunar lander mission currently scheduled for launch on 13 July 2023. It is targeted to the south polar region of the Moon. There are two primary scientific objectives of the mission: to study composition of the polar regolith, and to study the plasma and dust components of the lunar polar exosphere.

The lander has a four-legged base containing the landing rockets and propellant tanks, an upper compartment holds the solar panels, communication equipment, on-board computers, and most of the science apparatus. Dry mass is about 800 kg, and it is expected to have roughly 950 kg of propellant at launch. The lander has a 1.6 meter-lomg Lunar Robotic Arm (LRA, of Lunar Manipulator Complex) to remove and collect the surface regolith to depths of 25 cm. The LRA is equipped with a scoop (175 cubic cm volume) and a sample acquisition tool, a 4.7 cm long tube with an internal diameter of 1.25 cm. The arm has four degrees of freedom / rotations: azimuthal, shoulder, elbow, and wrist/scoop. Total mass of the LRA is 5.5 kg, it uses 30 W nominal, and 50 W maximum power.

There are six science instruments. ADRON-LR is a gamma-ray and neutron spectrometer to study the surface regolith. ARIES-L detects charged particles and neutrals in the polar exosphere. LIS-TV-RPM, an infra-red spectrometer, measures surface water and OH and is mounted on the LRA. The LASMA-LR mass spectrometer will measure composition of regolith samples (1 - 2 cubic cm) from the LRA using laser ablation. The PML detector will study dust in the polar exosphere. STS-L is a panoramic and local imaging system. Data transmission rates back to Earth are planned to be 4 Mbits/sec.

Luna 25 is currently scheduled to launch no earlier than 13 July 2023. Launch will be on a Soyuz-2 Fregat into Earth orbit. It will fire the Fregat again to go into a lunar transfer orbit and from lunar orbit it will drop down to the surface. Landing will be in the region of the lunar south pole, the main landing site is at 69.545 S, 43.544 E, north of Boguslavsky crater. The reserve landing site is at 68.773 S and 21.21 E, southwest of Manzini crater. Both coordinate points are centers of 15 x 30 km landing ellipses. The lander is expected to operate on the lunar surface, studying surface regolith and exospheric dust and particles, for one year.

Image credit: N.P.O. Lavochkin (www.laspace.ru), all rights reserved.

Alternate Names

  • Luna-Glob-1
  • Luna-Glob-Lander
  • Luna25

Facts in Brief

Launch Date: 
Launch Vehicle: Soyuz-Fregat
Launch Site: ,
Mass: 800 kg

Funding Agency

  • Russian Space Agency (Russia)

Discipline

  • Planetary Science

Additional Information

Questions and comments about this spacecraft can be directed to: Dr. David R. Williams

 

Personnel

NameRoleOriginal AffiliationE-mail
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