Ceres & Pluto (and many, many, many more) Damian G. Allis, Ph.D. - - PowerPoint PPT Presentation

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Ceres & Pluto (and many, many, many more) Damian G. Allis, Ph.D. - - PowerPoint PPT Presentation

Sep 29, 2023 346 likes •933 views

A Big Year For Dwarf Planets: Highlights Of The NASA Missions To Ceres & Pluto (and many, many, many more) Damian G. Allis, Ph.D. NASA Solar System Ambassador Director, CNYO CNY Observers & Observing 1 Promoting Amateur Astronomy And

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CNY Observers & Observing

Promoting Amateur Astronomy And Space Science In Central New York

A Big Year For Dwarf Planets: Highlights Of The NASA Missions To

Ceres & Pluto

(and many, many, many more)

Damian G. Allis, Ph.D.

NASA Solar System Ambassador Director, CNYO

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CNY Observers & Observing

Promoting Amateur Astronomy And Space Science In Central New York

Ceres & Pluto

(and many, many, many more)

Damian G. Allis, Ph.D.

NASA Solar System Ambassador

  • Dept. of Chemistry, Syracuse University

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The Next Hour Or So

  • Solar System Refresher
  • Ceres – The Planet That Couldn’t
  • Dawn @ Ceres
  • Pluto – The Planet That Ain’t
  • New Horizons @ Pluto
  • “The Lollipop Guild”
  • Final Thoughts

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Sloan Digital Sky Survey

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PNSA “A RELATION BETWEEN DISTANCE AND RADIAL VELOCITY AMONG EXTRA-GALACTIC NEBULAE” PNAS, Vol. 15, No. 3, 1929

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Sloan Digital Sky Survey

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9 map.gsfc.nasa.gov/m_ig/030644/030644.html

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en.wikipedia.org/wiki/Observable_universe

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en.wikipedia.org/wiki/Observable_universe

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M31 (and M32 and M110)

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en.wikipedia.org/wiki/Observable_universe

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Astrophysical Journal, Vol. 801, pg. 105, 2015

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en.wikipedia.org/wiki/Observable_universe

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18 http://www.universetoday.com/32522/oort-cloud/ https://en.wikipedia.org/wiki/Oort_cloud

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en.wikipedia.org/wiki/Observable_universe

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http://www.paulschow.com/2013/03/us-sized-scale-model-solar-system.html 20

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Ceres

(and the Asteroid Belt)

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www.nature.com/nature/journal/v505/n7485/full/nature12908.html 23

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www.nasa.gov/mission_pages/spitzer/news/spitzervega20130108.html 24

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  • “Nearly Empty”
  • Total Composition = 4% The Moon
  • 1 km-Sized Objects = 8 Earth-Moon

Separations (on average)

  • Carbonaceous, Silicate, and

Metallic Compositions

  • Key Players – Ceres, Vesta, Pallas,

Hygiea, Eros, Ida…

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http://www.universetoday.com/32856/asteroid-belt/ 26

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Ceres Background:

  • Fr. Giuseppe Piazzi,

1 January 1801 Palermo, Italy Thought is was a planet, but then… “Binocular Object” Orbital Period: 4.6 yr Synodic Period: 1.3 yr

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https://en.wikipedia.org/wiki/Ceres_%28dwarf_planet%29 28

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https://en.wikipedia.org/wiki/Ceres_%28dwarf_planet%29 29

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https://www.youtube.com/watch?v=wVL0ZvKKoUE

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Dawn Mission

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Mission Details: Launch – 27 Sept 2007 Arrival @ Vesta – 16 July 2011 Arrival @ Ceres – 6 March 2015 End-Of-Line – Permanent Orbit

www.rocketstem.org/2015/03/01/exploring-the-dawn-of-the-solar-system/ 35

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What We Know

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38 http://www.space.com/22891-ceres-dwarf-planet.html

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Pluto

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ry

Pluto Background:

Clyde Tombaugh, 18 February 1930 Lowell Observatory, Flagstaff AZ “Big Scope Object” Orbital Period: 248 yr Synodic Period: 367 dy

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ry

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Odd Orbit

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What Makes A Planet?

Orbit the Sun Spherical Shape (from gravity) “Cleared the neighborhood” of its orbit

44 http://www.universetoday.com/13573/why-pluto-is-no-longer-a-planet/

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Not all That (other objects)

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After Demotion (Hubble)

www.nasa.gov/images/content/571868main_i1123ay.jpg 46

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www.wired.com/2015/07/pluto-new-horizons/ 48

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What We Know

www.youtube.com/watch?v=mfQq2b4VT84 50

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Geology

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Announced 20 Nov, pluto.jhuapl.edu/

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Clyde On The Ride

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Many, Many, Many More…

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Mostest Distant Yet (Until the next one)

134340 Pluto, a dwarf planet (225088) 2007 OR10 the largest object in the Solar System without a name (15760) 1992 QB1, the prototype cubewano, the first Kuiper belt object discovered after Pluto 1998 WW31, the first binary Kuiper belt object discovered after Pluto 79360 Sila–Nunam, another binary Kuiper belt planet with similar both parts (47171) 1999 TC36, almost triple Kuiper belt (15874) 1996 TL66, the first object to be identified as a scattered disc object (48639) 1995 TL8 has a very large satellite (385185) 1993 RO, the next plutino discovered after Pluto 20000 Varuna and 50000 Quaoar, large cubewanos 90482 Orcus and 28978 Ixion, large plutinos 90377 Sedna, a distant object, proposed for a new category named extended scattered disc (E-SDO), detached objects, distant detached objects (DDO) or scattered-extended in the formal classification by DES 120347 Salacia, large cubewano with a large moon 136108 Haumea, a dwarf planet, the fourth-largest known trans-Neptunian object. Notable for its two known satellites and unusually short rotation period (3.9 h). 136199 Eris, a dwarf planet, a scattered disc object, and currently the most massive known trans-Neptunian object. It has one known satellite, Dysnomia. 136472 Makemake, a dwarf planet, a cubewano, and the third-largest known trans- Neptunian object 2004 XR190, a scattered disc object following a highly inclined but nearly circular orbit (87269) 2000 OO67 and (148209) 2000 CR105, remarkable for their eccentric 2008 KV42, the first retrograde TNO, having an orbital inclination of i = 104° 2012 VP113, a likely dwarf planet with the greatest perihelion of any known TNO V774104, at ~103 AU the currently most distant observable TNO, based on discoveries up to

scitechdaily.com/distant-dwarf-planet-discovered-beyond-known-edge-solar-system/ 55

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Final Thoughts

  • Earth’s Rotation At 43o North – 1500 km/hour
  • Earth’s Motion Around Sun – 107,000 km/hour
  • Sun’s Motion In Milky Way – 792,000 km/hour
  • Milky Way In “The Universe” – 1,987,200 km/hour
  • Sitting Here – 2,887,700 km

(around the Earth 72 times)

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CNY Observers & Observing

Promoting Amateur Astronomy And Space Science In Central New York

Ceres & Pluto

(and many, many, many more)

Damian G. Allis, Ph.D.

NASA Solar System Ambassador

  • Dept. of Chemistry, Syracuse University

www.cnyo.org info@cnyo.org

(facebook, twitter, google, youtube)

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