Summary for : (362) Havnia

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBAXC-Caa | Ch-1.58 ± 0.79   (C)50 %85.3 ± 1.11.3 %5.13e+17 ± 2.55e+1750 %SEVM
MBAXC-Caa | Ch-1.58 ± 0.79   (C)50 %85.3 ± 1.11.3 %5.13e+17 ± 2.55e+1750 %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
(362) Havnia85.25 ± 1.091.3 % NEATM2019D103 0.00 1

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.


EVM diam. average D = (85.3 ± 1.09) km   (ΔD/D = 1%, SNR = 78.50) Derived bulk density ρ = (1.58 ± 0.79) g/cm3   (Δρ/ρ = 50%, SNR = 2.0)


References
D103(2019):Mainzer, A., Bauer, J., Cutri, R., et al., Eds., 2019. NEOWISE Diameters and Albedos V2.0. urn:nasa:pds:neowise_diameters_albedos::2.0. NASA Planetary Data System.

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(362) Havnia5.13e+17 ± 2.55e+1750 %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 = (5.131 ± 2.550) × 1017 kg   (ΔM/M = 50%, SNR = 2.0) Derived bulk density ρ = (1.58 ± 0.79) g/cm3   (Δρ/ρ = 50%, SNR = 2.0)


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