Summary for : (144) Vibilia

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBACCh- | --2.76 ± 0.79   (C)29 %142.0 ± 2.82.0 %4.13e+18 ± 1.15e+1828 %SEVM
MBACCh- | --2.33 ± 1.00   (C)43 %142.3 ± 4.83.4 %3.51e+18 ± 1.47e+1842 %Sw.avg
MBACh3.58 ± 0.84   (C)23 %141.3 ± 2.82.0 %5.30e+18 ± 1.20e+1823 %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
(144) Vibilia142.38 ± 2.591.8 % STM2004D93 0.02 1
(144) Vibilia138.40 ± 9.126.6 % STM2010D642 0.16 2
(144) Vibilia161.19 ± 9.025.6 % NEATM2010D642 4.52 3
(144) Vibilia142.47 ± 4.983.5 % Occ2011D95 0.01 4
(144) Vibilia142.19 ± 1.761.2 % STM2011D83 0.01 5
(144) Vibilia141.00 ± 3.002.1 % ADAM2017D100 0.11 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).

ADAM : All-Data Asteroid Modeling. NEATM : Near-Earth Asteroid Thermal Model. Occ : Stellar occultation. STM : Standard Thermal Model.


EVM diam. average D = (142.0 ± 2.78) km   (ΔD/D = 2%, SNR = 51.09) Derived bulk density ρ = (2.76 ± 0.79) g/cm3   (Δρ/ρ = 29%, SNR = 3.5)


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.
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.
D95(2011):Dunham, D.W., Herald, D., Frappa, E., Hayamizu, T., Talbot, J., Timerson, B., 2011. Asteroid Occultations. NASA Planetary Data System. EAR-A-3-RDR-OCCULTATIONS-V9.0.
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
(144) Vibilia9.08e+18 ± 5.92e+1865 %Ephem 2010M9320.70 1
(144) Vibilia4.63e+18 ± 2.84e+1861 %Deflec 2011M9720.03 2
(144) Vibilia5.32e+18 ± 1.86e+1835 %Deflec 2011M970.41 3
(144) Vibilia4.95e+18 ± 1.85e+1837 %Deflec 2011M9720.19 4
(144) Vibilia4.62e+18 ± 3.06e+1866 %Deflec 2011M9720.03 5
(144) Vibilia3.38e+18 ± 3.98e+1712 %OrbFitN 2014M1233.59 6
(144) Vibilia3.17e+18 ± 8.19e+1726 %Ephem 2019M1261.40 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. OrbFitN : Simultaneous multi-asteroid astrometric orbit solution (similar to 'Ephem').


EVM mass average M = (4.135 ± 1.154) × 1018 kg   (ΔM/M = 28%, SNR = 3.6) Derived bulk density ρ = (2.76 ± 0.79) g/cm3   (Δρ/ρ = 29%, SNR = 3.5)


References
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.
M123(2014):Goffin, E., 2014. Astrometric asteroid masses: a simultaneous determination. Astronomy & Astrophysics, Volume 565, id.A56, 8 pp.
M126(2019):Fienga, A., et. al, 2019. INPOP19a planetary ephemeris. Notes Scientifiques et Techniques de l'Institut de mécanique céleste,