2020 December 27 - Asteroid occultation event.

Exoplanet occultation, asteroid occultation,
solar research, comet observation, astrometry, etc.
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2020 December 27 - Asteroid occultation event.

文章 PTS » 週二 10 11月, 2020 13:37

2020 December 27 - Asteroid occultation event.

(107) Camilla / UCAC4 419-056694 event on 2020 Dec 27, 22:34 UT

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
(107) Camilla / UCAC4 419-056694 event on 2020 Dec 27, 22:34 UT
Visible from China


Summary
-------
On 2020 Dec 27 UT, the 254 km diameter asteroid (107) Camilla will occult a
12.4 mag star in the constellation Virgo for observers along a path across
China.

In the case of an occultation, the combined light of the asteroid and the star
will drop by 1.30 mag to 13.34 mag (the magnitude of the asteroid) for at most
11.0 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: 100
* date and approx. time of event: 2020 Dec 27, 22:29 - 2020 Dec 27, 22:38
* geocentric midpoint of event [JD]: 2459211.44049167
* magnitude of target star: 12.43
* magnitude drop [mag]: 1.30
* estimated maximum duration [s]: 11.0
* Moon: 95 % sunlit, 130° distance
* Sun: 76° distance
* rough path description: China

The occultation path
--------------------
* approximate projected width [km]: 282
* 1 sigma uncertainty interval [path widths]: +/- 0.07
* 1 sigma uncertainty interval [seconds]: +/- 1.7
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.008)
* 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.007", 102°)
* approx speed of asteroid's shadow [km/s]: 23.0571
* website for maps:
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