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32592

Ice in Ceres' Shadowed Craters Linked to Tilt History

https://www.jpl.nasa.gov/news/news.php?feature=6787 Ice in Ceres' Shadowed Craters Linked to Tilt History Jet Propulsion Laboratory March 22, 2017 Dwarf planet
Ron Baalke
Mar 23
#32592
 
32591

Re: Upcoming star catalogues

Don't forget the first catalogue in this area - the 'Hot Stuff for One Year' catalogue (HSOY) https://arxiv.org/abs/1701.02629 It derives proper motions using
Dave Herald
Mar 21
#32591
 
32590

The Many Faces of Rosetta's Comet 67P

https://www.jpl.nasa.gov/news/news.php?feature=6786 The Many Faces of Rosetta's Comet 67P Jet Propulsion Laboratory March 21, 2017 Images returned from the
Ron Baalke
Mar 21
#32590
 
32589

Upcoming star catalogues

It may be worth noting here that folks working from the GAIA DR1 have been iterating on mixing/matching with earlier astrometric catalogues with high internal
Brian Skiff
Mar 21
#32589
 
32588

Re: YF98B10 = close approacher, needs follow-up

2017 FN1 = YF98B10 [MPEC 2017-F47] http://www.minorplanetcenter.net/mpec/K17/K17F47.html Closest approach to the Earth: 63,270 km +/- 100 km at 21:02 UTC on
Patrick Schmeer
Mar 21
#32588
 
32587

Mars Volcano, Earth's Dinosaurs Went Extinct About the Same Time

https://www.jpl.nasa.gov/news/news.php?feature=6783 Mars Volcano, Earth's Dinosaurs Went Extinct About the Same Time Jet Propulsion Laboratory March 20, 2017
Ron Baalke
Mar 20
#32587
 
32586

COBALT Flight Demonstrations Fuse Technologies to Gain Precision Lan

https://www.jpl.nasa.gov/news/news.php?feature=6780 COBALT Flight Demonstrations Fuse Technologies to Gain Precision Landing Results March 17, 2017 Many
Ron Baalke
Mar 20
#32586
 
32584

Cassini Reveals Strange Shape of Saturn's Moon Pan

https://www.jpl.nasa.gov/news/news.php?feature=6770 Cassini Reveals Strange Shape of Saturn's Moon Pan Jet Propulsion Laboratory March 9, 2017 [Images] These
Ron Baalke
Mar 20
#32584
 
32585

Dawn Identifies Age of Ceres' Brightest Area

https://www.jpl.nasa.gov/news/news.php?feature=6766 Dawn Identifies Age of Ceres' Brightest Area Jet Propulsion Laboratory March 8, 2017 The bright central
Ron Baalke
Mar 20
#32585
 
32583

YF98B10 = close approacher, needs follow-up

Hello all, This small (H=30.5) object will pass us at 63000 +/- 9000 km at 21:00 UTC today (i.e., about seven hours, plus-or-minus about fifteen minutes).
Bill Gray
Mar 20
#32583
 
32582

MPB 44-2 Now Available

The latest issue of the Minor Planet Bulletin, Vol 44-2, is now available as a free download (data and connection fees may apply). This issue is 80 pages and
Brian Warner
Mar 19
#32582
 
32581

Re: Fast neutrons produced in large hypervelocity impacts

... There’s nothing new about computer modelling. Computers simply apply mathematical equations at a rate that is much faster than the human minds that used
Greg Crawford
Mar 12
#32581
 
32580

Re: Fast neutrons produced in large hypervelocity impacts

Not bad as description of my work on the subject of orbit determination of space ojbects, natural and artificial, between 1978 and 2017. Thus you can perhaps
Andrea Milani
Mar 12
#32580
 
32579

Re: Fast neutrons produced in large hypervelocity impacts

... Fast neutrons will turn surrounding materials radioactive, and that radioactivity will last. I find it hard to believe that no one has ever noticed such an
marshall_eubanks
Mar 11
#32579
 
32578

Re: Fast neutrons produced in large hypervelocity impacts

OK, first off... I'd bet that the folks testing hypervelocity impacts (with gas guns, for example) haven't checked for neutrons getting knocked loose as a
Bill Gray
Mar 11
#32578
 
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