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Observations are ongoing for 13B discoveries! Check the Survey Overview for our progress in getting & processing photons.

Upcoming

• Feb-June 2014: CFHT provides additional astrometry for 13A discoveries.
• August 2014: All OSSOS imaging on 13A targets will have been acquired.

Data Releases

Collaboration Data Releases

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 +/- <1 arcmin; 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.

• 2013AE data release (access restricted to collaboration only)

Public data releases

We aim to submit all observations of a given semester to the MPC 6 months after the end of the semesters; e.g. for 2013A, an MPC submission at the end of January 2014. 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 August 2014 for the Feb-July 2014 recoveries of the 2013 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.

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

Publications and Proposals

• Survey and Team logos for use in presentations etc (high-res PNGs).
• The font is (free!) Sofia Pro Light. Download it here.

Survey

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

• October 2013 field layout plot. The field positions and known TNO locations at October 2013 new moon (4 October).

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.

Help

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