Summary for : (720) Bohlinia

DynT.TT.BT T.L B T.DDensity (g/cm^3)Δρ/ρDiameter (km)ΔD/DMass (kg)ΔM/MRefAvg.M
MBASSq- | -Sq5.59 ± 34.11   (E)610 %35.2 ± 3.910.9 %1.28e+17 ± 7.80e+17609 %SEVM
MBASSq- | -Sq2.82 ± 291.33   (E)10324 %34.4 ± 3.39.7 %6.01e+16 ± 6.20e+1810324 %Sw.avg
MBASq2.74 ± 0.56   (C)20 %34.6 ± 1.85.2 %5.97e+16 ± 8.00e+1513 %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
(720) Bohlinia33.72 ± 1.394.1 % STM2004D93 1.18 1
(720) Bohlinia41.00 ± 1.002.4 % TPM2009D5712 33.30 2
(720) Bohlinia28.61 ± 0.983.4 % STM2010D642 45.62 3
(720) Bohlinia40.21 ± 3.137.8 % NEATM2010D64 2.53 4
(720) Bohlinia34.18 ± 0.491.4 % STM2011D83 4.58 5

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).

NEATM : Near-Earth Asteroid Thermal Model. STM : Standard Thermal Model. TPM : Thermophysical Model.


EVM diam. average D = (35.2 ± 3.85) km   (ΔD/D = 11%, SNR = 9.14) Derived bulk density ρ = (5.59 ± 34.11) g/cm3   (Δρ/ρ = 610%, SNR = 0.2)


References
D57(2009):Delbo, M., Tanga, P., 2009. Thermal inertia of main belt asteroids smaller than 100 km from IRAS data. Planetary and Space Science 57, 259–265.
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.

Mass estimates

DesignationMass / Err (kg)ΔM/MMethodYearRefNχ2Use
(720) Bohlinia1.19e+19 ± 1.99e+1817 %Deflec 1999M181234.99 1
(720) Bohlinia5.97e+16 ± 7.96e+1513 %Deflec 2001M2873.60 2
(720) Bohlinia2.78e+18 ± 9.95e+1736 %Deflec 2008M78127.10 3

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).


EVM mass average M = (1.280 ± 7.796) × 1017 kg   (ΔM/M = 609%, SNR = 0.2) Derived bulk density ρ = (5.59 ± 34.11) g/cm3   (Δρ/ρ = 610%, SNR = 0.2)


References
M18(1999):Vasiliev, M.V., Yagudina, E.I., 1999. Determination of masses for 26 selected minor planets from analysis of observations their mutual encounters with asteroids of lesser mass, in: Communications of IAA of RAS.
M28(2001):Krasinsky, G.A., Pitjeva, E.V., Vasiliev, M.V., Yagudina, E.I., 2001. Estimating masses of asteroids, in: Communications of IAA of RAS.
M78(2008):Ivantsov, A., 2008. Asteroid mass determination at Nikolaev Observatory. Planetary and Space Science 56, 1857–1861.