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Juno- Satellite Observations
Antdoghalo
post Jul 31 2023, 05:38 PM
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That would be awesome because from here on, the Juno passes will improve on older maps especially at the poles with the next 2 passes. If you can, try to map previous passes too, I think PJ51 improved on mapping.


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volcanopele
post Sep 20 2023, 09:04 PM
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Another update to my Juno image page, now with JunoCam images from PJ53.

https://pirlwww.lpl.arizona.edu/~perry/Juno/index.html

For PJ53, I included a simple cylindrical projection product.


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Antdoghalo
post Sep 20 2023, 09:09 PM
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Neat! BTW when will you post on the Gish Bar Times again? Io's finally getting some love from Juno


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volcanopele
post Sep 20 2023, 09:19 PM
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Maybe that's coming soon? I have a few ideas previewing the encounters. Have to be a little careful, as back in the good ole days of the blog, I could write about whatever I wanted as my work/research tasks didn't overlap. Nowadays though I do some work related to JIRAM in particular, and JunoCam as well. So I do need to be a bit careful scooping myself.


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Antdoghalo
post Oct 11 2023, 12:02 PM
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I have a question about post Io operations should Juno manage it. Could Juno eventually be able to flyby and image Amalthea further down the road and accomplish what Galileo was not able to?


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xflare
post Oct 11 2023, 01:01 PM
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Are the "image times" at https://pirlwww.lpl.arizona.edu/~perry/Juno/pj55.htm in UTC?? Trying to find times of closest approach
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Explorer1
post Oct 11 2023, 01:41 PM
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QUOTE (Antdoghalo @ Oct 11 2023, 08:02 AM) *
I have a question about post Io operations should Juno manage it. Could Juno eventually be able to flyby and image Amalthea further down the road and accomplish what Galileo was not able to?


Amalthea is tiny and Junocam's FOV is very large; a flyby would have to be very close to improve on Galileo, so I wouldn't hold out too much hope...
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volcanopele
post Oct 11 2023, 04:05 PM
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QUOTE (xflare @ Oct 11 2023, 06:01 AM) *
Are the "image times" at https://pirlwww.lpl.arizona.edu/~perry/Juno/pj55.htm in UTC?? Trying to find times of closest approach

Yes, those times are in UTC. Please note that these are just examples. I don't know the JunoCam team's actual image plans and so I just took the PJ53 image times, used that as a template around the C/A time and adjusted them based on when the green filter was centered on Io (from the predict c-kernel).

C/A time for PJ55 is 10/15/2023 06:47:21.316


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volcanopele
post Nov 16 2023, 06:19 PM
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The reference trajectory for Juno has been updated (spk_ref_231110_251016_231110.bsp). This includes the updated Io encounters in 2024 and 2025 that Scott Bolton mentioned at OPAG back in May, though some of the distances have been adjusted since that presentation. Here is that update. First table has the encounters through PJ58 which are unchanged, and then the post-PJ58 encounters.


Attached Image

Attached Image


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StargazeInWonder
post Nov 17 2023, 03:51 PM
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I did a little math on the possibility of a worthwhile Amalthea image – for favorable geometry to occur by happenstance without planning for it is rather unlikely, even if Juno's orbit eventually spends a few orbits intersecting the equatorial plane of Jupiter near the semimajor axis of Amalthea's orbit. I wonder if there's been any checking of the possibility.
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vjkane
post Nov 17 2023, 07:37 PM
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QUOTE (volcanopele @ Nov 16 2023, 10:19 AM) *
The reference trajectory for Juno has been updated (spk_ref_231110_251016_231110.bsp). This includes the updated Io encounters in 2024 and 2025 that Scott Bolton mentioned at OPAG back in May, though some of the distances have been adjusted since that presentation. Here is that update. First table has the encounters through PJ58 which are unchanged, and then the post-PJ58 encounters.


Attached Image

Attached Image

I plotted out the resolutions in the tables that volcanopele posted versus date.

I looks like the mission will tweak the orbits in 2025 to keep 3 encounters at nearly the same resolution. I wonder if the geometry of the imaging/lighting is particularly favorable then.


Attached thumbnail(s)
Attached Image
 


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