China's Tianwen 1 enters Mars' polar orbit

Published February 15, 2021
China’s space agency released video footage from its spacecraft circling Mars on Friday, two days after it successfully entered the planet’s orbit in Beijing’s latest ambitious space mission. — AFP/File
China’s space agency released video footage from its spacecraft circling Mars on Friday, two days after it successfully entered the planet’s orbit in Beijing’s latest ambitious space mission. — AFP/File

China's Tianwen 1 robotic probe entered the orbit above Mars' polar regions on Monday, moving closer to the red planet, the China National Space Administration said.

The spacecraft activated its 3,000-Newton-thrust orbital-control engine at 5pm to conduct an orbital plane change maneuver to enter polar orbit with a perigee of about 265 kilometres above the red planet, the administration said in a brief statement.

Next, the probe will carry out several orbital adjustment operations to move itself into a parking orbit.

In parking orbit, it will make observations and investigations of the preset landing site.

Before the latest maneuver, Tianwen 1 was travelling around an elliptical Martian orbit with a perigee of about 400km after its arrival in Mars' gravitational field on Wednesday night, becoming the first Chinese spacecraft to reach the planet.

Tianwen 1, the country's first independent Mars mission, was launched by a Long March 5 heavy-lift carrier rocket on July 23, 2020 from the Wenchang Space Launch Centre in Hainan province, kicking off the nation's planetary exploration programme.

The 5-metric tonne probe, which consists of two major parts — the orbiter and the landing capsule — flew for 202 days and about 475-million-km on its journey to Mars. Its average flight speed was about 100,000km per hour.

During its journey, the spacecraft conducted four midcourse corrections and a deep-space orbital maneuver to make sure it was always precisely aimed at Mars.

The Tianwen 1 mission's ultimate goal is to land a rover in May or June on the southern part of Mars' Utopia Planitia — a large plain within Utopia, the largest recognised impact basin in the solar system — to conduct scientific surveys.

Tianwen 1 is the world's 46th Mars exploration mission since October 1960, when the former Soviet Union launched the first Mars-bound spacecraft. Only 18 of those missions were successful.


This article originally appeared on China Daily and has been reproduced with permission.

Opinion

Editorial

IMF package
Updated 28 Jan, 2023

IMF package

While it is crucial to seek immediate IMF funding to shore up its reserves, the govt shouldn’t focus only on short-term relief.
Dar unpegged
28 Jan, 2023

Dar unpegged

IT is over. Nearly four months after Ishaq Dar descended on the cash-strapped economy with some decidedly outlandish...
Lurking hazards
28 Jan, 2023

Lurking hazards

OVERSIGHT of illegal industrial activity occurring within residential areas in the country is weak, especially in...
Election time
Updated 27 Jan, 2023

Election time

There are concerns whether the ECP will be sufficiently able to protect the integrity of elections if they are held under partisan governments.
SCO invite
27 Jan, 2023

SCO invite

THOUGH India’s invitation to Pakistan to attend the Shanghai Cooperation Organisation events in Goa later this ...
Call to arms
27 Jan, 2023

Call to arms

ONE way the state abdicates responsibility in Pakistan is by farming out its functions to the private sector. In ...