Summary for : (433) Eros

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
NEASS- | -Sw3.15 ± 0.93   (C)30 %15.9 ± 1.59.7 %6.70e+15 ± 3.54e+145 %SEVM
NEASS- | -Sw3.20 ± 6.96   (E)217 %15.9 ± 6.339.9 %6.69e+15 ± 1.21e+16181 %Sw.avg
NEAS3.00 ± 0.08   (B)3 %16.2 ± 0.21.0 %6.69e+15 ± 0.00e+000 %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
(433) Eros16.20 ± 0.161.0 % FlyBy2000D5 2.52 1
(433) Eros15.27 ± 0.211.4 % STM2011D8312 10.36 2
(433) Eros30.70 ± 9.0029.3 % NEATM2011D7112 2.69 3

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).

FlyBy : Images from spacecraft encounter. NEATM : Near-Earth Asteroid Thermal Model. STM : Standard Thermal Model.


EVM diam. average D = (15.9 ± 1.55) km   (ΔD/D = 10%, SNR = 10.30) Derived bulk density ρ = (3.15 ± 0.93) g/cm3   (Δρ/ρ = 30%, SNR = 3.4)


References
D5(2000):Veverka, J., Robinson, M., Thomas, P., Murchie, S., Bell, J.F., Izenberg, N., Chapman, C., Harch, A., Bell, M., Carcich, B., Cheng, A., Clark, B., Domingue, D., Dunham, D., Farquhar, R., Gaffey, M.J., Hawkins, E., Joseph, J., Kirk, R., Li, H., Lucey, P., Malin, M., Martin, P., McFadden, L., Merline, W.J., Miller, J.K., Owen, W.M., Peterson, C., Prockter, L., Warren, J., Wellnitz, D., Williams, B.G., Yeomans, D.K., 2000. NEAR at Eros: Imaging and Spectral Results. Science 289, 2088–2097.
D71(2011):Mueller, M., Delbo, M., Hora, J.L., Trilling, D.E., Bhattacharya, B., Bottke, W.F., Chesley, S., Emery, J.P., Fazio, G., Harris, A.W., Mainzer, A., Mommert, M., Penprase, B., Smith, H.A., Spahr, T.B., Stansberry, J.A., Thomas, C.A., 2011. ExploreNEOs. III. Physical Characterization of 65 Potential Spacecraft Target Asteroids. Astronomical Journal 141, 109.
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.

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(433) Eros6.69e+15 ± 2.98e+120 %FlyBy 2000M226.05 1
(433) Eros2.38e+16 ± 6.97e+1529 %Ephem 2019M12626.05 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. FlyBy : Spacecraft radio experiment (ranging etc. from flyby, orbiter or lander).


EVM mass average M = (6.697 ± 0.354) × 1015 kg   (ΔM/M = 5%, SNR = 18.9) Derived bulk density ρ = (3.15 ± 0.93) g/cm3   (Δρ/ρ = 30%, SNR = 3.4)


References
M22(2000):Yeomans, D.K., Antreasian, P.G., Barriot, J.P., Chesley, S.R., Dunham, D.W., Farquhar, R.W., Giorgini, J.D., Helfrich, C.E., Konopliv, A.S., McAdams, J.V., Miller, J.K., Owen, W.M., Scheeres, D.J., Thomas, P.C., Veverka, J., Williams, B.G., 2000. Radio Science Results During the NEAR-Shoemaker Spacecraft Rendezvous with Eros. Science 289, 2085–2088.
M126(2019):Fienga, A., et. al, 2019. INPOP19a planetary ephemeris. Notes Scientifiques et Techniques de l'Institut de mécanique céleste,