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PostPosted: Mon Nov 06, 2017 6:38 pm 
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I've moved this out of the meteorite thread since it never landed on earth.

Anyway, our first known interstellar visitor prompted a new naming scheme from the IAU as described in...

MPEC 2017-V17 : NEW DESIGNATION SCHEME FOR INTERSTELLAR OBJECTS

Quote:
Provisional designations for interstellar objects will be handled using the C/ or A/ prefix (as appropriate), with the designation using the comet system.

Accordingly, the object A/2017 U1 receives the permanent designation 1I and the name 'Oumuamua. The name, which was chosen by the Pan-STARRS team, is of Hawaiian origin and reflects the way this object is like a scout or messenger sent from the distant past to reach out to us ('ou means reach out for, and mua, with the second mua placing emphasis, means first, in advance of).

Correct forms for referring to this object are therefore: 1I; 1I/2017 U1; 1I/'Oumuamua; and 1I/2017 U1 ('Oumuamua).

This first interstellar object is being handled as a special case. A small committee of the WGSBN will be created to codify the circumstances under which an object will quality for an I-number and the rules that will apply to the names, bearing in mind the precedent set by this case. A formal report will follow their deliberations.

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PostPosted: Tue Nov 07, 2017 7:23 pm 
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Bump for Joe!

Also:

Planetary Society asteroid hunter snags picture of interstellar visitor ʻOumuamua

http://www.planetary.org/blogs/jason-da ... pient.html

Quote:
One week after the discovery, asteroid hunter Luca Buzzi tracked ʻOumuamua from northern Italy with a 50-minute image exposure on October 26. In an email, Buzzi said he fought thin cirrus clouds to barely pull the asteroid above the visual threshold using his 0.84-meter telescope and Planetary Society-funded CCD camera. He ordinarily uses the equipment to track potentially hazardous near-Earth asteroids.


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yomama.jpg
yomama.jpg [ 73.77 KiB | Viewed 53 times ]

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PostPosted: Wed Nov 08, 2017 1:02 am 
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The name has been a source of comment and complaint on the Minor Planet Mailing List.

First, a number of posters wondered about the diacritical mark at the beginning of the name, mainly because it might cause problems with alphabetical sorting and searching. In the Hawaiian language, the mark is technically an 'okina, which indicates a glottal stop. See...

https://www.hawaii.edu/site/info/diacritics.php

Per Dave Tholen, an astronomer with the Institute for Astrophysics, University of Hawai'i, the new name is pronounced: owe moo-uh moo-uh

Second, and perhaps a greater problem, is the use of an uppercase "i" to indicate "Interstellar" in the designation, in this case "1I." The problem is that it can easily be confused with the number "1," a lowercase "L" or an uppercase letter "i" depending on the typeface. There was a suggestion that they should have used a less-confusing uppercase "E" to indicate "Extrasolar."

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PostPosted: Tue Nov 14, 2017 1:55 pm 
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An Origin for a Far Traveling Asteroid

https://www.centauri-dreams.org/?p=38782

Quote:
We suggest that A/2017 U1 formed in a protoplanetary disk in the Carina/Columba associations and was ejected by a planet ≈40 Myr ago. The absence of ice indicates an origin inside the “ice line” of the disk plus an ejection velocity of 1-2 km sec−1 (assuming the cluster was already unbound), constrain the mass mP and semi-major axis aP of the planet.

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PostPosted: Mon Nov 20, 2017 12:59 pm 
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Solar System’s First Interstellar Visitor Dazzles Scientists

https://www.nasa.gov/feature/solar-syst ... scientists

I am tickled by NASA mentioning this object is 'cigar-shaped'.

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PostPosted: Mon Nov 20, 2017 2:05 pm 
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Is 1I/2017 U1 Really of Interstellar Origin?

http://iopscience.iop.org/article/10.38 ... a9af2/meta

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PostPosted: Mon Nov 20, 2017 2:06 pm 
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I found a really good paper about 'Oumuamua.


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10.1038@nature25020.pdf [2.05 MiB]
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