497 Jack's

Objectives

1. A scientific objective is to investigate Triton’s geologic past. (1,2)

2. A scientific objective is to estimate the age of Triton.(1,2)

3. A scientific objective is to investigate thermal characteristics of Triton.(2,3)

4. A scientific objective is to investigate atmospheric composition and

processes. (2)

5. A scientific objective is to search for organic compounds associated with life and assess potential

for habitability. (3,4)

6. A scientific objective is to investigate geologic, geochemical and hydrological processes. (2)

7. A scientific objective is to investigate subsurface layering and composition. (1,2)

8. A scientific objective is to search for subsurface ocean. (1,3)

Cryovolcanism

Cantaloupe Terrain

Master Equipment List

~ 250 km

QUESTIONS?

LORRII

Long Range Reconnaissance and Infrared Imager

TRIDENT

Impactor and Seismometer Probe

NOMAD

Atmosphere and Surface Spectrometer

Why Triton?

• Solar System Formation
• Theorized Kuiper Belt Object
• Characterizing Processes
• Cantaloupe Terrain
• Resurfacing
• Cryovolcanism
• Potential For Life
• Subsurface Ocean
• Organic material/ Implications for inner SS

REFERENCES

Conclusion

Agnor C., Hamilton D. (2006) Neptune’s capture of its moon Triton in a binary–planet gravitational encounter, Nature, 441, 192-194.

Cheng A. F., Weaver H. A., Conard S. J., et al. Long Range Reconnaissance Imager on New Horizon, The Johns Hopkins University Applied Physics Laboratory. Retrieved from: http://www.boulder.swri.edu/pkb/ssr/ssr-lorri.pdf

Ingersoll A. (1990) Dynamics of Triton’s atmosphere. Nature, 344, 315.

ISRO. (2018) Chandrayaan 1. ISRO. Retrieved from: http://isro.gov.in/Spacecraft/chandrayaan-1

Kargel J. (1994) Cryovolcanism on the icy satellites. Earth Moon and Planets, 67,101-113.

Mizutani, Hitoshi. (1995) Lunar-A. NASA Space Science Data Coordinated Archive. Retreived from: https://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=LUNAR-A

Nimmo F. (2014). Sloshing sea may heat wonky moon. New Scientist, 221(2957), 19

Nogueria E., Brasser R., Gomes R., (2011). Reassessing the Origin of Triton. Icarus. 1105.1179.

Schenk P., Jackson M. (1993) Diapirism on Triton: A record of crustal layering and instability. Geology, 21, 299.

Talbert, Tricia. (2015) Spacecraft and Instruments. New Horizon. NASA. Retreived from: https://www.nasa.gov/mission_pages/newhorizons/spacecraft/index.html .

Vandaele A., Daerden F., Drummond R., Neefs E. (2011) NOMAD, A Spectrometer suite for Nadir and Solar Occultation observations on the ExoMars Trace Gas Orbiter. Retrieved from http://www-mars.lmd.jussieu.fr/paris2011/abstracts/vandaele_paris2011.pdf

William D. (2008). Ranger 4. NASA Space Science Data Coordinated Archive. Retrieved from:

https://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1962-012A

http://wiki.seg.org/wiki/Dictionary:Single-ended_spread

https://www.dreamstime.com/stock-photo-trident-dramatic-background-poseidon-s-emerging-sea-photo-composite-image36301100

http://www.jaxa.jp/press/2004/08/img/20040811_sac_lunar-a_03pic.gif

http://www.jagranjosh.com/imported/images/E/Articles/Chand-Probe.jpg

https://en.wikipedia.org/wiki/Triton_(moon)#/media/File:Triton_moon_mosaic_Voyager_2_(large).jpg

• Potential For Life
• Past Origins
• Resurfacing
• Partial Imaging (40%)
• New Territory
• Low-Risk High-Reward
• All PSD goals satisfied

LORRII

Visual and Thermal Imager

• Long Range Reconnaissance and Infrared Imager
• Image entire surface with high resolution telescope

• Instrument Heritage
• New Horizon's LORRI (see picture to right)

Background

Credit: LORRI, Pluto Encounter, NASA

• Nitrogen Atmosphere
• Surface is Nitrogen Ice
• 99.5% total mass of all Neptunian satellites
• Retrograde Orbit

NOMAD

LORRII

• Detects temperature using infrared wavelengths
• Telescope scans surface and then separates wavelengths from infrared energy and sends data back to earth

• Aids all Objectives
• Low Risk
• Design Heritage
• ExoMars
• Venus Express

• Instrument Heritage
• This component was on the AIRS orbiter around Earth (took image to left)

NOMAD

3 Mode Spectrometer

Credit: AIRS Science Team, NASA/JPL

• Solar Occultation Mode
• Atmosphere trace gas vertical profile
• Atmospheric spectra time series cross sectional profile
• Ultraviolet to Visible
• Unique gases and spectra
• Limb, Nadir, and Occultation Mode
• Surface spectra mapping
• Cryovolcanic gas spectra profile
• Trident impact probe ejecta spectra and fresh crater spectra

TRIDENT

LORRII

• Achieves Objectives 7,8
• Low Risk
• Design Heritage
• Moon Impact Probe
• Lunar A

• Achieves Objectives 1,2 and 3
• Low Risk
• Design Heritage
• LORRI on New Horizon
• AIRS on NASA's Aqua Satellite

Credit: Jaxa.jp

TRIDENT

Conch Mission Proposal

Impact Probe

• TerRestrial Impact Dust ExcavatioN Tool
• Impactor with four connected seismometers
• Three channel seismometers
• Measures composition of ejecta
• Reflection seismology to estimate subsurface layers

TRITON

(Neptune's Largest Moon)

Jack Boyd

Lena Gibbs

Thomas Metos