Intensely Exciting Imagery Arrives From 200 Million Miles Out
Captured on Oct. 20, 2020 during the OSIRIS-REx mission’s Touch-And-Go (TAG) sample collection event, a series of stunning images now shows the SamCam imager’s field of view as the NASA spacecraft approaches and touches down on asteroid Bennu’s surface, over 200 million miles away from Earth.
The sampling event brought the spacecraft all the way down to sample site Nightingale, touching down within three feet of the targeted location. The team on Earth received confirmation at 6:08 p.m. EDT that successful touchdown occurred. Preliminary data show the one-foot-wide sampling head touched Bennu’s surface for approximately 6 seconds, after which the spacecraft performed a back-away burn.
The spacecraft’s sampling arm – called the Touch-And-Go Sample Acquisition Mechanism (TAGSAM) – is visible in the lower part of the frame. The round head at the end of TAGSAM is the only part of OSIRIS-REx that contacted the surface during the sample collection event. In the middle of the image sequence, the sampling head positions itself to contact the asteroid’s surface head-on. Shortly after, the sampling head impacts site Nightingale and penetrates Bennu’s regolith. Upon initial contact, the TAGSAM head appears to crush some of the porous rocks underneath it. One second later, the spacecraft fires a nitrogen gas bottle, which mobilizes a substantial amount of the sample site’s material. Preliminary data show the spacecraft spent approximately 5 of the 6 seconds of contact collecting surface material, and the majority of sample collection occurred within the first 3 seconds.
The TAGSAM is designed to catch the agitated surface material, and the mission team will assess the amount of material collected through various spacecraft activities. After touchdown, the spacecraft fired its thrusters to back away from Bennu. As expected, this maneuver also disturbed the Nightingale site, and loose debris is visible near the end of the image sequence. Preliminary telemetry shows the spacecraft remains in good health. The spacecraft was traveling at 0.2 mph when it contacted sample site Nightingale and then backed away at 0.9 mph.
These images were captured over approximately a five-minute period. The imaging sequence begins at about 82 feet above the surface, and runs through the back-away maneuver, with the last image in the sequence taken at approximately 43 feet in altitude – about 35 seconds after backing away. The sequence was created using 82 SamCam images, with 1.25 seconds between frames. For context, the images are oriented with Bennu’s west at the top.
Very High Frequency The frequency band between 30 and 300 MHz. Portions of this band, 108 to 118 MHz, are used for certain NAVAIDs; 118 to 136 MHz are used for civil air/ground voi>[...]
Aero Linx: Aviation Suppliers Association Established February 25, 1993, the Aviation Suppliers Association (ASA), based in Washington, D.C., is a not-for-profit association, repre>[...]
Have A Story That NEEDS To Be Featured On Aero-News? Here’s How To Submit A Story To Our Team Some of the greatest new stories ANN has ever covered have been submitted by our>[...]
From 2021 (YouTube Version): Colorado Campus Offers aVariety Of Aerospace Entertainment And Education Wings over the Rockies Exploration of Flight is the second location for the Wi>[...]
Also: Paramotor Champ's, Electric Ultralight, ICON BK Update, Burt Rutan at Oshkosh! The Popular Rotorcraft Association is reaching out for help in rebuilding their private runway >[...]