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Pluto’s Expanding Brood 2 newer moons: Nix and Hydra Weaver, et al. (2006), Nature, 439, 943–945 Hubble Space Telescope images.

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Presentation on theme: "Pluto’s Expanding Brood 2 newer moons: Nix and Hydra Weaver, et al. (2006), Nature, 439, 943–945 Hubble Space Telescope images."— Presentation transcript:

1 Pluto’s Expanding Brood 2 newer moons: Nix and Hydra Weaver, et al. (2006), Nature, 439, 943–945 Hubble Space Telescope images

2 Occultation of an 11th mag star by Nix, March 3/4, 2009 Information from Thomas Widemann and Bruno Sicardy Air Force AEOS, 3.7 m, Haleakala; problems with funding Windward CC, 16”, Oahu; clouded up (Tholen, Ciotti, Kessler, G. Elliott) PanSTARRS, Haleakala; weather problem IRTF, 3 m, Mauna Kea our POETS; cloudy (Amanda Gulbis) CFHT, 3.6 m, Mauna Kea; cloudy (T. Widemann, B. Sicardy, C. Veillet) Faulkes, 2 m, Haleakala; patchy (T. Lister in liaison with J. Pasachoff) credit: NASA, ESA, H. Weaver (JHU/APL), A. Stern (then SwRI), and the HST Pluto Companion Search Team; 15 February 2006, Hubble ACS/HRC

3 Sicardy and Widemann's prediction

4 Predicted occultation by Nix, March 3/4

5 607 s streak, 13:48:48–13:58:55

6


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