2020 October 10 - Asteroid occultation event.

Exoplanet occultation, asteroid occultation,
solar research, comet observation, astrometry, etc.
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2020 October 10 - Asteroid occultation event.

文章 PTS » 週日 30 8月, 2020 22:16

2020 October 10 - Asteroid occultation event.

Asteroid (109) Felicitas (mag 12.87) will occult TYC 2454-01124-1 (mag 10.0).

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
(109) Felicitas / TYC 2454-01124-1 event on 2020 Oct 10, 21:35 UT
Visible from China, SE Asia, India


Summary
-------
On 2020 Oct 10 UT, the 87.1 km diameter asteroid (109) Felicitas will occult a
10.0 mag star in the constellation Gemini for observers along a path across
China, SE Asia, India.

In the case of an occultation, the combined light of the asteroid and the star
will drop by 2.99 mag to 12.87 mag (the magnitude of the asteroid) for at most
4.0 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: 99
* date and approx. time of event: 2020 Oct 10, 21:30 - 2020 Oct 10, 21:40
* geocentric midpoint of event [JD]: 2459133.39968750
* magnitude of target star: 9.95
* magnitude drop [mag]: 2.99
* estimated maximum duration [s]: 4.0
* Moon: 40 % sunlit, 9° distance
* Sun: 86° distance
* rough path description: China, SE Asia, India

The occultation path
--------------------
* approximate projected width [km]: 88
* 1 sigma uncertainty interval [path widths]: +/- 0.14
* 1 sigma uncertainty interval [seconds]: +/- 1.3
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.010)
* 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.009", 104°)
* approx speed of asteroid's shadow [km/s]: 21.8481
* website for maps:
http://www.asteroidoccultation.com
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