October 8, 2024

Mercury Ahead! Spacecraft Will Swoop by the Planet in Exciting Gravity Assist Maneuver

The mission comprises 2 science orbiters which will be delivered into complementary orbits around the world by the Mercury Transfer Module in 2025. The ESA-led Mercury Planetary Orbiter and the JAXA-led Mercury Magnetospheric Orbiter, Mio, will study all elements of this mystical inner world from its core to surface area processes, magnetic field and exosphere, to much better comprehend the origin and development of a planet near its moms and dad star.
BepiColombo will use nine planetary flybys in overall: one at Earth, two at Venus, and six at Mercury, together with the spacecrafts solar electric propulsion system, to help steer into Mercury orbit.
On track for Mercury slingshot
Timeline of flybys throughout BepiColombos 7.2 year journey to Mercury, beginning with the opening of the almost two month long launch window in October 2018. Credit: ESA
Gravitational flybys need incredibly exact deep-space navigation work, ensuring that the spacecraft is on the appropriate approach trajectory.
One week after BepiColombos last flyby on August 10, a correction maneuver was performed to nudge the craft a little for this first flyby of Mercury, targeting an elevation of 200 km. At present, the craft is predicted to pass the innermost world at 198 km, and small modifications can quickly be made with solar electric propulsion maneuvers after the swing-by. As BepiColombo is more than 100 million km far from Earth, with light taking 350 seconds (about six minutes) to reach it, being on target to within just two kilometers is no easy accomplishment.
” It is since of our impressive ground stations that we understand where our spacecraft is with such accuracy. With this info, the Flight Dynamics group at ESOC understand simply how much we need to steer, to be in the right place for Mercurys gravitational assist,” explains Elsa Montagnon, Spacecraft Operations Manager for the objective.
” As is often the case, our missions course has actually been prepared so meticulously that no more correction maneuvers are anticipated for this upcoming flyby. BepiColombo is on track.”
First peek of Mercury
Due to the fact that it is protected by the transfer module while the spacecraft is in cruise configuration, throughout the flybys it is not possible to take high-resolution images with the main science electronic camera. However, two of BepiColombos 3 keeping an eye on cams (MCAMs) will be taking pictures from about five minutes after the time of close approach and as much as 4 hours later on. Due to the fact that BepiColombo is arriving in the worlds nightside, conditions are not perfect to take images directly at the closest method, thus the closest image will be caught from a range of about 1000 km.
Secret moments during BepiColombos very first Mercury flyby on October 1, 2021, which will see the spacecraft pass within 200 km of the planet at 23:34 UTC. Credit: ESA
The very first image to be downlinked will be from about 30 minutes after closest technique, and is expected to be available for public release at around 08:00 CEST on Saturday morning. The close approach and subsequent images will be downlinked one by one throughout Saturday morning.
The cameras supply black-and-white snapshots in 1024 x 1024 pixel resolution, and are positioned on the Mercury Transfer Module such that they likewise record the spacecrafts solar selections and antennas. As the spacecraft alters its orientation during the flyby, Mercury will be seen passing behind the spacecraft structural elements.
In basic, MCAM-2 will point towards the northern hemisphere of Mercury, while MCAM-3 will point towards the southern hemisphere. Throughout the half hour following the close technique, imaging will alternate in between the 2 cameras. Later imaging will be performed by MCAM-3.

Artist impression of BepiColombo zipping Mercury on October 1, 2021. The spacecraft makes nine gravity assist maneuvers (among Earth, 2 of Venus and six of Mercury) before entering orbit around the inner planet of the Solar System in 2025. Credit: ESA/ATG medialab

For the closest images it need to be possible to determine large effect craters on earths surface. Mercury has actually a greatly cratered surface just like the look of Earths Moon, plotting its 4.6 billion year history. Mapping the surface of Mercury and evaluating its composition will assist researchers comprehend more about its formation and development.
Even though BepiColombo is in stacked cruise configuration for the flybys, it will be possible to run some of the science instruments on both planetary orbiters, permitting a very first taste of the worlds magnetic, plasma and particle environment.
” Were truly looking forward to seeing the first arise from measurements taken so close to Mercurys surface area,” says Johannes Benkhoff, ESAs BepiColombo job researcher. “When I began working as task scientist on BepiColombo in January 2008, NASAs Messenger mission had its first flyby at Mercury. Now its our turn. Its a wonderful sensation!”
Celebrating BepiColombos namesake
The upcoming first Mercury flyby falls on the 101st anniversary of the birth of Giuseppe Bepi Colombo (October 2, 1920– February 20, 1984), an Italian researcher and engineer for whom the BepiColombo mission is called. His interplanetary estimations allowed NASAs Mariner 10 spacecraft to accomplish 3 flybys of Mercury instead of one by utilizing a flyby of Venus to change the spacecrafts flight course– the first of numerous spacecraft to use such a gravity help maneuver.
BepiColombo, with its 2 science orbiters, is set to construct on the accomplishments of NASAs Messenger objective, to offer the finest understanding of the Solar Systems innermost planet to date. This graphic highlights select Messenger discoveries, and suggests how BepiColombo will follow up. Credit: ESA
Following Mariner 10s objective in 1974-75, NASAs Messenger spacecraft flew by Mercury 3 times in 2008-09 and orbited the planet for 4 years (2011-2015). The BepiColombo objective will build on the successes of its predecessors to provide the finest understanding of the Solar Systems inner world to date.
The very first image is expected to be launched early in the early morning of Saturday October 2 (provisionally 08:00 CEST); subsequent images may be launched later in the day on Saturday and/or Monday October 4. Extra science commentary may likewise be readily available in the week following the flyby. Timings subject to alter depending upon actual spacecraft occasions and image schedule.

Artist impression of BepiColombo, an international cooperation between ESA and JAXA. Credit: ESA/ATG medialab

The spacecraft makes 9 gravity assist maneuvers (one of Earth, two of Venus and 6 of Mercury) prior to entering orbit around the innermost planet of the Solar System in 2025. The spacecraft makes 9 gravity help maneuvers (one of Earth, two of Venus and 6 of Mercury) before going into orbit around the inner world of the Solar System in 2025. The spacecraft makes 9 gravity assist maneuvers (one of Earth, 2 of Venus and six of Mercury) prior to getting in orbit around the innermost planet of the Solar System in 2025. The spacecraft makes 9 gravity help maneuvers (one of Earth, two of Venus and 6 of Mercury) prior to entering orbit around the innermost world of the Solar System in 2025. His interplanetary computations enabled NASAs Mariner 10 spacecraft to achieve 3 flybys of Mercury rather of one by utilizing a flyby of Venus to alter the spacecrafts flight course– the very first of lots of spacecraft to use such a gravity help maneuver.

Artist impression of BepiColombo zipping Mercury on October 1, 2021. The spacecraft makes nine gravity assist maneuvers (one of Earth, 2 of Venus and six of Mercury) prior to going into orbit around the inner planet of the Solar System in 2025. Credit: ESA/ATG medialab
The ESA/JAXA BepiColombo objective to Mercury will make the first of 6 flybys of its destination planet on October 1, 2021, prior to entering orbit in 2025.
Hot on the heels of its last Venus flyby in August, the spacecrafts next amazing encounter is with Mercury at 23:34 UTC on October 1 (01:34 CEST October 2). It will swoop by the world at an altitude of about 200 km, catching images and science information that will offer researchers an alluring first taste of whats to come in the primary objective.

Artist impression of BepiColombo flying by Mercury on October 1, 2021. The spacecraft makes nine gravity help maneuvers (among Earth, two of Venus and 6 of Mercury) prior to entering orbit around the inner planet of the Solar System in 2025. Credit: ESA/ATG medialab

Artist impression of BepiColombo flying by Mercury on October 1, 2021. The spacecraft makes 9 gravity help maneuvers (among Earth, two of Venus and six of Mercury) prior to entering orbit around the inner planet of the Solar System in 2025. Credit: ESA/ATG medialab