Hi,
In supplement to WC Yue's post, here are finder charts prepared from Digital Sky Survey and The Sky6.
---------------------------------------------------------------
IOTA/IOTA-ES occultation update for
(1) Ceres / TYC 6846-00936-1 event on 2010 Jun 06, 17:22 UT
Visible from Japan, China, India
Summary
-------
On 2010 Jun 06 UT, the 960 km diameter asteroid (1) Ceres will occult a 10.7 mag
star in the constellation Sagittarius for observers along a path across Japan,
China, India.
In the case of an occultation, the combined light of the asteroid and the star
will drop by 0.0 mag to 7.4 mag (the magnitude of the asteroid) for at most 80.7
seconds.
This update is based on UNSO/Flagstaff astrometry for the asteroid kindly
provided by Alice Monet, TMO astrometry for the asteroid kindly provided by Bill
Owen, historical astrometry from the MPC files (via AstDys), and the following
catalogs for the star position: UCAC.
The event at a glimpse
----------------------
* Rank: 100
* date and approx. time of event: 2010 Jun 06, 17:17 - 2010 Jun 06, 17:28 UT
* magnitude of target star: 10.7
* magnitude drop [mag]: 0.0
* estimated maximum duration : 80.7
* Moon: 33 % sunlit, 96° distance
* Sun: 166° distance
* rough path description: Japan, China, India
Additional comments
-------------------
Extremely low mag drop
The occultation path
--------------------
* approximate projected width [km]: 1525
* 1 sigma uncertainty interval [path widths]: +/- 0.04
* 1 sigma uncertainty interval [seconds]: +/- 3.5
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- .035 +/- .026)
* 1 sigma uncertainty ellipse (major, minor, PA): ( .035", .026", 92° )
* approx speed of asteroid's shadow [km/s]: 11.8963
* website for maps:
http://www.asteroidoccultation.com |
發表於 2010-6-3 16:14:27
發表於 2010-6-8 04:50:04
)