Summary for : (165) Loreley

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBACDCb- | --5.81 ± 3.21   (D)55 %168.1 ± 8.24.9 %1.45e+19 ± 7.69e+1853 %SEVM
MBACDCb- | --7.50 ± 4.17   (D)56 %168.0 ± 5.33.2 %1.86e+19 ± 1.02e+1955 %Sw.avg
MBAC8.14 ± 1.46   (X)18 %164.9 ± 8.14.9 %1.91e+19 ± 1.90e+1810 %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
(165) Loreley154.77 ± 4.803.1 % STM2004D93 7.67 1
(165) Loreley166.00 ± 5.503.3 % Img2006D34 0.14 2
(165) Loreley155.76 ± 4.282.7 % STM2010D64 8.27 3
(165) Loreley185.81 ± 8.184.4 % NEATM2010D64 4.71 4
(165) Loreley171.00 ± 8.004.7 % MDM:LO2011D78 0.13 5
(165) Loreley173.66 ± 2.651.5 % STM2011D83 4.46 6
(165) Loreley173.00 ± 5.002.9 % ADAM2017D100 0.97 7

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. Img : Apparent size in disk-resolved imaging. MDM:LO : Multi-Data Modeling: Lightcurves + Occultations. NEATM : Near-Earth Asteroid Thermal Model. STM : Standard Thermal Model.


EVM diam. average D = (168.1 ± 8.24) km   (ΔD/D = 5%, SNR = 20.39) Derived bulk density ρ = (5.81 ± 3.21) g/cm3   (Δρ/ρ = 55%, SNR = 1.8)


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.
D78(2011):Ďurech, J., Kaasalainen, M., Herald, D., Dunham, D., Timerson, B., Hanuš, J., Frappa, E., Talbot, J., Hayamizu, T., Warner, B.D., Pilcher, F., Galád, A., 2011. Combining asteroid models derived by lightcurve inversion with asteroidal occultation silhouettes. Icarus 214, 652–670.
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.
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
(165) Loreley3.18e+19 ± 1.99e+1963 %Ephem 2007M620.76 1
(165) Loreley1.94e+19 ± 1.99e+171 %Ephem 2010M932618.53 2
(165) Loreley1.08e+19 ± 5.64e+1852 %Deflec 2011M970.42 3
(165) Loreley1.87e+19 ± 4.30e+1823 %Deflec 2011M970.98 4
(165) Loreley1.71e+19 ± 4.25e+1825 %Deflec 2011M970.39 5
(165) Loreley1.47e+18 ± 6.86e+18467 %Deflec 2011M9713.58 6
(165) Loreley1.92e+18 ± 9.38e+1749 %Ephem 2019M126178.46 7

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 = (1.445 ± 0.769) × 1019 kg   (ΔM/M = 53%, SNR = 1.9) Derived bulk density ρ = (5.81 ± 3.21) g/cm3   (Δρ/ρ = 55%, SNR = 1.8)


References
M62(2007):Aslan, Z., Gumerov, R., Hudkova, L., Ivantsov, A., Khamitov, I., Pinigin, G., 2007. Mass Determination of Small Solar System Bodies with Ground-based Observations, in: O. Demircan, S. O. Selam, & B. Albayrak (Ed.), Solar and Stellar Physics Through Eclipses, pp. 52–58.
M93(2010):Fienga, A., Manche, H., Kuchynka, P., Laskar, J., Gastineau, M., 2010. INPOP10a. Scientific Notes.
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,