SiMDA»Main

Summary for : (107) Camilla

Dyn	T.T	T.B	T T.L B	T.D	Density (g/cm^3)	Δρ/ρ	Diameter (km)	ΔD/D	Mass (kg)	ΔM/M	Ref	Avg.M
MBA	C	X	X \| X	-	2.20 ± 1.26 (D)	57 %	222.3 ± 18.9	8.5 %	1.26e+19 ± 6.48e+18	51 %	S	EVM
MBA	C	X	X \| X	-	2.17 ± 2.53 (E)	116 %	214.6 ± 11.5	5.4 %	1.13e+19 ± 1.30e+19	115 %	S	w.avg
MBA	X				2.28 ± 0.29 (B)	13 %	210.7 ± 8.9	4.2 %	1.12e+19 ± 3.00e+17	3 %	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

Designation	Diameter / Err (km)	ΔD/D	Method	Year	Ref	N	χ²	Use
(107) Camilla	222.61 ± 17.10	7.7 %	STM	2004	D93		0.00	1
(107) Camilla	185.00 ± 9.00	4.9 %	Img	2006	D34	12	17.14	2
(107) Camilla	249.00 ± 18.00	7.2 %	NEATM	2008	D47	1	2.21	3
(107) Camilla	246.00 ± 13.00	5.3 %	Img	2008	D47	1	3.33	4
(107) Camilla	208.85 ± 10.79	5.2 %	STM	2010	D64		1.55	5
(107) Camilla	221.10 ± 14.37	6.5 %	NEATM	2010	D64		0.01	6
(107) Camilla	214.00 ± 28.00	13.1 %	MDM:LO	2011	D78		0.09	7
(107) Camilla	200.36 ± 3.51	1.8 %	STM	2011	D83	2	38.94	8
(107) Camilla	219.36 ± 5.94	2.7 %	NEATM	2011	D72		0.24	9
(107) Camilla	254.00 ± 6.00	2.4 %	ADAM	2017	D100		27.98	10

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 = (222.3 ± 18.87) km (ΔD/D = 8%, SNR = 11.78) Derived bulk density ρ = (2.20 ± 1.26) g/cm³ (Δρ/ρ = 57%, SNR = 1.7)

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.
D47	(2008):	Marchis, F., Descamps, P., Baek, M., Harris, A.W., Kaasalainen, M., Berthier, J., Hestroffer, D., Vachier, F., 2008. Main belt binary asteroidal systems with circular mutual orbits. Icarus 196, 97–118.
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.
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

Designation	Mass / Err (kg)	ΔM/M	Method	Year	Ref	N	χ²	Use
(107) Camilla	1.12e+19 ± 2.98e+17	3 %	BinImg	2008	M75		22.87	1
(107) Camilla	3.62e+19 ± 9.24e+18	26 %	Ephem	2010	M93	12	6.51	2
(107) Camilla	3.88e+18 ± 1.09e+19	281 %	Deflec	2011	M97	12	0.64	3
(107) Camilla	3.90e+19 ± 1.06e+19	27 %	Deflec	2011	M97	12	6.19	4
(107) Camilla	1.76e+19 ± 8.69e+18	49 %	Deflec	2011	M97	12	0.33	5
(107) Camilla	2.25e+18 ± 1.80e+19	800 %	Deflec	2011	M97	12	0.33	6
(107) Camilla	2.71e+19 ± 6.96e+18	26 %	Ephem	2011	M100	12	4.33	7
(107) Camilla	1.11e+19 ± 1.79e+18	16 %	OrbFitN	2014	M123		0.69	8
(107) Camilla	9.56e+18 ± 3.12e+18	33 %	Ephem	2019	M126		0.96	9

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).

BinImg : Binary imaged at optical wavelength. 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 = (1.263 ± 0.648) × 10¹⁹ kg (ΔM/M = 51%, SNR = 1.9) Derived bulk density ρ = (2.20 ± 1.26) g/cm³ (Δρ/ρ = 57%, SNR = 1.7)

References

M75	(2008):	Marchis, F., Descamps, P., Baek, M., Harris, A.W., Kaasalainen, M., Berthier, J., Hestroffer, D., Vachier, F., 2008a. Main belt binary asteroidal systems with circular mutual orbits. Icarus 196, 97–118.
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.
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,

Size, Mass and Density of Asteroids (SiMDA)

Summary for : (107) Camilla

Diameter estimates

Mass estimates