Summary for : (47171) 1999 TC36

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
TNO--- | --0.38 ± 0.14   (C)37 %416.0 ± 49.111.8 %1.42e+19 ± 1.66e+1812 %SEVM
TNO--- | --0.38 ± 0.17   (C)46 %416.3 ± 63.915.4 %1.42e+19 ± 2.52e+172 %Sw.avg
TNO-0.41 ± 0.03   (B)7 %402.5 ± 9.42.3 %1.42e+19 ± 2.00e+171 %C?

Average asteroid densities (g/cm^3):
C = 1.3 ± 0.6, B = 2.4 ± 0.5, S = 2.7 ± 0.5, M = 3.5 ± 1.0, P = 2.8 ± 1.6, X = 1.9 ± 0.8, Xc = 4.9 ± 0.9, Xk = 4.2 ± 0.7 (Ref)

Additional resources:
3D Model | JPL New Horizons | Minor Planet Center | Wikipedia (these auto-generated links might not work)

Note: The density estimates have been ranked from (A) to (E), corresponding to the relative error: (B) less than 20%, (C) between 20 and 50%, (D) between 50 and 100%, and (E) more than 100%. (A) stands for (presumably) reliable estimates (accuracy better than 20%), based on more than 5 mass estimates and 5 diameter estimates, or a spacecraft encounter. Apparently unrealistic densities (ρ > 8) are tagged with (X).

EVM: average by using the Expected Value Method (Ref). w.avg: weighted average (with w = 1/err^2).

T.T: Tholen Tax Class. T.B: Bus & Binzel Tax Class. T T.L: S3OS2 Lazarro (Tholen) Tax Class. T.L B: S3OS2 Lazarro (Bus & Binzel) Tax Class. T.D: DeMeo Tax Class.

Ref: S = SiMDA, C = Carry (2012)

Diameter estimates

DesignationDiameter / Err (km)ΔD/DMethodYearRefNχ2Use
(47171) 1999 TC36609.00 ± 70.0011.5 % STM2004D1112 7.60 1
(47171) 1999 TC36405.00 ± 55.0013.6 % NEATM2006D29 0.04 2
(47171) 1999 TC36414.60 ± 38.599.3 % NEATM2008D51 0.00 3
(47171) 1999 TC36393.10 ± 26.006.6 % STM2012D86 0.78 4

plot, average diameter and derived density

All

Notes (N):
1: This estimate is discarded for the average diameter (and derived density) calculation in Carry (2012).
2: This estimate is discarded for the average diameter (and derived density) calculation in SiMDA (catalog).

NEATM : Near-Earth Asteroid Thermal Model. STM : Standard Thermal Model.


EVM diam. average D = (416.0 ± 49.06) km   (ΔD/D = 12%, SNR = 8.48) Derived bulk density ρ = (0.38 ± 0.14) g/cm3   (Δρ/ρ = 37%, SNR = 2.7)


References
D11(2004):Altenhoff, W.J., Bertoldi, F., Menten, K.M., 2004. Size estimates of some optically bright KBOs. Astronomy and Astrophysics 415, 771–775.
D29(2006):Stansberry, J.A., Grundy, W.M., Margot, J.L., Cruikshank, D.P., Emery, J.P., Rieke, G.H., Trilling, D.E., 2006. The Albedo, Size, and Density of Binary Kuiper Belt Object (47171) 1999 TC 36 . Astrophysical Journal 643, 556–566.
D51(2008):Stansberry, J., Grundy, W., Brown, M.E., Cruikshank, D.P., Spencer, J.R., Trilling, D., Margot, J.L., 2008. Physical Properties of Kuiper Belt and Centaur Objects: Constraints from the Spitzer Space Telescope. The Solar System Beyond Neptune , 161–179.
D86(2012):Mommert, M., Harris, A.W., Kiss, C., Pál, A., Santos Sanz, P., Stansberry, J., Delsanti, A., Vilenius, E., Müller, T., Peixinho, N., Lellouch, E., Szalai, N. amd Henry, F., Bönhardt, H., Duffard, R., Fornasier, S., Hartogh, P., Mueller, M., Ortiz, J.L., Protopapa, S., Rengel, M., Thirouin, A., 2012. TNOs are Cool: A survey of the trans-Neptunian region V. Physical characterization of 18 Plutinos using Herschel PACS observations. Astronomy & Astrophysics, 541, id.A93, 17 pp.

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(47171) 1999 TC361.39e+19 ± 2.50e+1818 %BinImg 2004M400.01 1
(47171) 1999 TC361.44e+19 ± 2.20e+1815 %BinImg 2006M540.01 2

plot, average mass and derived density

All

Notes (N):
1: This estimate is discarded for the average mass (and derived density) calculation in Carry (2012).
2: This estimate is discarded for the average mass (and derived density) calculation in SiMDA (catalog).
3: This estimate is an average of individual solutions listed before under the same reference (e.g. M125).

BinImg : Binary imaged at optical wavelength.


EVM mass average M = (1.415 ± 0.166) × 1019 kg   (ΔM/M = 12%, SNR = 8.5) Derived bulk density ρ = (0.38 ± 0.14) g/cm3   (Δρ/ρ = 37%, SNR = 2.7)


References
M40(2004):Margot, J.L., Brown, M.E., Trujillo, C.A., Sari, R., 2004. HST observations of Kuiper Belt binaries, in: AAS/Division for Planetary Sciences Meeting Abstracts
M54(2006):Stansberry, J.A., Grundy, W.M., Margot, J.L., Cruikshank, D.P., Emery, J.P., Rieke, G.H., Trilling, D.E., 2006. The Albedo, Size, and Density of Binary Kuiper Belt Object (47171) 1999 TC 36 . Astrophysical Journal 643, 556–566.