J/ApJS/236/18 OSSOS. VII. TNOs complete data release (Bannister+, 2018)
OSSOS.
VII. 800+ trans-Neptunian objects-the complete data release.
Bannister M.T., Gladman B.J., Kavelaars J.J., Petit J.-M., Volk K.,
Chen Y.-T., Alexandersen M., Gwyn S.D.J., Schwamb M.E., Ashton E.,
Benecchi S.D., Cabral N., Dawson R.I., Delsanti A., Fraser W.C., Granvik M.,
Greenstreet S., Guilbert-Lepoutre A., Ip W.-H., Jakubik M., Jones R.L.,
Kaib N.A., Lacerda P., Van Laerhoven C., Lawler S., Lehner M.J., Lin H.W.,
Lykawka P.S., Marsset M., Murray-Clay R., Pike R.E., Rousselot P.,
Shankman C., Thirouin A., Vernazza P., Wang S.-Y.
<Astrophys. J. Suppl. Ser., 236, 18 (2018)>
=2018ApJS..236...18B 2018ApJS..236...18B
ADC_Keywords: Minor planets; Surveys; Photometry, RI
Keywords: Kuiper belt: general ; surveys
Abstract:
The Outer Solar System Origins Survey (OSSOS), a wide-field imaging
program in 2013-2017 with the Canada-France-Hawaii Telescope, surveyed
155deg2 of sky to depths of mr=24.1-25.2. We present 838 outer
solar system discoveries that are entirely free of ephemeris bias.
This increases the inventory of trans-Neptunian objects (TNOs) with
accurately known orbits by nearly 50%. Each minor planet has 20-60
Gaia/Pan-STARRS-calibrated astrometric measurements made over 2-5
oppositions, which allows accurate classification of their orbits
within the trans-Neptunian dynamical populations. The populations
orbiting in mean-motion resonance with Neptune are key to
understanding Neptune's early migration. Our 313 resonant TNOs,
including 132 plutinos, triple the available characterized sample and
include new occupancy of distant resonances out to semimajor axis a
∼130au. OSSOS doubles the known population of the nonresonant Kuiper
Belt, providing 436 TNOs in this region, all with exceptionally
high-quality orbits of a uncertainty σa≤0.1%; they show that
the belt exists from a≳37au, with a lower perihelion bound of 35au.
We confirm the presence of a concentrated low-inclination a∼44 au
"kernel" population and a dynamically cold population extending beyond
the 2:1 resonance. We finely quantify the survey's observational
biases. Our survey simulator provides a straightforward way to impose
these biases on models of the trans-Neptunian orbit distributions,
allowing statistical comparison to the discoveries. The OSSOS TNOs,
unprecedented in their orbital precision for the size of the sample,
are ideal for testing concepts of the history of giant planet
migration in the solar system.
Description:
All observations were acquired with the 0.184"/pixel MegaCam imager of
CFHT on Maunakea, Hawaii. The Outer Solar System Origins Survey
(OSSOS) surveyed the distant solar system objects present in eight
regions of sky ("blocks," each ∼20deg2).
Discovery observations were made when each block of sky came to
opposition, and they set the limiting magnitudes of the survey. OSSOS
observed in the r-band (λ∼640nm) MegaCam filters R.9601 and
R.9602, which approximate the r-band Sloan Digital Sky Survey (SDSS)
response, and in a "w" wide-band filter, GRI.MP9605.
Considering purely the overall data set of images, the dense OSSOS
cadence provided 20-60 epochs across 2-5yr, each to an r- or w-band
∼3σ depth of magnitudes 24.1-25.3 across a substantial region of
sky: ∼170deg2 in the vicinity of the ecliptic. More than 8000 images
were acquired.
Bannister+ (2016, J/AJ/152/70) described the observations of the first
two blocks (13AE and 13AO) in 2013-2015. We now describe the
observations of the remaining six blocks, which had their discovery
observations in the semesters 2013B, 2014B, 2015A, and 2015B. We also
detail observations made for OSSOS with CFHT in 2014-2017 outside of
the Large Program. See Section 2 for further details.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
t3ens.dat 268 1148 Orbit and discovery properties of the
characterized Outer Solar System Origins Survey
(OSSOS) and other survey objects
t3char.dat 268 840 Orbit and discovery properties of the
characterized OSSOS minor planets
t3unc.dat 268 109 Orbit and discovery properties of the
uncharacterized OSSOS objects
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See also:
J/AJ/152/111 : A 2011-2013 survey of TNOs (Alexandersen+, 2016)
J/AJ/152/70 : Outer Solar System Origins Survey (OSSOS) (Bannister+, 2016)
J/AJ/152/1 : Spectroscopy of EG And over roughly 14 years (Kenyon+, 2016)
J/AJ/154/62 : Orbital parameters of Kuiper Belt objects (Volk+, 2017)
J/ApJS/234/37 : R-band K2 photometry of main-belt asteroids (Molnar+, 2018)
J/ApJS/244/19 : OSSOS. XII. Subaru/HSC obs. of 65 TNOs (Alexandersen+, 2019)
http://www.ossos-survey.org/ : Outer Solar System Origins Survey home page
http://minorplanetcenter.net/iau/lists/MPLists.htm : MPC lists of minor planets
Byte-by-byte Description of file: t3*.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- cl Orbital population/class (1)
5- 5 A1 --- p [Nimox] Possibly additional information
based on class (2)
8- 9 I2 --- j [1/35]?=-1 Resonant object is in
the j:k resonance
12- 13 I2 --- k [1/15]?=-1 Resonant object is in
the j:k resonance
15- 15 A1 --- sh [ISx] Orbit classification status (3)
16- 16 A1 --- n_sh H: human operator intervened and set
the given orbit security status
18- 27 A10 --- ID Object identifier/designation (4)
29- 33 F5.2 mag mag [20.8/25.7] Cleaned mean magnitude DURING
DISCOVERY, excluding flagged observations
35- 39 F5.3 mag e_mag [0/0.6] Uncertainty in mag and in Hsur
41- 41 A1 --- Filt [Rgr] Filter used in discovery observation
43- 47 F5.2 mag Hsur [3.6/16.4] Surmised Absolute magnitude H,
in discovery filter
49- 55 F7.3 AU Dist [6/83] Object distance at discovery (5)
57- 63 F7.3 AU e_Dist [0/8.4] Uncertainty in Dist (6)
65- 68 I4 --- Nobs [3/107] Number of observations available
70- 78 F9.4 yr time [0.0001/24] Length of measured orbital
arc (last-first observation)
80- 85 F6.3 arcsec av-xres [0/1] Mean orbit-fit residual, RA
87- 92 F6.3 arcsec av-yres [0.003/0.9] Mean orbit-fit residual, DEC
94- 99 F6.3 arcsec max-x [0/1.6] Maximum orbit-fit residual, RA
101-106 F6.3 arcsec max-y [0.005/1.3] Maximum orbit-fit residual, DEC
108-118 F11.6 AU a [9/743] Semimajor axis (5)
120-129 F10.4 AU e_a [0.0001/31] Uncertainty in a (6)
131-139 F9.6 --- e [0.002/1] Orbital eccentricity (5)
141-149 F9.6 --- e_e [9e-6/7.5] Uncertainty in e (6)
151-157 F7.3 deg i [0.03/179] Inclination to the ecliptic (5)
159-165 F7.3 deg e_i [0/55] Uncertainty in i (6)
167-174 F8.3 deg Omega [0.1/360] Longitude of ascending node
176-183 F8.3 deg e_Omega [0/1705.3] Uncertainty in Omega
185-192 F8.3 deg omega [0.4/360] Argument of perihelion
194-202 F9.3 deg e_omega [0/3712] Uncertainty in omega
204-213 F10.3 d tperi [-1029.5/109421.5] Modified Julian Date of
osculating perihelion passage
215-224 F10.3 d e_tperi [0.01/576875] Uncertainty in tperi
226-232 F7.3 deg RAdeg Right ascension (J2000) at mean equinox
of discovery
234-240 F7.3 deg DEdeg Declination (J2000) at mean equinox
of discovery
242-254 F13.5 d JD Central Julian Date of
first discovery image
256-260 F5.2 arcsec/h rate [1.6/14] Angular rate of sky motion
at discovery
262-268 A7 --- MPC Compact MPC designation
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Note (1): Orbital population/Dynamical class, based on scheme from
Gladman et al. (2008ssbn.book...43G 2008ssbn.book...43G), "The Solar System beyond Neptune".
Code as follows:
cen = centaur
sca = scattering disk object
cla = classical belt
res = in mean-motion resonance
det = detached object ( a>a_(2:1) and e>0.24 and non-resonant and
non-scattering )
jco = Jupiter Coupled
xxx = arc too short to make meaningful classification
Note (2): Possibly additional information based on class; as follows:
x = no information (always "x" for centaur, scattering disk or
detached objects)
U = Mean-motion resonance occupancy is checked for Uranus
N = Mean-motion resonance occupancy is checked for Neptune
i = classical belt with inner a < a_(3:2 resonance)
m = classical belt with inner a_(3:2 resonance) < a < a_(2:1 resonance)
o = classical belt with outer a < a_(2:1 resonance)_ and not detached.
Note (3): Orbit classification status as follows:
I = the orbit classification is currently insecure;
S = the orbit classification is secure;
x = no information.
Note (4): Survey designations here based on their OSSOS discovery, with a format
"o" for OSSOS, "u" for uncharacterized, the last digit of the year in
which the object was discovered by OSSOS (3-6), the block ID letter
(e,o) and the sequential number to give unique identifiers,
"PD" indicates previous discovery. See http://www.ossos-survey.org/tnodb
for an updating correspondence list to MPC. Object beginning "KO2" are
Presurvey objects (Jones et al., 2006Icar..185..508J 2006Icar..185..508J); Object
beginning "L" are CFEPS objects (Petit+ 2011AJ....142..131P 2011AJ....142..131P);
Object beginning "HL" are Hilat Survey objects (Petit+ 2017AJ....153..236P 2017AJ....153..236P);
Object beginning "ma" are from the PhD thesis of (Alexandersen+
2016, J/AJ/152/111)
Note (5): J2000 ecliptic barycentric coordinates.
Note (6): Uncertainties from the covariance matrix of the orbital parameter
confidence regions as determined by the method described in Bernstein
and Khushalani (2000AJ....120.3323B 2000AJ....120.3323B).
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History:
From electronic version of the journal
References:
Bannister et al. Paper I. 2016AJ....152...70B 2016AJ....152...70B Cat. J/AJ/152/70
Shankman et al. Paper II. 2016AJ....151...31S 2016AJ....151...31S
Volk et al. Paper III. 2016AJ....152...23V 2016AJ....152...23V
Bannister et al. Paper IV. 2016AJ....152..212B 2016AJ....152..212B
Bannister et al. Paper V. 2017AJ....153..262B 2017AJ....153..262B
Shankman et al. Paper VI. 2017AJ....154...50S 2017AJ....154...50S
Bannister et al. Paper VII. 2018ApJS..236...18B 2018ApJS..236...18B This catalog
Lawler et al. Paper VIII. 2018AJ....155..197L 2018AJ....155..197L
Volk et al. Paper IX. 2018AJ....155..260V 2018AJ....155..260V
Cabral et al. Paper XI. 2019A&A...621A.102C 2019A&A...621A.102C
Alexandersen et al. Paper XII. 2019ApJS..244...19A 2019ApJS..244...19A Cat. J/ApJS/244/19
Lawler et al. Paper XIII. 2019AJ....157..253L 2019AJ....157..253L
van Laerhoven et al. Paper XIV. 2019AJ....158...49V 2019AJ....158...49V
Kaib et al. Paper XV. 2019AJ....158...43K 2019AJ....158...43K
Chen et al. Paper XVIII. 2019AJ....158..214C 2019AJ....158..214C
Nesvorny et al. Paper XIX. 2019AJ....158..132N 2019AJ....158..132N
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 18-Feb-2020