Discovery and physical characterization of a large scattered disk object at 92 au

D. W. Gerdes; M. Sako; S. Hamilton; K. Zhang; T. Khain; J. C. Becker; J. Annis; W. Wester; G. M. Bernstein; C. Scheibner; L. Zullo; F. Adams; E. Bergin; A. R. Walker; J. H. Mueller; T. M. C. Abbott; F. B. Abdalla; S. Allam; K. Bechtol; A. Benoit-lévy; E. Bertin; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; C. E. Cunha; L. N. Da Costa; S. Desai; H. T. Diehl; T. F. Eifler; B. Flaugher; J. Frieman; J. García-bellido; E. Gaztanaga; D. A. Goldstein; D. Gruen; J. Gschwend; G. Gutierrez; K. Honscheid; D. J. James; S. Kent; E. Krause; K. Kuehn; N. Kuropatkin; O. Lahav; T. S. Li; M. A. G. Maia; M. March; J. L. Marshall; P. Martini; F. Menanteau; R. Miquel; R. C. Nichol; A. A. Plazas; A. K. Romer; A. Roodman; E. Sanchez; I. Sevilla-noarbe; M. Smith; R. C. Smith; M. Soares-santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; D. L. Tucker; Y. Zhang

doi:10.3847/2041-8213/aa64d8

Discovery and physical characterization of a large scattered disk object at 92 au

D. W. Gerdes, M. Sako, S. Hamilton, K. Zhang, T. Khain, J. C. Becker, J. Annis, W. Wester, G. M. Bernstein, C. Scheibner, L. Zullo, F. Adams, E. Bergin, A. R. Walker, J. H. Mueller, T. M. C. Abbott, F. B. Abdalla, S. Allam, K. Bechtol, A. Benoit-lévyE. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, C. E. Cunha, L. N. Da Costa, S. Desai, H. T. Diehl, T. F. Eifler, B. Flaugher, J. Frieman, J. García-bellido, E. Gaztanaga, D. A. Goldstein, D. Gruen, J. Gschwend, G. Gutierrez, K. Honscheid, D. J. James, S. Kent, E. Krause, K. Kuehn, N. Kuropatkin, O. Lahav, T. S. Li, M. A. G. Maia, M. March, J. L. Marshall, P. Martini, F. Menanteau, R. Miquel, R. C. Nichol, A. A. Plazas, A. K. Romer, A. Roodman, E. Sanchez, I. Sevilla-noarbe, M. Smith, R. C. Smith, M. Soares-santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, D. L. Tucker, Y. Zhang

Institute of Cosmology & Gravitation

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Abstract

We report the observation and physical characterization of the possible dwarf planet 2014 UZ₂₂₄ ("DeeDee"), a dynamically detached trans-Neptunian object discovered at 92 au. This object is currently the second-most distant known trans-Neptunian object with reported orbital elements, surpassed in distance only by the dwarf planet Eris. The object was discovered with an r-band magnitude of 23.0 in data collected by the Dark Energy Survey between 2014 and 2016. Its 1140 year orbit has (a,e,i) = 109 au,0.65, 26_∨{.}^∧{^o}8). It will reach its perihelion distance of 38 au in the year 2142. Integrations of its orbit show it to be dynamically stable on Gyr timescales, with only weak interactions with Neptune. We have performed follow-up observations with ALMA, using 3 hr of on-source integration time to measure the object's thermal emission in the Rayleigh–Jeans tail. The signal is detected at 7σ significance, from which we determine a V-band albedo of 13.1_∨{-2.4}^{^{+3.3}}(stat)_∨{-1.4}^{^{+2.0}}(sys) percent and a diameter of 635_∨{-61}^{^{+57}}(stat)_∨{-39}^{^{+32}}(sys) km, assuming a spherical body with uniform surface properties.

Original language	English
Article number	L15
Journal	The Astrophysical Journal
Volume	839
Issue number	1
DOIs	https://doi.org/10.3847/2041-8213/aa64d8
Publication status	Published - 12 Apr 2017

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Gerdes, D. W., Sako, M., Hamilton, S., Zhang, K., Khain, T., Becker, J. C., Annis, J., Wester, W., Bernstein, G. M., Scheibner, C., Zullo, L., Adams, F., Bergin, E., Walker, A. R., Mueller, J. H., Abbott, T. M. C., Abdalla, F. B., Allam, S., Bechtol, K., ... Zhang, Y. (2017). Discovery and physical characterization of a large scattered disk object at 92 au. The Astrophysical Journal, 839(1), Article L15. https://doi.org/10.3847/2041-8213/aa64d8

@article{ec1bbfd2fc68456baf676abc43dd64bd,

title = "Discovery and physical characterization of a large scattered disk object at 92 au",

abstract = "We report the observation and physical characterization of the possible dwarf planet 2014 UZ224 ({"}DeeDee{"}), a dynamically detached trans-Neptunian object discovered at 92 au. This object is currently the second-most distant known trans-Neptunian object with reported orbital elements, surpassed in distance only by the dwarf planet Eris. The object was discovered with an r-band magnitude of 23.0 in data collected by the Dark Energy Survey between 2014 and 2016. Its 1140 year orbit has (a,e,i) = 109 au,0.65, 26∨{.}∧{o}8). It will reach its perihelion distance of 38 au in the year 2142. Integrations of its orbit show it to be dynamically stable on Gyr timescales, with only weak interactions with Neptune. We have performed follow-up observations with ALMA, using 3 hr of on-source integration time to measure the object's thermal emission in the Rayleigh–Jeans tail. The signal is detected at 7σ significance, from which we determine a V-band albedo of 13.1∨{-2.4}^{+3.3}(stat)∨{-1.4}^{+2.0}(sys) percent and a diameter of 635∨{-61}^{+57}(stat)∨{-39}^{+32}(sys) km, assuming a spherical body with uniform surface properties.",

author = "Gerdes, {D. W.} and M. Sako and S. Hamilton and K. Zhang and T. Khain and Becker, {J. C.} and J. Annis and W. Wester and Bernstein, {G. M.} and C. Scheibner and L. Zullo and F. Adams and E. Bergin and Walker, {A. R.} and Mueller, {J. H.} and Abbott, {T. M. C.} and Abdalla, {F. B.} and S. Allam and K. Bechtol and A. Benoit-l{\'e}vy and E. Bertin and D. Brooks and Burke, {D. L.} and Rosell, {A. Carnero} and Kind, {M. Carrasco} and J. Carretero and Cunha, {C. E.} and Costa, {L. N. Da} and S. Desai and Diehl, {H. T.} and Eifler, {T. F.} and B. Flaugher and J. Frieman and J. Garc{\'i}a-bellido and E. Gaztanaga and Goldstein, {D. A.} and D. Gruen and J. Gschwend and G. Gutierrez and K. Honscheid and James, {D. J.} and S. Kent and E. Krause and K. Kuehn and N. Kuropatkin and O. Lahav and Li, {T. S.} and Maia, {M. A. G.} and M. March and Marshall, {J. L.} and P. Martini and F. Menanteau and R. Miquel and Nichol, {R. C.} and Plazas, {A. A.} and Romer, {A. K.} and A. Roodman and E. Sanchez and I. Sevilla-noarbe and M. Smith and Smith, {R. C.} and M. Soares-santos and F. Sobreira and E. Suchyta and Swanson, {M. E. C.} and G. Tarle and Tucker, {D. L.} and Y. Zhang",

year = "2017",

month = apr,

day = "12",

doi = "10.3847/2041-8213/aa64d8",

language = "English",

volume = "839",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing",

number = "1",

}

Gerdes, DW, Sako, M, Hamilton, S, Zhang, K, Khain, T, Becker, JC, Annis, J, Wester, W, Bernstein, GM, Scheibner, C, Zullo, L, Adams, F, Bergin, E, Walker, AR, Mueller, JH, Abbott, TMC, Abdalla, FB, Allam, S, Bechtol, K, Benoit-lévy, A, Bertin, E, Brooks, D, Burke, DL, Rosell, AC, Kind, MC, Carretero, J, Cunha, CE, Costa, LND, Desai, S, Diehl, HT, Eifler, TF, Flaugher, B, Frieman, J, García-bellido, J, Gaztanaga, E, Goldstein, DA, Gruen, D, Gschwend, J, Gutierrez, G, Honscheid, K, James, DJ, Kent, S, Krause, E, Kuehn, K, Kuropatkin, N, Lahav, O, Li, TS, Maia, MAG, March, M, Marshall, JL, Martini, P, Menanteau, F, Miquel, R, Nichol, RC, Plazas, AA, Romer, AK, Roodman, A, Sanchez, E, Sevilla-noarbe, I, Smith, M, Smith, RC, Soares-santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Tucker, DL & Zhang, Y 2017, 'Discovery and physical characterization of a large scattered disk object at 92 au', The Astrophysical Journal, vol. 839, no. 1, L15. https://doi.org/10.3847/2041-8213/aa64d8

TY - JOUR

T1 - Discovery and physical characterization of a large scattered disk object at 92 au

AU - Gerdes, D. W.

AU - Sako, M.

AU - Hamilton, S.

AU - Zhang, K.

AU - Khain, T.

AU - Becker, J. C.

AU - Annis, J.

AU - Wester, W.

AU - Bernstein, G. M.

AU - Scheibner, C.

AU - Zullo, L.

AU - Adams, F.

AU - Bergin, E.

AU - Walker, A. R.

AU - Mueller, J. H.

AU - Abbott, T. M. C.

AU - Abdalla, F. B.

AU - Allam, S.

AU - Bechtol, K.

AU - Benoit-lévy, A.

AU - Bertin, E.

AU - Brooks, D.

AU - Burke, D. L.

AU - Rosell, A. Carnero

AU - Kind, M. Carrasco

AU - Carretero, J.

AU - Cunha, C. E.

AU - Costa, L. N. Da

AU - Desai, S.

AU - Diehl, H. T.

AU - Eifler, T. F.

AU - Flaugher, B.

AU - Frieman, J.

AU - García-bellido, J.

AU - Gaztanaga, E.

AU - Goldstein, D. A.

AU - Gruen, D.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Honscheid, K.

AU - James, D. J.

AU - Kent, S.

AU - Krause, E.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Lahav, O.

AU - Li, T. S.

AU - Maia, M. A. G.

AU - March, M.

AU - Marshall, J. L.

AU - Martini, P.

AU - Menanteau, F.

AU - Miquel, R.

AU - Nichol, R. C.

AU - Plazas, A. A.

AU - Romer, A. K.

AU - Roodman, A.

AU - Sanchez, E.

AU - Sevilla-noarbe, I.

AU - Smith, M.

AU - Smith, R. C.

AU - Soares-santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E. C.

AU - Tarle, G.

AU - Tucker, D. L.

AU - Zhang, Y.

PY - 2017/4/12

Y1 - 2017/4/12

N2 - We report the observation and physical characterization of the possible dwarf planet 2014 UZ224 ("DeeDee"), a dynamically detached trans-Neptunian object discovered at 92 au. This object is currently the second-most distant known trans-Neptunian object with reported orbital elements, surpassed in distance only by the dwarf planet Eris. The object was discovered with an r-band magnitude of 23.0 in data collected by the Dark Energy Survey between 2014 and 2016. Its 1140 year orbit has (a,e,i) = 109 au,0.65, 26∨{.}∧{o}8). It will reach its perihelion distance of 38 au in the year 2142. Integrations of its orbit show it to be dynamically stable on Gyr timescales, with only weak interactions with Neptune. We have performed follow-up observations with ALMA, using 3 hr of on-source integration time to measure the object's thermal emission in the Rayleigh–Jeans tail. The signal is detected at 7σ significance, from which we determine a V-band albedo of 13.1∨{-2.4}^{+3.3}(stat)∨{-1.4}^{+2.0}(sys) percent and a diameter of 635∨{-61}^{+57}(stat)∨{-39}^{+32}(sys) km, assuming a spherical body with uniform surface properties.

AB - We report the observation and physical characterization of the possible dwarf planet 2014 UZ224 ("DeeDee"), a dynamically detached trans-Neptunian object discovered at 92 au. This object is currently the second-most distant known trans-Neptunian object with reported orbital elements, surpassed in distance only by the dwarf planet Eris. The object was discovered with an r-band magnitude of 23.0 in data collected by the Dark Energy Survey between 2014 and 2016. Its 1140 year orbit has (a,e,i) = 109 au,0.65, 26∨{.}∧{o}8). It will reach its perihelion distance of 38 au in the year 2142. Integrations of its orbit show it to be dynamically stable on Gyr timescales, with only weak interactions with Neptune. We have performed follow-up observations with ALMA, using 3 hr of on-source integration time to measure the object's thermal emission in the Rayleigh–Jeans tail. The signal is detected at 7σ significance, from which we determine a V-band albedo of 13.1∨{-2.4}^{+3.3}(stat)∨{-1.4}^{+2.0}(sys) percent and a diameter of 635∨{-61}^{+57}(stat)∨{-39}^{+32}(sys) km, assuming a spherical body with uniform surface properties.

UR - http://sro.sussex.ac.uk/68034/

U2 - 10.3847/2041-8213/aa64d8

DO - 10.3847/2041-8213/aa64d8

M3 - Article

SN - 0004-637X

VL - 839

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

M1 - L15

ER -

Discovery and physical characterization of a large scattered disk object at 92 au

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