Summary for : (224) Oceana

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBAM-X | T-3.58 ± 2.31   (D)65 %61.4 ± 8.513.8 %4.33e+17 ± 2.14e+1749 %SEVM
MBAM-X | T-5.32 ± 3.49   (D)66 %53.8 ± 7.714.4 %4.33e+17 ± 2.14e+1749 %Sw.avg

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
(224) Oceana65.80 ± 3.755.7 % STM2010D64 1.40 1
(224) Oceana51.74 ± 1.242.4 % STM2010D642 60.17 2
(224) Oceana71.43 ± 6.739.4 % NEATM2010D64 2.24 3
(224) Oceana69.30 ± 14.0220.2 % NEATM2010D642 0.32 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 = (61.4 ± 8.48) km   (ΔD/D = 14%, SNR = 7.24) Derived bulk density ρ = (3.58 ± 2.31) g/cm3   (Δρ/ρ = 65%, SNR = 1.6)


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.

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(224) Oceana4.33e+17 ± 2.14e+1749 %Ephem 2019M1260.00 1

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 = (4.329 ± 2.140) × 1017 kg   (ΔM/M = 49%, SNR = 2.0) Derived bulk density ρ = (3.58 ± 2.31) g/cm3   (Δρ/ρ = 65%, SNR = 1.6)


References
M126(2019):Fienga, A., et. al, 2019. INPOP19a planetary ephemeris. Notes Scientifiques et Techniques de l'Institut de mécanique céleste,