2018 October 31 asteroid occultation event

Exoplanet occultation, asteroid occultation,
solar research, comet observation, astrometry, etc.
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PTS
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2018 October 31 asteroid occultation event

文章 PTS » 週二 25 9月, 2018 10:42

2018 October 31 asteroid occultation event
I've prepared finder charts from:
Digital Sky Survey (15 x 15 arcmin) and The Sky 6 (15x11 arcmin)

IOTA/IOTA-ES occultation update for
(2394) Nadeev / TYC 6351-00085-1 event on 2018 Oct 31, 11:45 UT
Visible from Japan, China, SE Asia


Summary
-------
On 2018 Oct 31 UT, the 24.1 km diameter asteroid (2394) Nadeev will occult a
11.8 mag star in the constellation Capricornus for observers along a path
across Japan, China, SE Asia.

In the case of an occultation, the combined light of the asteroid and the star
will drop by 5.76 mag to 17.51 mag (the magnitude of the asteroid) for at most
2.2 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly
provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill
Owen, astrometry for the asteroid kindly provided by the IAU Minor Planet
Center.

This work has made use of data from the European Space Agency (ESA)
mission Gaia (http://www.cosmos.esa.int/gaia), processed by the
Gaia Data Processing and Analysis Consortium
(DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium).
Funding for the DPAC has been provided by national institutions, in
particular the institutions participating in the Gaia Multilateral Agreement.

The event at a glimpse
----------------------
* Rank: 50
* date and approx. time of event: 2018 Oct 31, 11:37 - 2018 Oct 31, 11:53
* geocentric midpoint of event [JD]: 2458422.98991667
* magnitude of target star: 11.76
* magnitude drop [mag]: 5.76
* estimated maximum duration [s]: 2.2
* Moon: 53 % sunlit, 168° distance
* Sun: 98° distance
* rough path description: Japan, China, SE Asia

The occultation path
--------------------
* approximate projected width [km]: 29
* 1 sigma uncertainty interval [path widths]: +/- 1.42
* 1 sigma uncertainty interval [seconds]: +/- 4.5
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.027, +/- 0.018)
* 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.017", 77°)
* approx speed of asteroid's shadow [km/s]: 11.0832
* website for maps:
http://www.asteroidoccultation.com
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PTS
夸克星
文章: 6321
註冊時間: 週日 28 10月, 2007 08:50
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Re: 2018 October 31 asteroid occultation event

文章 PTS » 週三 31 10月, 2018 09:01

Reminder.

Hoping for a clear sky

PTS
夸克星
文章: 6321
註冊時間: 週日 28 10月, 2007 08:50
來自: HK

Re: 2018 October 31 asteroid occultation event

文章 PTS » 週三 31 10月, 2018 21:27

Unfortunately, thick cloud covered the target area about 30 minutes before the event.
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Eddy So
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Re: 2018 October 31 asteroid occultation event

文章 Eddy So » 週三 31 10月, 2018 22:01

[Good Job]

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