Summary for : (1036) Ganymed

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
NEASSS | SS3.48 ± 1.79   (D)51 %34.3 ± 1.33.9 %7.39e+16 ± 3.70e+1650 %SEVM
NEASSS | SS3.03 ± 3.28   (E)108 %34.8 ± 2.26.3 %6.66e+16 ± 7.10e+16106 %Sw.avg
NEAS7.91 ± 15.10   (X)191 %34.3 ± 1.44.0 %1.67e+17 ± 3.18e+17190 %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
(1036) Ganymed31.65 (+2.79 / -2.79)8.8 % / 8.8 % STM2004D932 0.93 1
(1036) Ganymed35.00 (+0.78 / -0.78)2.2 % / 2.2 % STM2011D83 0.72 2
(1036) Ganymed35.50 (+1.90 / -0.80)5.4 % / 2.3 % TPM2015D118 0.74 3
(1036) Ganymed36.00 (+1.00 / -0.50)2.8 % / 1.4 % TPM2015D118 4.91 4
(1036) Ganymed37.00 (+2.00 / -4.00)5.4 % / 10.8 % TPM2015D118 0.79 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).
3: Values with asymmetric errors are currently just diplayed but disabled (unchecked) for the average calculation.

STM : Standard Thermal Model. TPM : Thermophysical Model.


EVM diam. average D = (34.3 ± 1.33) km   (ΔD/D = 4%, SNR = 25.74) Derived bulk density ρ = (3.48 ± 1.79) g/cm3   (Δρ/ρ = 51%, SNR = 1.9)


References
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.
D118(2015):Hanuš, J., Delbo, M., Ďurech, J., Alí-Lagoa, V., 2015. Thermophysical modeling of asteroids from WISE thermal infrared data – Significance of the shape model and the pole orientation uncertainties. Icarus 256, 101–116. https://doi.org/10.1016/j.icarus.2015.04.014

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(1036) Ganymed1.67e+17 ± 3.18e+17190 %Ephem 2010M9320.09 1
(1036) Ganymed6.58e+16 ± 2.92e+1644 %Ephem 2019M1260.08 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).

Ephem : Planetary ephemeris solution.


EVM mass average M = (7.388 ± 3.696) × 1016 kg   (ΔM/M = 50%, SNR = 2.0) Derived bulk density ρ = (3.48 ± 1.79) g/cm3   (Δρ/ρ = 51%, SNR = 1.9)


References
M93(2010):Fienga, A., Manche, H., Kuchynka, P., Laskar, J., Gastineau, M., 2010. INPOP10a. Scientific Notes.
M126(2019):Fienga, A., et. al, 2019. INPOP19a planetary ephemeris. Notes Scientifiques et Techniques de l'Institut de mécanique céleste,