Discovery[1] | |
---|---|
Discovered by | S. Belyavskyj |
Discovery site | Simeiz Obs. |
Discovery date | 23 September 1917 |
Designations | |
(981) Martina | |
Named after | Henri Martin (French historian)[2] |
A917 SW · 1917 Σ92 1906 SD · 1928 TG 1942 EY · 1949 MF 1953 FG · 1959 GF 1959 JF · 1966 QA A906 SD | |
main-belt[1][3] · (outer) Themis[4][5] | |
Orbital characteristics[3] | |
Epoch 31 May 2020 (JD 2459000.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.98 yr (41,266 d) |
Aphelion | 3.7284 AU |
Perihelion | 2.4685 AU |
3.0984 AU | |
Eccentricity | 0.2033 |
5.45 yr (1,992 d) | |
309.55° | |
0° 10m 50.52s / day | |
Inclination | 2.0633° |
46.062° | |
297.91° | |
Physical characteristics | |
11.267±0.003 h[9][10] | |
10.9[1][3] | |
981 Martina (prov. designation: A917 SW or 1917 Σ92) is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 31 kilometers (19 miles) in diameter. It was discovered on 23 September 1917, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula.[1] The C/B-type asteroid has a rotation period of 11.3 hours.[10] It was named after French historian and revolutionary Henri Martin (1810–1883).[2]
MPC-object
was invoked but never defined (see the help page).springer
was invoked but never defined (see the help page).jpldata
was invoked but never defined (see the help page).AstDys-object
was invoked but never defined (see the help page).Ferret
was invoked but never defined (see the help page).SIMPS
was invoked but never defined (see the help page).AKARI
was invoked but never defined (see the help page).Masiero-2014
was invoked but never defined (see the help page).lcdb
was invoked but never defined (see the help page).Higgins-2005a
was invoked but never defined (see the help page).Masiero-2012
was invoked but never defined (see the help page).SDSS-Taxonomy
was invoked but never defined (see the help page).Lazzaro-2004
was invoked but never defined (see the help page).