Irregular moons of Saturn -- Narvi

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

22 Oct 2018 / TD


	Overview Table
Moon name	Narvi
Saturn range	19e6	km
Orbit period	2.7	years
Orbit direction	retrograde
Size ~	7	km
Rotation period	10	13	hh:mm
Discovery year	2003

(A)	Designations and discovery circumstances
(A1)	Moon name	Narvi
(A2)	Moon abbrev. (TD)	Nar
(A3)	IAU number	Saturn XXXI
(A4)	Provisional designation	S/2003 S 1
(A5)	SPICE ID	631
(A6)	Also-used label	S31
(A7)	First observation date	08 Apr 2003
(A7)	Announcement date	11 Apr 2003
(A7)	IAU circular announcement no.	8116
(A8)	Discoverers	Sheppard

(B)	Orbit parameters
(B1)	Orbit direction	retrograde
(B2)	Group member	Norse
(B3)	Dynamical family	Bestla/Narvi
(B4)	Periapsis range	11.05e6	km
(B5)	Semi-major axis	19.35e6	km
(B6)	Apoapsis range	27.65e6	km
(B7)	Semi-major axis	321	R_Saturn
(B8)	Semi-major axis	0.129	au
(B9)	Semi-major axis	0.30	R_Hill
(B10)	Orbit eccentricity	0.43	
(B11)	Orbit inclination	145.7	°
(B12)	Inclination supplemental angle	34.3	°
(B13)	Orbital period	1004	d
(B14)	Orbital period	2	9	0	y:m:w
(B15)	Mean orbit velocity	1.40	km/s

(C)	Physical parameters
(C1)	Mean size ~	7	-1.3	+2.1	km
(C2)	Mean radius ~	3.7	km
(C3)	Equatorial circumference ~	25	km
(C4)	Minimum equatorial axes ratio	unknown
(C5)	Axes radii (a x b x c) ~	unknown
(C5)	
(C6)	Mass ~	1e14	kg
(C7)	Mean density (?)	0.5	g/cm^3
(C8)	Surface escape velocity ~	5	km/h
(C9)	Rotation period	10.21	h
(C9)	Rotation period error	0.02	h
(C9)	Spin rate	2.35	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 ~	14.4	mag
(C15)	Apparent visual magnitude from Earth	23.8	mag
(C16)	Best apparent magnitude for Cassini	15.6	mag
(C17)	Spectral slope ~		
(C17)	B-R color index ~	1.29	
(C18)	Albedo (?)	0.06	
(C19)	Hill sphere radius ~	430	km
(C20)	Hill sphere radius ~	115	r_Nar