India’s Chandrayaan-2 avoids collision with NASA’s moon orbiter

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Chandrayaan-2 avoids collision with NASA's
Chandrayaan-2 avoids collision with NASA's

Chennai, Nov 17 | For the first time in its space exploration mission, an evasive measure was carried out recently to avoid the collision between Chandrayaan-2 Orbiter and US’ Lunar Reconnaissance Orbiter (LRO), Indian Space Research Organisation (ISRO) said.

According to ISRO, Chandrayaan-2 Orbiter and National Aeronautics and Space Administration’s (NASA) LRA were predicted to come very close to each other on October 20, 2021 near the Lunar North pole.

Calculations by ISRO and NASA’s Jet Propulsion Laboratory (JPL) showed that the radial separation between the two spacecraft would be less than 100 m and the closest approach distance would be only about three km on October 20, 2021 at 11.15 am Indian time.

ISRO and NASA agreed that the situation warranted a collision avoidance manoeuvre and as per the mutual agreement between the two agencies Chandrayaan-2 Orbiter was moved away on Oct 18, 2021 ensuring a sufficiently large radial separation at the next closest conjunction between the two spacecraft.

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According to ISRO, after orbit determination of Chandrayaan-2 Orbiter post-manoeuvre tracking data, it was reconfirmed that there would be no further close conjunctions with LRO in the near future with the achieved orbit.

Both the orbiters orbit the moon in a nearly polar orbit and hence, both the spacecraft come close to each other over the Lunar poles.

The Indian Orbiter has been going around the moon for the past two years.

It is common for satellites in earth orbit to undergo collision avoidance manoeuvres to mitigate collision risk due to space objects including space debris and operational spacecraft.

In 2020, India’s 700 kg cartography satellite Cartosat-2F and Russia’s 450 kg Kanopus-V satellite had a near miss in outer space, said Roscosmos, Russia’s state space corporation.

Both the earth observation satellites were as close as 224 metres.

Kanopus is an Earth observation with a launch mass of 450 kg mini-satellite mission of the Russian Space Agency.

Source: IANS

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Share Market Closing Bell: Nifty ends around 15,800, Sensex tanks 1,416 pts

On the back of Global Clues and SGX, Nifty opened on a gap down note & continued downside momentum throughout the day and closed the session at 15809.40 level with a loss of 430.90. However, Bank nifty closed the session at 33315.65 level with a loss of 848.05 points.

India VIX closed at 24.56 up by 10.13% which is a sign of more volatility in upcoming sessions.47 stocks out of NIFTY 50 closed in RED which suggest broad based selling. All the sectoral indices were ended in the red with metal, IT indices down 4-5 percent.

Despite one way fall, Stocks like ITC, DRREDDY, POWERGRID were the top gainers, While WIPRO, HCLTECH, INFY, TCS & TECHM were prime losers. On a daily chart, Nifty has formed a Bearish candle which indicates downside momentum for an upcoming session. Moreover, Nifty is showing support from horizontal line i.e., 15750 levels which is make or break level. In addition, Nifty has been sustained above the 21-Monthly Moving Average which indicates a bounce back from lower levels can be seen.

However, the momentum indicators MACD & Stochastic were trading with a negative crossover & trading in oversold zone which is a sign of sideways to negative trend in Nifty. The Nifty may find Strong support around 15700 levels, breaching below it can show more downside till 15500 levels while on the upside 16000 may act as an immediate hurdle. On the other hand, Bank nifty has support at 32800 levels while resistance at 34500 levels.

Palak Kothari
Research Associate
Choice Broking

Source: Choice India

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