Summary for : (93) Minerva

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBACUCC | CbC1.83 ± 0.41   (C)22 %149.6 ± 8.05.3 %3.20e+18 ± 5.03e+1716 %SEVM
MBACUCC | CbC1.91 ± 0.43   (C)23 %149.5 ± 4.22.8 %3.34e+18 ± 7.04e+1721 %Sw.avg
MBAC1.98 ± 0.39   (B)20 %149.8 ± 8.15.4 %3.50e+18 ± 4.00e+1711 %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
(93) Minerva141.55 ± 4.002.8 % STM2004D93 4.05 1
(93) Minerva156.97 ± 2.821.8 % STM2004D94 6.83 2
(93) Minerva142.70 ± 3.302.3 % STM2010D64 4.37 3
(93) Minerva144.25 ± 2.661.8 % STM2010D64 4.04 4
(93) Minerva164.75 ± 8.345.1 % NEATM2010D64 3.30 5
(93) Minerva165.66 ± 11.286.8 % NEATM2010D64 2.03 6
(93) Minerva147.10 ± 2.241.5 % STM2011D83 1.24 7
(93) Minerva159.00 ± 3.001.9 % ADAM2017D100 9.82 8

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).

ADAM : All-Data Asteroid Modeling. NEATM : Near-Earth Asteroid Thermal Model. STM : Standard Thermal Model.


EVM diam. average D = (149.6 ± 7.97) km   (ΔD/D = 5%, SNR = 18.77) Derived bulk density ρ = (1.83 ± 0.41) g/cm3   (Δρ/ρ = 22%, SNR = 4.5)


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.
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.
D94(2004):Tedesco, E.F., Egan, M.P., Price, S.D., 2004. MSX Infrared Minor Planet Survey. NASA Planetary Data System. MSX-A-SPIRIT3-5-SBN0003-MIMPS-V1.0.
D100(2017):Hanuš, J., Viikinkoski, M., Marchis, F., et al., 2017. Volumes and bulk densities of forty asteroids from ADAM shape modeling. Astronomy and Astrophysics 601, A114 (2017). DOI: 10.1051/0004-6361/201629956

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(93) Minerva3.50e+18 ± 4.00e+1711 %BinImg 2011M1010.56 1
(93) Minerva2.35e+18 ± 9.80e+1742 %Ephem 2019M12620.75 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. Ephem : Planetary ephemeris solution.


EVM mass average M = (3.202 ± 0.503) × 1018 kg   (ΔM/M = 16%, SNR = 6.4) Derived bulk density ρ = (1.83 ± 0.41) g/cm3   (Δρ/ρ = 22%, SNR = 4.5)


References
M101(2011):Marchis, F., Descamps, P., Dalba, P., Enriquez, J.E., Durech, J., Emery, J.P., Berthier, J., Vachier, F., Merlbourne, J., Stockton, A.N., Fassnacht, C.D., Dupuy, T.J., 2011. A Detailed Picture of the (93) Minerva Triple System, in: EPSC-DPS Joint Meeting 2011, p. 653.
M126(2019):Fienga, A., et. al, 2019. INPOP19a planetary ephemeris. Notes Scientifiques et Techniques de l'Institut de mécanique céleste,