ISRO's Aditya-L1 completes first halo orbit around Sun-Earth L1 point
Bengaluru (PTI): India’s first solar mission Aditya-L1 spacecraft completed its first halo orbit around the Sun-Earth L1 point on Tuesday, ISRO said.
The space agency said its station-keeping manoeuvre on Tuesday ensured its seamless transition into the second halo orbit.
The Aditya-L1 mission, which is an Indian solar observatory at Lagrangian point L1, was launched on September 2, 2023 and was inserted in its targeted halo orbit on January 6, 2024.
According to ISRO, Aditya-L1 spacecraft in the halo orbit takes 178 days to complete a revolution around the L1 point.
During its travel in the halo orbit, Aditya-L1 spacecraft will be subjected to various perturbing forces that will cause it to depart from the targeted orbit, the space agency said.
"Aditya-L1 underwent two station-keeping manoeuvres on February 22 and June 7, respectively, to maintain this orbit. Today's third station-keeping manoeuvre has ensured that its travel continued in the second halo orbit path around L1,” ISRO said.
The agency explained that Aditya L1's journey around Sun-Earth L1 Lagrangian point involves modeling of complex dynamics.
The understanding of various perturbing forces acting on the spacecraft helped in determining the trajectory accurately and planning precise orbit manoeuvres, it added.
"With today's manoeuvre, the state-of-the-art flight dynamics software developed in-house at URSC-ISRO for the Aditya-L1 missions stands fully validated," ISRO said.
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West Bengal Speaker administers oath to 2 TMC MLAs, Raj Bhavan calls its constitutional impropriety
Kolkata, Jul 5: West Bengal Assembly Speaker Biman Banerjee administered the oath to two newly elected TMC MLAs on Friday, defying the Governor's directive to appoint Deputy Speaker Asish Banerjee for the task, sparking accusations of constitutional impropriety from Raj Bhavan.
The incident led Governor C V Ananda Bose to send a report to President Droupadi Murmu, alleging that the Speaker's actions violated constitutional norms.
According to a Raj Bhavan official, Bose wrote to the President, asserting that the administration of oaths to the MLAs by the Bengal Speaker at the state Assembly was unconstitutional.
The special one-day session of the assembly adjourned sine die after the legislators were sworn in.
The swearing in of the two TMC MLAs - Rayat Hossain Sarkar from Bhagwangola in Murshidabad district and Sayantika Bandopadhyay from Baranagar on the northern outskirts of Kolkata - ended the month-long impasse between Raj Bhavan and the assembly over the venue of the ceremony and the administering authority.
In a sudden turn of events on Thursday evening, Governor Bose authorised Deputy Speaker Asish Banerjee to administer the oath in the assembly on Friday, retracting his earlier stance that the MLAs would be sworn in at Raj Bhavan.
However, during the one-day special session, Deputy Speaker Asish Banerjee declined to administer the oath, citing that it would be inappropriate in the presence of the Speaker.
"It is against the norms for the Deputy Speaker to administer the oath when the Speaker is present in the Chair. It would disrespect the Speaker's position," he said in the assembly.
Responding to the Deputy Speaker's appeal, Biman Banerjee called the MLAs to the floor and administered the oath himself.
TMC members of the assembly cheered with 'Jai Bangla' slogans as the MLAs took their oaths.
Asish Banerjee defended his action, saying, "I followed the rules of the assembly. According to Rule 5 of the assembly proceedings, if the Speaker is present, I cannot administer the oath."
Later in the afternoon, Raj Bhavan posted on social media that a report is being sent to the President highlighting the constitutional impropriety of the Speaker administering the oath instead of the Deputy Speaker, as appointed by the Governor.
"The constitutional transgression has been done in spite of Hon’ble Governor appointing Deputy Speaker as the person before whom the two newly elected MLAs shall make and subscribe an oath or affirmation," a statement from Raj Bhavan said.
In an apparent reference to Rule 5 of the assembly proceedings mentioned by the Speaker and his deputy, the Raj Bhavan referred to constitutional provisions and wondered whether any rule of the assembly can be above it.
"It is elementary knowledge that the Constitution supersedes any assembly rule," a Raj Bhavan statement read.
A Raj Bhavan official informed PTI that in his letter to President Murmu, the Governor also stated that the Speaker's actions were a violation of the Constitution.
In response to the Governor's letter, Speaker Biman Banerjee asserted, "The Governor does not have the authority to dismiss me. I have already informed the President about the situation and sought her intervention."
The Speaker had previously sought the President's intervention in the matter, accusing the Governor of turning it into an ego battle.
State Parliamentary Affairs Minister Sobhandeb Chattopadhyay insisted that no House rules were violated.
"Rule 5 of the Assembly proceedings was followed. The Governor appointed the deputy speaker, who then recused himself citing Rule 5, as administering the oath in the Speaker's presence would have been disrespectful."
Meanwhile, the BJP legislative party did not attend the session, citing there was no prior notice.
The two legislators had been staging a sit-in on the assembly premises in protest against the Governor's earlier stance, demanding to be sworn in by the Speaker within the assembly premises, in line with House conventions.
"We are very pleased to have been sworn in within the assembly. Due to the delay in our oath-taking, we were unable to serve our constituencies as MLAs," said Bandopadhyay, a former actor-turned politician.
The relationship between the West Bengal Governor and the TMC government has been contentious since he assumed office in November 2022, resulting in numerous disputes on various issues.
