PIONEER chronology |
PIONEER chronology |
Guest_PhilCo126_* |
Jan 4 2008, 05:35 PM
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#1
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Guests |
Just thought I would start a similar topic as the 'VOYAGER chronology' ... of course with nice diagrams
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May 7 2009, 02:28 AM
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#2
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Member Group: Members Posts: 340 Joined: 11-April 08 From: Sydney, Australia Member No.: 4093 |
Pioneer 11 had a fairly close flyby of Atlas at 45,960km on 1 Sep 1979 15:06:32. To put it into perspective ... Cassini got closer to Atlas only once so far AFAIK!
Umm, in http://trs-new.jpl.nasa.gov/dspace/bitstre...5/1/03-0282.pdf actual TCA is given as 16:30:34. I suspect that time is ET, which converts to 16:29:44 UTC. That's just 10 seconds off the times in Horizons. And at the time of C/A, the altitude doesnt change much so I'd take both times as being "equal enough" :-) -------------------- |
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Apr 9 2020, 10:09 PM
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#3
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Junior Member Group: Members Posts: 45 Joined: 18-July 05 Member No.: 439 |
I suspect that time is ET, which converts to 16:29:44 UTC. That's just 10 seconds off the times in Horizons. And at the time of C/A, the altitude doesnt change much so I'd take both times as being "equal enough" :-) No it's not correct. Null et al. in https://ui.adsabs.harvard.edu/abs/1981AJ.....86..456N said Pioneer 11 CA was at 16:31:24 ET (spacecraft time). It fits with 16:30:34 UTC as listed by Campbell and Anderson (1989) and Jacobson (2003). . Also, there was an error in my list of Pioneer 11 Jupiter timeline. Unfortunately it did it to Wiki. Tp+01h 08m = 22:29 - Amalthea, 127500 km should read Tp+01h 08m = 06:29 - Amalthea, 127500 km . And of course, in Pioneer 11 Saturn timeline Tp-00h 30m = 16:04 - Dione, 291100 km Tp-00h 07m = 16:27 - Dione, 291100 km should read Tp-00h 30m = 16:04 - Dione, 291100 km Tp-00h 07m = 16:27 - Mimas, 104210 km |
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