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#solarsystem

37 posts9 participants1 post today

NASA observations have found that the interstellar object, known as 31/ATLAS, seen hurtling through our has lost a lot of mass. Many telescopes have been following its journey and it is thought that the loss of mass is due to its close encounter with our sun. It has also changed course slightly. Whilst the amount of mass it has lost is about 13% it is not that unusual. iflscience.com/interstellar-ob

Interstellar Object 3I/ATLAS Has Slightly Changed Course And May Have Lost A Lot Of Mass, NASA Observations Show
IFLScience · Interstellar Object 3I/ATLAS Has Slightly Changed Course And May Have Lost A Lot Of Mass, NASA Observations ShowWhilst the interstellar visitor was out of view, it appears to have changed course slightly, brightened, and may have lost around 13 percent of its mass.

WHOOSH

Looks like we had a bunch of near misses recently in the near-Earth asteroid department. A handful passed by with a miss distance closer than the Moon (<1.0 LD in the “Miss Distance” column). I amuse myself by looking up the date of the first observation (by clicking on the Asteroid name in the table). Often these are spotted *after* they've whooshed by.

If any astronomers who look for these things could offer a perspective on how thousands of Starlink satellites etc. are affecting the search, I would love to hear it.

The table is at spaceweather.com; scroll down a bit. Clicking on an asteroid name takes you to the JPL Small-Body Database Lookup page (ssd.jpl.nasa.gov/tools/sbdb_lo ) with orbital elements, etc. for the body in question. There is also a nice Solar system orbit viewer there (ssd.jpl.nasa.gov/tools/orbit_v) that can show you a 3-d plot of the solar system and any small bodies you want to show (as long as they are in their database, but it's extensive).