A dataset provided by the European Space Agency

Name DDT_thmuelle_5
Title Herschel.s first observation of a potentially hazardous object: 2005 YU55


DOI https://doi.org/10.5270/esa-qmy7vp3
Author mueller, t.
Description We propose to observe the Apollo- and C-type asteroid 2005 YU55, which is on a Mars-Earth-Venus crossing orbit, during its upcoming exceptional Earth approach. In November 2011 it will pass within 0.85 lunar distances (0.85 LD) of the Earth, during which it will have a brief (less than one OD) observing window for Herschel. No asteroid of that size has ever been observed to pass inside 1 LD (and it will not happen again before 2028) although, according to recent orbit simulations, it does not pose any risk of an impact with Earth for the next 100 years.
The proposed 0.3 hours of Herschel-PACS observations will allow us to characterize the object.s size and its albedo. In combination with the foreseen radar measurements we will also be able to derive thermal surface properties which are strongly influencing non-gravitational forces, considered as one of the reasons for the large uncertainties in long-term orbit studies.
Publication Physical properties of asteroid 308635 (2005 YU55) derived from multi-instrument infrared observations during a very close Earth approach . Müller T. G. et al. . Astronomy & Astrophysics, Volume 558, id.A97, 12 pp. . 558 . 10.1051\/0004-6361\/201321664 . 2013A&A...558A..97M ,
Instrument PACS_PacsPhoto_largeScan
Temporal Coverage 2011-11-10T14:51:40Z/2011-11-10T15:00:43Z
Version SPG v14.2.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2012-05-10T14:56:43Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, mueller, t., 2012, DDT_thmuelle_5, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-qmy7vp3