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Upcoming

  • Aug 2014-Jan 2015: CFHT provides additional astrometry for 13B discoveries
  • Jan-Aug 2015: CFHT takes discovery on 15A blocks

Data Releases

Collaboration

The Teams will receive the object list for each semester's discoveries as a summary table of internal designations with orbital elements and uncertainties. At release, a typical object will have a semimajor axis uncertainty of 0.1-1%. Dynamical classification using the SSBN 2008 classification will be provided. Core will also provide access to the full astrometry and the imaging data for each detection.

Some topic teams will then wish to propose observations to other telescopes for next-semester studies of the sample; this will likely be the only time when the topic teams have a proposal advantage over the world. At the time of proposal, the ephemerides of most objects will be good to +/- < 30"; the half-year-later CFHT recovery of all objects will have dropped these uncertainties to a few arcseconds by the time P.I.-led exploitation observations occur.

Public

We aim to submit all observations of a given semester to the MPC 6 months after the end of the semester, except for the first semester (2013), which will be delayed to be a year. (So in Aug 2014 will will submit all 2013A and 2013B objects). This gives observers on quarterly systems a chance to propose for telescope deadlines a cycle later with no competition. It also gives the theory teams 5 months to work before the world sees the MPC release. Recovery observations will be sent as a batch to the MPC in the same manner, e.g. an MPC submission in Feb 2015 for the August 2014-Jan 2015 recoveries of the 2013B detections.

CFHT imaging become public a year after the end of each semester, e.g. on August 1, 2014, the 2013A CFHT imaging become public to the world.

Collaboration Teams

The principle contact for each team member should be their topic team's leader.

Team leaders can contact the Core or all other team leaders.

Full list of OSSOS collaborators
Core
CFHT image acquisition, moving object detection, orbit linkage, characterisation. (Teleconference minutes)
Binaries
mutual orbits, separation, colours. Leader: A. Parker.
Cometary Activity
Search for coma. Leader: P. Rousselot.
Light curves
Time variable TNOs, phase curves. Leader: S. Benecchi.
Catalogs
Objects slower than OSSOS rate cut) + non-moving object variation (eg. variable stars). Leader: L. Jones.
Nearby objects
Search for and tracking of objects moving faster than OSSOS cuts (roughly, inside 8 AU). SUSPENDED.
Occultations
Predictions, observing campaigns. Leader: W. Fraser.
Resonant Populations
relative populations, libration amplitude distributions. Leader: R. Murray-Clay.
Scattering
Centaurs, Scattering Disk, Oort cloud connection. Leader: N. Kaib
Classical Belt, structure and SDF
H-mag distributions, dependence on class. ABSORBED INTO CORE: Petit as leader.
Surfaces
Colours, NIR spectra. Leader: A. Delsanti.
Thermal Modeling
Thermal evolution of objects. Leader: A. Guilbert

How to join OSSOS

click on title at left for a information page.

Publications and Proposals

Survey

Observations are ongoing! Check the Survey Overview for our progress in getting & processing photons.

The project is surveying four fields in 2013-14, and a new set of four in 2015-16. For great detail, see the survey draft and the Accepted Proposal (access restricted to collaboration only).

Figures for presentations etc.

2013A

  • April 2013 preliminary field layout plot (here for reference. As in the proposal; varied very slightly from the observed location)
  • April 2013 observed plot - as the O and E fields have oppositions a month apart, the E field is shown at its 9 April moon-dark location, and the O field at its 8 May moon-dark location. The known TNOs plotted are for new moon, May 9.
  • 13AE discoveries plot - all positions for 9 April 2013

2013B

Timeline

  • June 6/2012: OSSOS was number 1 ranked CFHT Large program. 560hr awarded.
  • Feb. 2013 - Aug 2013 : 2013A data acquisition.
  • Aug 2013 - late Jan 2014 : 2013B data acquisition.
  • Oct 6/2013: Second OSSOS team meeting, at 2013 DPS meeting in Denver.
  • June 25-27 2014: The OSSOS team workshop in Beaune, France. Meeting Website

Help

Consult the User's Guide for information on using the wiki software.