Irregular moons of Saturn -- Ijiraq

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

22 Oct 2018 / TD


	Overview Table
Moon name	Ijiraq
Saturn range	11e6	km
Orbit period	1.2	years
Orbit direction	prograde
Size ~	13	km
Rotation period	13	02	hh:mm
Discovery year	2000

(A)	Designations and discovery circumstances
(A1)	Moon name	Ijiraq
(A2)	Moon abbrev. (TD)	Iji
(A3)	IAU number	Saturn XXII
(A4)	Provisional designation	S/2000 S 6
(A5)	SPICE ID	622
(A6)	Also-used label	S22
(A7)	First observation date	23 Sep 2000
(A7)	Announcement date	18 Nov 2000
(A7)	IAU circular announcement no.	7521
(A8)	Discoverers	Kavelaars, Gladman, et al.

(B)	Orbit parameters
(B1)	Orbit direction	prograde
(B2)	Group member	Inuit
(B3)	Dynamical family	Kiviuq/Ijiraq
(B4)	Periapsis range	8.31e6	km
(B5)	Semi-major axis	11.41e6	km
(B6)	Apoapsis range	14.51e6	km
(B7)	Semi-major axis	189	R_Saturn
(B8)	Semi-major axis	0.076	au
(B9)	Semi-major axis	0.17	R_Hill
(B10)	Orbit eccentricity	0.27	
(B11)	Orbit inclination	47.5	°
(B12)	Inclination supplemental angle	47.5	°
(B13)	Orbital period	452	d
(B14)	Orbital period	1	2	3.75	y:m:w
(B15)	Mean orbit velocity	1.82	km/s

(C)	Physical parameters
(C1)	Mean size ~	13	-2	+4	km
(C2)	Mean radius ~	6.4	km
(C3)	Equatorial circumference ~	40	km
(C4)	Minimum equatorial axes ratio	1.08
(C5)	Axes radii (a x b x c) ~	unknown
(C5)	
(C6)	Mass ~	5.4e14	kg
(C7)	Mean density (?)	0.5	g/cm^3
(C8)	Surface escape velocity ~	9	km/h
(C9)	Rotation period	13.03	h
(C9)	Rotation period error	0.14	h
(C9)	Spin rate	1.84	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 ~	13.2	mag
(C15)	Apparent visual magnitude from Earth	22.6	mag
(C16)	Best apparent magnitude for Cassini	11.8	mag
(C17)	Spectral slope ~	+19.5	%/100nm
(C17)	B-R color index ~	1.63	1.40	
(C18)	Albedo (?)	0.06	
(C19)	Hill sphere radius ~	560	km
(C20)	Hill sphere radius ~	85	r_Iji