Summary for : (111) Ate

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBACCh- | -Ch1.05 ± 3.31   (E)315 %141.8 ± 6.04.2 %1.57e+18 ± 4.93e+18315 %SEVM
MBACCh- | -Ch1.11 ± 25.62   (E)2313 %143.1 ± 4.73.3 %1.70e+18 ± 3.93e+192313 %Sw.avg
MBACh1.15 ± 0.32   (C)28 %142.9 ± 5.94.2 %1.76e+18 ± 4.40e+1725 %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
(111) Ate134.55 ± 4.593.4 % STM2004D93 2.46 1
(111) Ate140.16 ± 2.401.7 % STM2010D64 0.44 2
(111) Ate153.17 ± 5.793.8 % NEATM2010D64 3.89 3
(111) Ate146.55 ± 2.341.6 % STM2011D83 4.20 4
(111) Ate135.00 ± 18.5713.8 % NEATM2011D72 0.13 5

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 = (141.8 ± 6.02) km   (ΔD/D = 4%, SNR = 23.55) Derived bulk density ρ = (1.05 ± 3.31) g/cm3   (Δρ/ρ = 315%, SNR = 0.3)


References
D64(2010):Ryan, E.L., Woodward, C.E., 2010. Rectified Asteroid Albedos and Diameters from IRAS and MSX Photometry Catalogs. Astronomical Journal 140, 933–943.
D72(2011):Masiero, J.R., Mainzer, A.K., Grav, T., Bauer, J.M., Cutri, R.M., Dailey, J., Eisenhardt, P.R.M., McMillan, R.S., Spahr, T.B., Skrutskie, M.F., Tholen, D., Walker, R.G., Wright, E.L., DeBaun, E., Elsbury, D., Gautier, IV, T., Gomillion, S., Wilkins, A., 2011. Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters. Astrophysical Journal 741, 68.
D83(2011):Usui, F., Kuroda, D., Müller, T.G., Hasegawa, S., Ishiguro, M., Ootsubo, T., Ishihara, D., Kataza, H., Takita, S., Oyabu, S., Ueno, M., Matsuhara, H., Onaka, T., 2011. Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey. Publications of the Astronomical Society of Japan 63, 1117–1138.
D93(2004):Tedesco, E.F., Noah, P.V., Noah, M.C., Price, S.D., 2004. IRAS Minor Planet Survey. NASA Planetary Data System. IRAS-A-FPA-3-RDR-IMPS-V6.0.

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(111) Ate1.99e+18 ± 1.99e+1710 %Deflec 2001M284.51 1
(111) Ate1.67e+20 ± 3.78e+1923 %Deflec 2008M781219.15 2
(111) Ate1.74e+18 ± 1.74e+1710 %Ephem 2009M860.98 3
(111) Ate2.71e+18 ± 2.49e+1892 %Deflec 2011M970.21 4
(111) Ate3.42e+17 ± 1.65e+18482 %Deflec 2011M970.55 5
(111) Ate8.16e+17 ± 1.66e+18203 %Deflec 2011M970.20 6
(111) Ate7.27e+17 ± 3.45e+1747 %Ephem 2019M12625.93 7

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).

Deflec : Orbital deflection (close encounter) of one or several test asteroids (classical LSQ). Ephem : Planetary ephemeris solution.


EVM mass average M = (1.568 ± 4.931) × 1018 kg   (ΔM/M = 315%, SNR = 0.3) Derived bulk density ρ = (1.05 ± 3.31) g/cm3   (Δρ/ρ = 315%, SNR = 0.3)


References
M28(2001):Krasinsky, G.A., Pitjeva, E.V., Vasiliev, M.V., Yagudina, E.I., 2001. Estimating masses of asteroids, in: Communications of IAA of RAS.
M78(2008):Ivantsov, A., 2008. Asteroid mass determination at Nikolaev Observatory. Planetary and Space Science 56, 1857–1861.
M86(2009):Folkner, W.M., Williams, J.G., Boggs, D.H., 2009. The planetary and lunar ephemeris de 421. IPN Progress Report 42, 1–34.
M97(2011):Zielenbach, W., 2011. Mass Determination Studies of 104 Large Asteroids. Astronomical Journal 142, 120–128.
M126(2019):Fienga, A., et. al, 2019. INPOP19a planetary ephemeris. Notes Scientifiques et Techniques de l'Institut de mécanique céleste,