Summary for : (490) Veritas

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBACCh- | --3.71 ± 4.12   (E)111 %112.6 ± 6.05.3 %2.77e+18 ± 3.05e+18110 %SEVM
MBACCh- | --0.77 ± 4.77   (E)616 %113.9 ± 6.35.5 %6.00e+17 ± 3.69e+18616 %Sw.avg
MBACh8.37 ± 3.23   (C)39 %111.0 ± 3.83.4 %5.99e+18 ± 2.23e+1837 %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
(490) Veritas115.55 ± 5.504.8 % STM2004D93 0.29 1
(490) Veritas131.50 ± 4.003.0 % Img2006D3412 22.34 2
(490) Veritas102.93 ± 5.265.1 % STM2010D642 3.38 3
(490) Veritas111.98 ± 5.084.5 % NEATM2010D64 0.01 4
(490) Veritas108.09 ± 4.594.2 % Occ2011D95 0.96 5
(490) Veritas112.81 ± 1.661.5 % STM2011D83 0.02 6

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).

Img : Apparent size in disk-resolved imaging. NEATM : Near-Earth Asteroid Thermal Model. Occ : Stellar occultation. STM : Standard Thermal Model.



EVM diam. average D = (112.6 ± 5.99) km   (ΔD/D = 5%, SNR = 18.80) Derived bulk density ρ = (3.71 ± 4.12) g/cm3   (Δρ/ρ = 111%, SNR = 0.9)



References
D34(2006):Marchis, F., Kaasalainen, M., Hom, E.F.Y., Berthier, J., Enriquez, J., Hestroffer, D., Le Mignant, D., de Pater, I., 2006. Shape, size and multiplicity of main-belt asteroids. Icarus 185, 39–63.
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.
D95(2011):Dunham, D.W., Herald, D., Frappa, E., Hayamizu, T., Talbot, J., Timerson, B., 2011. Asteroid Occultations. NASA Planetary Data System. EAR-A-3-RDR-OCCULTATIONS-V9.0.


Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(490) Veritas9.32e+18 ± 4.37e+1847 %Deflec 2011M9722.24 1
(490) Veritas4.48e+18 ± 2.11e+1847 %Deflec 2011M970.65 2
(490) Veritas4.59e+18 ± 2.10e+1846 %Deflec 2011M970.75 3
(490) Veritas9.51e+18 ± 5.62e+1859 %Deflec 2011M9721.44 4
(490) Veritas4.64e+17 ± 2.32e+1750 %Ephem 2019M12699.10 5

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 = (2.774 ± 3.050) × 1018 kg   (ΔM/M = 110%, SNR = 0.9) Derived bulk density ρ = (3.71 ± 4.12) g/cm3   (Δρ/ρ = 111%, SNR = 0.9)



References
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,