Discovery [1] | |
---|---|
Discovered by | K. Reinmuth |
Discovery site | Heidelberg Obs. |
Discovery date | 29 January 1932 |
Designations | |
(1216) Askania | |
Named after | Askania Werke (German manufacturer) [2] |
1932 BL · 1952 DH 1984 YY6 · A909 GF | |
main-belt · (
inner) Flora [3] [4] · background [5] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 110.32 yr (40,295 days) |
Aphelion | 2.6325 AU |
Perihelion | 1.8328 AU |
2.2327 AU | |
Eccentricity | 0.1791 |
3.34 yr (1,219 days) | |
134.38 ° | |
0° 17m 43.44s / day | |
Inclination | 7.5997° |
121.60° | |
144.64° | |
Physical characteristics | |
7.21±0.38
km
[6] 9.62±2.53 km [7] 10.08±0.54 km [8] 10.533±0.089 km [6] | |
6.536±0.003 h [9] | |
0.064±0.009
[6] 0.070±0.008 [8] 0.136±0.014 [6] 0.15±0.09 [7] 0.24 (assumed) [3] | |
Tholen =
S
[1] ·
S
[3] B–V = 0.903 [1] | |
13.49 [1] [3] [6] [7] [8] | |
1216 Askania, provisional designation 1932 BL, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 29 January 1932, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. [10] It was named after the company Askania Werke, a German manufacturer of precision instruments. [2]
Askania orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 4 months (1,219 days). Its orbit has an eccentricity of 0.18 and an inclination of 8 ° with respect to the ecliptic. [1] The asteroid is a member of the Flora family, one of the largest families in the asteroid belt. [4] [a] Conversely, it is considered a background asteroid when applying the hierarchical clustering method to it proper orbital elements. [5]
The body's observation arc begins with its official discovery observation at Heidelberg in 1932. In July 1906, a first precovery was taken at the Lowell Observatory, and in April 1909, the asteroid was first identified at the discovering observatory as A909 GF. [10]
The minor planet was named after "Askania Werke AG", a manufacturer of optical and astronomical instruments in Berlin (also see Cinetheodolite). [1] The company went on to develop the auto pilot of the V-1 bomb in the following years. [11] The official naming citation was published by Paul Herget in The Names of the Minor Planets in 1955 ( H 112). [2]
In the Tholen classification, Askania is a common stony S-type asteroid. [1]
Lightcurve observations of Askania at the Menke Observatory in July 2006, show a well-defined periodicity of 6.536 hours, during which time the brightness of the body varies by 0.30 magnitude ( U=3-). [9]
According to the surveys carried out by the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Askania measures between 7.21 and 10.533 kilometers in diameter and its surface has an albedo between 0.064 and 0.15. [6] [7] [8]
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, an stony asteroid and largest member and namesake of the Flora family – and calculates a diameter of 5.44 kilometers with an absolute magnitude of 13.49. [3] [a]