Voyager Chronology |
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Voyager Chronology |
 Dec 14 2007, 09:27 AM
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#1
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Junior Member  Group: Members Posts: 45 Joined: 18-July 05 Member No.: 439  |
I wonder if anybody has a Voyager chronology with such details as dates of all TCMs or precise times of closest approach to different moons of Jupiter back in 1979. What I've found of pre-Saturn TCMs is here:
Voyager 1 1977.09.05 Launch 1977.09.11 TCM-1 1977.09.13 TCM-1 1977.10.29 TCM-1A 1978.06? TCM-2? 1979.01.04 Jupiter Observatory Phase 1979.01.29? TCM-3 1979.02.21 TCM-4 1979.03.05 Jupiter Flyby 1979.04.09 TCM-5 ... 1980.08.22 Saturn Observatory Phase 1980.10.10-11 TCM A8 1980.11.06 TCM A9 1980.11.12 Saturn Flyby Voyager 2 1977.08.20 Launch 1977.10.11 TCM-1 1978.05.03 TCM-2 1979.04.24 Jupiter Observatory Phase 1979.06.27 TCM? 1979.07.09 Jupiter Flyby 1979.07.09 TCM? 1979.07.23 TCM? 1980? TCM B6? 1981.02.26 TCM B7 1981.06.05 Saturn Observatory Phase 1981.07.19 TCM B8 1981.08.18 TCM B9 1981.08.26 Saturn Flyby |
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| Guest_PhilCo126_* |
Dec 16 2007, 04:18 PM
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#2
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Guests |
Now we just need, for each Voyager, entry and exit dates of the asteroid belt
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Dec 16 2007, 07:03 PM
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#3
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 Merciless Robot Group: Admin Posts: 8790 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Ah...memories...
 On 12 Nov 1980 my high school physics teacher & I went to the now-defunct Village Inn Pizza Parlor in my home town & watched the V1 Saturn encounter feed from PBS on their big-screen projection TV. We also split, uh, a few pitchers of beer (drinking age was 18 then, so I was only a couple of months shy...  )...a staggering experience in all respects!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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| Guest_PhilCo126_* |
Dec 17 2007, 03:10 PM
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#4
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Guests |
Voyager 1 & 2 passages through Jovian system
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| Guest_PhilCo126_* |
 Dec 17 2007, 03:15 PM
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#5
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Voyager 1 & 2 passages through Saturn system
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| Guest_PhilCo126_* |
Dec 17 2007, 03:17 PM
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#6
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Guests |
Voyager 2 fly bys of Uranus (January 1986) and Neptune (August 1989)
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Dec 17 2007, 07:55 PM
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#7
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Junior Member Group: Members Posts: 45 Joined: 18-July 05 Member No.: 439 |
QUOTE (PhilCo126 @ Dec 16 2007, 07:18 PM)  Now we just need, for each Voyager, entry and exit dates of the asteroid belt It's much more easy. Asteroid belt entry date is 1977 Dec 10 for both Voyagers at the distance of 2.0 AU from Sun. Voyager 1 exited the belt at 3.6 AU on 1978 Sep 08 and Voyager 2 followed her on 1978 Oct 21. Really a pity nobody knows of TCMs I missed or marked uncertain, and of Jupiter and Saturn satellites TCA times. |
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Dec 17 2007, 09:18 PM
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#8
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 Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Thanks for those diagrams PhilCo! I can't tell you how many times I've searched for those on the Internet. Where did you scan them from?
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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| Guest_PhilCo126_* |
Dec 18 2007, 07:55 AM
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#9
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Guests |
Hello Emily,
You can check the books at the lower rightside of my weblog. Most of You know "The Voyager Neptune Travel Guide", but I prefer the 'rarer' and larger sized "The Voyager Uranus Travel Guide" (See attachments). Both can still be found at book-searches on the internet (contact me off-forum). Philip |
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Dec 18 2007, 08:21 PM
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#10
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Junior Member Group: Members Posts: 95 Joined: 5-September 07 Member No.: 3662 |
It's too bad that finding info on Voyager is so difficult. The nice folks at the Voyager project at JPL have helped me a couple of times, but even they have trouble putting their hands on some things. I'd been looking for photos of the cable harnesses entering the scan platform instruments for a model I'm building, and the Voyager project couldn't locate what I was after. I imagine the closeout photos are all in boxes in the JPL archives by now! I was grateful for the effort, I know they're doing a lot with a small crew.
Oh--the Voyager Neptune Travel Guide is available through NTRS, I believe, but not the Uranus one. It's a big PDF, but beautifully written. Also, and slightly OT, I'd love to hear from anybody who's got good info on the solid upper stages that were actually controlled by the Voyagers themselves. There's precious little on them out there on the Internet, and I haven't found anything substantial even in books about the Voyager project. You can PM me if you wish. Jeff |
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Jan 3 2008, 01:27 PM
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#11
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Junior Member Group: Members Posts: 45 Joined: 18-July 05 Member No.: 439 |
I was able to found times of Jupiter flyby for Voyager 1 in UTC Earth Receive Time (some 17.7 minutes after the real event):
1979.03.05 12:42 Jupiter 1979.03.05 15:51 Io 1979.03.05 17:56 Europa 1979.03.06 02:53 Ganymede 1979.03.06 17:45 Callisto I also have a precise spacecraft time for Io flyby, 15:13:21, and two versions of Jupiter flyby time, 12:05:26 or 12:04:36. I presume that one of this time is what was seen online and another is what was calculated post-flyby from all tracking points. |
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Jan 3 2008, 01:33 PM
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#12
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 Senior Member Group: Members Posts: 3652 Joined: 1-October 05 From: Croatia Member No.: 523 |
How come only 17.7 minutes? Light time should add up to more than that.
EDIT: Ahh, probably a typo, should read 37.7 minutes instead. -------------------- |
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Jan 4 2008, 03:49 PM
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#13
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Junior Member Group: Members Posts: 45 Joined: 18-July 05 Member No.: 439 |
QUOTE (ugordan @ Jan 3 2008, 04:33 PM) How come only 17.7 minutes? Light time should add up to more than that. EDIT: Ahh, probably a typo, should read 37.7 minutes instead. Of course, 37.7 min. Thank you. |
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Apr 18 2008, 09:23 AM
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#14
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 Member Group: Members Posts: 340 Joined: 11-April 08 From: Sydney, Australia Member No.: 4093 |
I can offer the following, need to do more research to verify timezones and SCET/ERT:
The Overtaking: 19 Dec 1977 Voyager 1 overtakes Voyager 2 Voyager 1 05 Mar 1979 (06:54) Amalthea: Amalthea flyby (distant) 05 Mar 1979 (12:05) Jupiter: Jupiter Fly-By 05 Mar 1979 (15:14) Io: Io flyby 05 Mar 1979 (18:19) Europa: Europa flyby (distant) 06 Mar 1979 (02:15) Ganymede: Ganymede flyby 06 Mar 1979 (17:08) Callisto: Callisto flyby 12 Nov 1980 (05:41) Titan: Titan flyby (targetted) 12 Nov 1980 (22:17) Tethys: Tethys flyby (distant) 12 Nov 1980 (23:46) Saturn: Saturn Fly-By 13 Nov 1980 (01:43) Mimas: Mimas flyby 13 Nov 1980 (01:51) Enceladus: Enceladus flyby (distant) 13 Nov 1980 (03:39) Dione: Dione flyby (distant) 13 Nov 1980 (06:22) Rhea: Rhea flyby 13 Nov 1980 (16:45) Hyperion: Hyperion flyby (distant) 17 Feb 1998 Voyager 1 overtakes Pioneer 10 and becomes most distant spacecraft from the sun by 2028 Reaches Heliopause in 40,000 years Passes Star AC+79 3888 (at distance of 1.6 light-years) Voyager 2 08 Jul 1979 (12:21) 214,930 km Callisto: Callisto flyby (distant) 09 Jul 1979 (07:14) 62,130 km Ganymede: Ganymede flyby 09 Jul 1979 (17:53) 205,720 km Europa: Europa flyby (distant) 09 Jul 1979 (20:01) 558,370 km Amalthea: Amalthea flyby (distant) 09 Jul 1979 (22:29) 721,883 km Jupiter: Jupiter 09 Jul 1979 (23:17) 1,129,900 km Io: Io flyby (distant) 25 Aug 1981 (09:24) 665,960 km Titan: Titan flyby (distant) 26 Aug 1981 (01:04) 502,250 km Dione: Dione flyby (distant) 26 Aug 1981 (02:34) 309,990 km Mimas: Mimas flyby (distant) 26 Aug 1981 (03:24) 161,081 km Saturn: Saturn 26 Aug 1981 (03:45) 87,140 km Enceladus: Enceladus flyby 26 Aug 1981 (06:12) 93,000 km Tethys: Tethys flyby 26 Aug 1981 (06:29) 645,280 km Rhea: Rhea flyby (distant) 24 Jan 1986 (17:59) 107,092 km Uranus: Uranus 14 Feb 1986 2.5 hrs trajectory correction maneuvre targets Voyager 2 towards Neptune 25 Aug 1989 39,800 km Triton: Triton 25 Aug 1989 (03:56) 29,216 km Neptune: Neptune by 2008 Termination shock area by 2028 Reaches Heliopause in 296,000 years Passes Sirius (at a distance of 4.3 lightyears ) -------------------- |
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Jun 19 2008, 07:02 PM
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#15
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Junior Member Group: Members Posts: 45 Joined: 18-July 05 Member No.: 439 |
Thank you very much, dmuller.
QUOTE (Liss @ Jan 3 2008, 04:27 PM) I also have a precise spacecraft time for Io flyby, 15:13:21, and two versions of Jupiter flyby time, 12:05:26 or 12:04:36. I presume that one of this time is what was seen online and another is what was calculated post-flyby from all tracking points. Things proved to be even more interesting. Both are times of closest approach, spacecraft time! 12:04:36 is UTC, but 12:05:26 is ET (ephemeris time), currently known as terrestrial time (TT). In 1979, ET was 32.184 seconds ahead of TAI and UTC was 18 seconds behind TAI. |
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