KBO encounters |
KBO encounters |
Aug 2 2008, 12:53 PM
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#501
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Newbie Group: Members Posts: 6 Joined: 1-August 08 Member No.: 4280 |
Hi,
I’m regular follower of NH and I’m also interested in the 2nd leg of the mission, i.e the 2016+ KBOs encounters. Does anyone know when operations about this leg (starting with searching objects of interest with HST or some other earth-based means, I suppose) are expected to begin ? |
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Jan 7 2019, 04:34 PM
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#502
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Senior Member Group: Members Posts: 1591 Joined: 14-October 05 From: Vermont Member No.: 530 |
How many LORRI photos is "many" when you're just looking at the cone of potential flyby targets? You definitely do not need to look near the sun or to the side to search for flyby targets. NH would take X number of images towards its future path every Y amount of time... X might be small and Y might be large for things to be feasible.
But I will say that the slow-ness of downlink for UT makes me realize that you might be right in thinking at least some processing must be done on board. Slide 3/4 here seemed to be hinting at what they hope the future holds for LORRI. http://pluto.jhuapl.edu/News-Center/Press-...page=2019-01-03 |
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Jan 7 2019, 06:27 PM
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#503
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Member Group: Members Posts: 684 Joined: 24-July 15 Member No.: 7619 |
How many LORRI photos is "many" when you're just looking at the cone of potential flyby targets? You definitely do not need to look near the sun or to the side to search for flyby targets. NH would take X number of images towards its future path every Y amount of time... X might be small and Y might be large for things to be feasible. But I will say that the slow-ness of downlink for UT makes me realize that you might be right in thinking at least some processing must be done on board. Slide 3/4 here seemed to be hinting at what they hope the future holds for LORRI. http://pluto.jhuapl.edu/News-Center/Press-...page=2019-01-03 Some of the more engineering level detailed discussion starts up around post 300 of the Pluto/KBO > New Horizons thread. My back of the envelope calculations back then were based on a .5 degree flight cone, and KBO denisity estimates to guesstimate that based on Lorri specifications are 17.5 magnitude 9.9 seconds exposure. stretching the camera to 29.9 second exposures, NH might detect 28th magnitude KBO's at 2/3 of an AU, which could mean tens to hundreds of KBOs would be "visible" as they pass; we just don't know when to turn on the cameras, or which way to point. |
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