Irregular moons of Saturn -- Albiorix

For notes, see https://tilmanndenk.de/outersaturnianmoons/albiorix/#1

22 Oct 2018 / TD


	Overview Table
Moon name	Albiorix
Saturn range	16e6	km
Orbit period	2.1	years
Orbit direction	prograde
Size ~	29	km
Rotation period	13	20	hh:mm
Discovery year	2000

(A)	Designations and discovery circumstances
(A1)	Moon name	Albiorix
(A2)	Moon abbrev. (TD)	Alb
(A3)	IAU number	Saturn XXVI
(A4)	Provisional designation	S/2000 S 11
(A5)	SPICE ID	626
(A6)	Also-used label	S26
(A7)	First observation date	09 Nov 2000
(A7)	Announcement date	19 Dec 2000
(A7)	IAU circular announcement no.	7545
(A8)	Discoverers	Holman M. et al.

(B)	Orbit parameters
(B1)	Orbit direction	prograde
(B2)	Group member	Gallic
(B3)	Dynamical family	Gallic
(B4)	Periapsis range	8.52e6	km
(B5)	Semi-major axis	16.39e6	km
(B6)	Apoapsis range	24.26e6	km
(B7)	Semi-major axis	272	R_Saturn
(B8)	Semi-major axis	0.110	au
(B9)	Semi-major axis	0.25	R_Hill
(B10)	Orbit eccentricity	0.48	
(B11)	Orbit inclination	34.1	°
(B12)	Inclination supplemental angle	34.1	°
(B13)	Orbital period	784	d
(B14)	Orbital period	2	1	3.25	y:m:w
(B15)	Mean orbit velocity	1.52	km/s

(C)	Physical parameters
(C1)	Mean size ~	29	-5.5	+5.5	km
(C2)	Mean radius ~	14.3	km
(C3)	Equatorial circumference ~	90	km
(C4)	Minimum equatorial axes ratio	1.34
(C5)	Axes radii (a x b x c) ~	unknown
(C5)	
(C6)	Mass ~	7e15	kg
(C7)	Mean density (?)	0.5	g/cm^3
(C8)	Surface escape velocity ~	20	km/h
(C9)	Rotation period	13.33	h
(C9)	Rotation period error	0.03	h
(C9)	Spin rate	1.80	d^(-1)
(C10)	Spin direction	unknown
(C11)	Seasons	unknown
(C12)	Pole direction (ecliptic longitude λ)	unknown
(C12)	Pole direction (ecliptic latitude β)	unknown
(C13)	Pole direction (geocentric RA)	unknown
(C13)	Pole direction (geocentric Dec)	unknown
(C14)	Absolute visual magnitude ~	11.1	mag
(C15)	Apparent visual magnitude from Earth	20.5	mag
(C16)	Best apparent magnitude for Cassini	9.5	mag
(C17)	Spectral slope ~	+12.5	%/100nm
(C17)	B-R color index ~	1.35	1.29	
(C18)	Albedo (?)	0.06	
(C19)	Hill sphere radius ~	1500	km
(C20)	Hill sphere radius ~	90	r_Alb