Summary for : (324) Bamberga

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBACP-C | Cb-1.63 ± 0.46   (C)28 %231.2 ± 8.13.5 %1.06e+19 ± 2.74e+1826 %SEVM
MBACP-C | Cb-1.65 ± 1.09   (D)66 %230.5 ± 8.83.8 %1.06e+19 ± 6.92e+1865 %Sw.avg
MBACb1.52 ± 0.20   (A)13 %234.7 ± 7.83.3 %1.03e+19 ± 1.00e+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)

Object is a Gaia target for mass determination !

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
(324) Bamberga229.44 ± 7.403.2 % STM2004D93 0.05 1
(324) Bamberga204.00 ± 10.004.9 % Img-TE2008D4812 7.38 2
(324) Bamberga248.17 ± 8.813.5 % STM2010D64 3.73 3
(324) Bamberga239.98 ± 7.713.2 % NEATM2010D64 1.31 4
(324) Bamberga229.69 ± 3.301.4 % STM2011D83 0.20 5
(324) Bamberga229.00 ± 8.143.6 % NEATM2011D72 0.07 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-TE : Triaxial ellipsoid model from images. NEATM : Near-Earth Asteroid Thermal Model. STM : Standard Thermal Model.


EVM diam. average D = (231.2 ± 8.10) km   (ΔD/D = 4%, SNR = 28.54) Derived bulk density ρ = (1.63 ± 0.46) g/cm3   (Δρ/ρ = 28%, SNR = 3.6)


References
D48(2008):Drummond, J.D., Christou, J.C., 2008. Triaxial ellipsoid dimensions and rotational poles of seven asteroids from Lick Observatory adaptive optics images, and of Ceres. Icarus 197, 480–496.
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.
D72(2011):Masiero, J.R., Mainzer, A.K., Grav, T., Bauer, J.M., Cutri, R.M., Dailey, J., Eisenhardt, P.R.M., McMillan, R.S., Spahr, T.B., Skrutskie, M.F., Tholen, D., Walker, R.G., Wright, E.L., DeBaun, E., Elsbury, D., Gautier, IV, T., Gomillion, S., Wilkins, A., 2011. Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters. Astrophysical Journal 741, 68.
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.

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(324) Bamberga4.56e+19 ± 7.56e+1817 %Deflec 2004M421221.47 1
(324) Bamberga1.01e+19 ± 1.59e+1816 %Deflec 2004M390.09 2
(324) Bamberga1.09e+19 ± 1.99e+172 %Deflec 2005M492.76 3
(324) Bamberga9.35e+18 ± 1.39e+1815 %Deflec 2006M560.77 4
(324) Bamberga9.15e+18 ± 5.97e+177 %Ephem 2008M705.65 5
(324) Bamberga9.90e+18 ± 9.90e+1710 %Ephem 2009M860.46 6
(324) Bamberga9.33e+18 ± 7.54e+178 %Ephem 2010M932.70 7
(324) Bamberga1.06e+19 ± 1.97e+1819 %Ephem 2011M1030.00 8
(324) Bamberga5.61e+18 ± 4.78e+1885 %Deflec 2011M971.08 9
(324) Bamberga1.13e+19 ± 2.02e+1818 %Deflec 2011M970.13 10
(324) Bamberga1.08e+19 ± 1.99e+1818 %Deflec 2011M970.01 11
(324) Bamberga1.09e+19 ± 2.18e+1820 %Deflec 2011M970.02 12
(324) Bamberga1.13e+19 ± 8.55e+178 %Ephem 2011M1000.73 13
(324) Bamberga8.75e+18 ± 3.98e+175 %OrbFitN 2014M12320.92 14
(324) Bamberga1.08e+19 ± 2.03e+1819 %Deflec 2017M12520.01 15
(324) Bamberga1.95e+19 ± 5.29e+1827 %Deflec 2017M12522.84 16
(324) Bamberga8.97e+18 ± 2.78e+1831 %Deflec 2017M12520.33 17
(324) Bamberga2.76e+19 ± 9.15e+1833 %Deflec 2017M12523.48 18
(324) Bamberga4.93e+19 ± 1.76e+1936 %Deflec 2017M12524.85 19
(324) Bamberga4.06e+19 ± 1.75e+1943 %Deflec 2017M12522.94 20
(324) Bamberga1.20e+19 ± 1.54e+1813 %Deflec 2017M12530.83 21
(324) Bamberga1.13e+19 ± 3.05e+173 %Ephem 2019M1265.74 22

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. OrbFitN : Simultaneous multi-asteroid astrometric orbit solution (similar to 'Ephem').


EVM mass average M = (1.057 ± 0.274) × 1019 kg   (ΔM/M = 26%, SNR = 3.9) Derived bulk density ρ = (1.63 ± 0.46) g/cm3   (Δρ/ρ = 28%, SNR = 3.6)


References
M39(2004):Pitjeva, E.V., 2004. Estimations of masses of the largest asteroids and the main asteroid belt from ranging to planets, Mars orbiters and landers, in: J.-P. Paillé (Ed.), 35th COSPAR Scientific Assembly, p. 2014.
M42(2004):Kochetova, O.M., 2004. Determination of Large Asteroid Masses by the Dynamical Method. Solar System Research 38, 66–75.
M49(2005):Pitjeva, E.V., 2005. High-Precision Ephemerides of Planets - EPM and Determination of Some Astronomical Constants. Solar System Research 39, 176–186.
M56(2006):Konopliv, A.S., Yoder, C.F., Standish, E.M., Yuan, D.N., Sjogren, W.L., 2006. A global solution for the Mars static and seasonal gravity, Mars orientation, Phobos and Deimos masses, and Mars ephemeris. Icarus 182, 23–50.
M70(2008):Fienga, A., Manche, H., Laskar, J., Gastineau, M., 2008. INPOP06: a new numerical planetary ephemeris. Astronomy and Astrophysics 477, 315–327.
M86(2009):Folkner, W.M., Williams, J.G., Boggs, D.H., 2009. The planetary and lunar ephemeris de 421. IPN Progress Report 42, 1–34.
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.
M100(2011):Fienga, A., Kuchynka, P., Laskar, J., Manche, H., Gastineau, M., 2011. Asteroid mass determinations with INPOP planetary ephemerides. EPSC-DPS Joint Meeting 2011 , 1879.
M103(2011):Konopliv, A.S., Asmar, S.W., Folkner, W.M., Karatekin, Ö., Nunes, D.C., Smrekar, S.E., Yoder, C.F., Zuber, M.T., 2011. Mars high resolution gravity fields from MRO, Mars seasonal gravity, and other dynamical parameters. Icarus 211, 401–428.
M123(2014):Goffin, E., 2014. Astrometric asteroid masses: a simultaneous determination. Astronomy & Astrophysics, Volume 565, id.A56, 8 pp.
M125(2017):Baer, J., Chesley, S.R., 2017. Simultaneous Mass Determination for Gravitationally Coupled Asteroids. The Astronomical Journal, Volume 154, Issue 2, article id. 76, 11 pp.
M126(2019):Fienga, A., et. al, 2019. INPOP19a planetary ephemeris. Notes Scientifiques et Techniques de l'Institut de mécanique céleste,