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| 2021 RG19 |
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Posted by: PMSchu - 2021-09-27, 04:20 PM - Forum: Observing Close Approaching Asteroids
- Replies (29)
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The fast mover 2021 RG19 is predicted to reach ~16 mag on the nights of Sep 27 & 28 2021. It's moving ~2'/min.
Here's a screenshot of the path using elements from 2021 Sep 24: [attachment=2018]
I'm currently getting updated elements from MPC & will post a path using elements for today's epoch & a file of elements from HORIZONS at 4 hr intervals.
Hope someone can get a look at it,
Phil S.
Here's the path predicted using elements for 2021 Sep 27: [attachment=2019]
The file of osculating elements calculated by HORIZONS at 4 hr intervals is posted below.
The HORIZONS page for calculating the elements is here:
Horizons System (nasa.gov)
I hope the link works.
Phil S.
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| SSD Website Upgrade 2021-Sep-27 |
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Posted by: bigmasterdrago - 2021-09-14, 09:17 AM - Forum: Observing Close Approaching Asteroids
- Replies (1)
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In case you didn't know...
Begin forwarded message:
Quote:
From: "Chamberlin, Alan B (US 392R)" <achamberlin@jpl.nasa.gov>
Subject: SSD Website Upgrade 2021-Sep-27
Date: 13 September 2021 at 21:40 CST
To: ssd-announce <ssd-announce@jpl.nasa.gov>
Reply-To: "Chamberlin, Alan B (US 392R)" <achamberlin@jpl.nasa.gov>
The SSD website has been significantly upgraded over the past few years with the following goals.
* improved site navigation designed to make it easier to find content of interest
* providing new content and tools
* using APIs behind most tools to allowing direct programmatic access to data
* improved look using commonly used frameworks supported on the most used browsers
Migration to the upgraded website is planned for September 27, 2021 in the morning (Pacific time).
Most users will not need to take any specific action. Users with bookmarked URLs to the
current website should be automatically redirected to new corresponding pages.
If you have or use tools that scrape content from the current website, such tools will likely
fail after the migration. It is important to understand that such tools are not supported.
If you are such a user and are concerned about the implications of the new website,
please let us know what tool(s) you use so we can provide alternative APIs or ideas.
Many new APIs are already available via our API server at https://ssd-api.jpl.nasa.gov/.
Only a few remain to be released and they should be released in the next few days.
A separate announcement will be sent once the remaining APIs have been released.
The new website requires JavaScript. If you use a browser with JavaScript disabled,
you will not be able to use many tools and will not be able to navigate via the menus.
Similarly, if you use a very old browser (e.g., IE8 or earlier), you are also likely
to have trouble using the new tools. For the vast majority of SSD website users, there
should be no issues with your browser.
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| Looking Ahead |
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Posted by: bigmasterdrago - 2021-09-12, 03:47 PM - Forum: Observing Close Approaching Asteroids
- Replies (3)
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Hey Phil, I was looking at some future predictions of rock passes and thought I would mention 2019 XS on November 9. It may be bright enough (H=24, LD=2.5-3), it's well placed (high in south b4 midnight CDT) and moonset is ~10pm. Moving out of Eridanus into Cetus at ~1'/min. It will remain high until 4am on 10th. The position error window appears to be <1min.
It's actually closest to me on Nov. 8, 21:47CDT but below horizon. Predictions indicate it's brightest for me ~06:47CDT Nov 9 but 17° below my horizon.
I've looked at a few others NEOs (2015 TQ21 5 day error box, 2021 RR5 faint, & 2021 RQ9 faint).
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| 2021 RS2 |
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Posted by: bigmasterdrago - 2021-09-08, 01:26 AM - Forum: Observing Close Approaching Asteroids
- No Replies
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From SE Texas, 2021 RS2 on Sept 8, 7UT in Central Cygnus 3.6° NW of Gamma Cygni. Possibly mag 13 alt 45° 30,497 Km ripping by at 1.4°/min. If you're cloud free.
By 8UT, the phase angle get seriously bad and altitude drops way below horizon. Plot it with the freshest elements possible
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| Tips for matching wide field orientation |
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Posted by: Bobbo - 2021-09-07, 08:23 AM - Forum: How do I do it in SkyTools 4 Imaging?
- Replies (3)
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Hi all
I'm struggling with trying to (visually) match a wide field image to the orientation provided in the Camera View of ST. The two most natural orientations are either landscape or portrait, but as far as I can see it isn't possible to keep the CV "locked" in either of those because there are no manual orientation settings available (only Flip or Mirror).
So how do people do it, without standing on your head?
Thanks
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| Data Not Found |
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Posted by: bigmasterdrago - 2021-09-04, 10:51 PM - Forum: Observing Close Approaching Asteroids
- No Replies
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Rarely when a new close pass hops up on CNEOS, no info will be found at Horizons.
JPL/DASTCOM Small-body Index Search Results 2021-Sep-04 15:26:06
Comet AND asteroid index search:
DES = 2021 RF;
Matching small-bodies:
No matches found.
You can go to the discovery info page https://minorplanetcenter.net/db_search
and grab elements there. They will be new and with an uncertainty of high value. In this case 6.
But at least you can run an ephemeris by importing to ST, etc.
And discover that at close approach it may have been between 15-16 mag but very high in south. I say was because that occurred at ~00:00 local CDT this morning. Why no match found at Horizons, I do not know. It will most likely be in standard downloads tomorrow.
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