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Artemis II Update-5: Perigee raise burn complete, translunar injection burn next

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NASA confirmed the Artemis II crew completed the perigee raise burn on April 2, firing Orion’s engine for 43 seconds to refine its orbit around Earth. The maneuver placed the spacecraft into a stable high Earth orbit ahead of a planned translunar injection later the same day. Mission managers will review system performance before approving the burn that would send astronauts toward the Moon for the first time since 1972.

The Artemis II crew woke to music and a tightly timed task. Minutes later, they were watching their spacecraft reshape its path around Earth.

Inside Orion, the capsule named Integrity, astronauts monitored systems as the engine fired for just over 40 seconds. The burn was brief. Its impact on the mission trajectory was not.

The maneuver marked another step in a sequence designed by the National Aeronautics and Space Administration to prepare astronauts for a return to deep space operations.

Perigee raise burn details and Orion orbit adjustment

The perigee raise burn began after a scheduled wake-up at 7:06 a.m. Eastern Time, when mission control in Houston signaled the crew with the song “Sleepyhead” by Young and Sick.

Shortly after, Orion’s service module main engine ignited. It burned for 43 seconds, increasing the spacecraft’s perigee, the lowest point in its orbit around Earth.

This adjustment refined Orion’s trajectory, placing it into a stable high Earth orbit. The new orbit aligns with the spacecraft’s planned path for departure toward the Moon.

Engineers design these burns to test propulsion precision under real mission conditions. Small timing or thrust variations can significantly alter a spacecraft’s trajectory over long distances.

Following the maneuver, astronauts returned to a rest cycle lasting about four and a half hours, part of a schedule structured to balance workload and recovery during the mission’s early phase.

Trajectory for Artemis II, NASA’s first flight with crew aboard SLS, Orion to pave the way for long-term return to the Moon, missions to Mars

Translunar injection burn timing and mission approval process

Attention now shifts to the next and more consequential maneuver, the translunar injection burn.

Mission management teams are scheduled to meet later in the day to assess spacecraft health, propulsion data, and navigation accuracy. Their approval is required before proceeding.

If cleared, the translunar injection burn is set for 7:49 p.m. Eastern Time. The maneuver will last five minutes and 49 seconds and is expected to increase Orion’s velocity by 1,274 feet per second.

That acceleration would push the spacecraft out of Earth orbit and onto a trajectory toward the Moon. It would mark the first time humans leave low Earth orbit since the Apollo era, which concluded with the final Moon mission in 1972.

Flight controllers will monitor engine performance and guidance systems throughout the burn. Navigation data must remain within tight tolerances to ensure Orion stays aligned with its intended path.

The Artemis II mission is designed as a test flight, but each milestone carries operational weight. With the perigee burn complete, the next decision point will determine whether the crew begins its journey beyond Earth orbit.

Also Read:

Artemis II Update-4: Crew completes proximity test, perigee raise burn up next

Artemis II Update-3: Apogee Raise burn complete, Crew prepares critical Proximity Test

Artemis II Crew and Ground Teams Successfully Troubleshoot Orion’s Toilet Glitch

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NASA confirmed the Artemis II crew resolved a toilet system fault aboard the Orion spacecraft on April 2 while in Earth orbit. The issue, first detected as a blinking fault light on April 1, was addressed through coordinated troubleshooting with mission control in Houston. The fix comes ahead of a scheduled perigee raise burn, a maneuver that will adjust Orion’s orbit for future deep space operations.

A minor but essential system aboard NASA’s Artemis II spacecraft briefly drew attention this week. It was not propulsion or navigation. It was the toilet.

Astronauts aboard Orion, the capsule named Integrity, reported a blinking fault light tied to the waste management system on April 1. Within hours, engineers on the ground and the crew in orbit worked through the problem together. By the next mission update, the system was back to normal operation.

The episode highlights how even routine spacecraft functions demand precision during crewed missions led by the National Aeronautics and Space Administration.

Orion spacecraft toilet issue and in-flight troubleshooting

The issue first surfaced ahead of a planned apogee raise burn, when the crew noticed a blinking fault indicator linked to Orion’s toilet system. Such warning signals are designed to flag irregularities early, even when the system continues functioning.

NASA’s mission control team at the Johnson Space Center in Houston began reviewing telemetry immediately. Engineers assessed system data while communicating directly with the astronauts to isolate the cause.

The troubleshooting process involved both software diagnostics and procedural checks inside the spacecraft. The agency did not report any hardware damage or safety risk tied to the issue.

By April 2, NASA confirmed that normal functionality had been restored. The resolution ensured that one of the spacecraft’s life-support subsystems remained fully operational as the mission continued.

Waste management systems in microgravity rely on airflow, pressure control, and precise mechanical components. Even minor anomalies require immediate attention, as they can affect crew comfort and long-duration mission readiness.

A view of the Earth’s horizon from NASA’s Orion spacecraft as it orbits above the planet during the first hours of the Artemis II test flight. NASA astronauts Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialist Christina Koch, and CSA (Canadian Space Agency) astronaut Mission Specialist Jeremy Hansen, launched at 6:35 p.m. EDT on Wednesday, April 1, 2026, on an approximately 10-day mission around the Moon and back to Earth.
NASA 

Perigee raise burn timing and mission trajectory planning

With the issue resolved, the Artemis II crew is preparing for the next major step in the mission timeline. The perigee raise burn is scheduled after a planned rest period.

Perigee refers to the lowest point of a spacecraft’s orbit around Earth. Raising it changes the orbital shape, making it more stable and better suited for future maneuvers.

This burn follows an earlier apogee raise maneuver, which increased Orion’s highest orbital point. Together, the two burns define the spacecraft’s initial orbit and test its propulsion system under operational conditions.

NASA scheduled a four-hour rest period for the crew before the maneuver. Astronauts are set to wake at 7 a.m. Eastern Time on April 2 to begin preparations. After completing post-burn procedures, they will return to a second sleep cycle later in the morning.

The sequence reflects the structured rhythm of human spaceflight, where operational tasks alternate with carefully timed rest to maintain performance.

The Artemis II mission continues to build toward its broader objective: validating systems for future missions that will carry astronauts beyond Earth orbit and toward the Moon.

Also Read:

Artemis II Mission Launch: NASA Sends Crew on First Moon Flyby in 50 Years

Artemis II Update-1: Orion Completes Proximity Operations, Perigee Burn Next