![]() Modelled shape of Leontina from its
lightcurve | |
Discovery [1] | |
---|---|
Discovered by | J. Rheden |
Discovery site | Vienna Obs. |
Discovery date | 1 October 1916 |
Designations | |
(844) Leontina | |
Pronunciation | /liːɒnˈtaɪnə/ |
Named after |
Lienz (discoverer's home town) [2] |
1916 AP · 1935 BN 1953 FL1 · A902 EC | |
main-belt · ( outer) [1] | |
Orbital characteristics [1] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 114.11 yr (41680 d) |
Aphelion | 3.4273 AU (512.72 Gm) |
Perihelion | 2.9894 AU (447.21 Gm) |
3.2084 AU (479.97 Gm) | |
Eccentricity | 0.068232 |
5.75 yr (2099.0 d) | |
213.70 ° | |
0° 10m 17.436s / day | |
Inclination | 8.7853° |
348.76° | |
351.03° | |
Physical characteristics | |
Dimensions | 39.90±0.79 km
[3] 49.558±0.785 km [4] 28.85±1.47 km [5] 35.73 km (calculated) [6] |
6.7859±0.0002
h
[7] 6.784±0.001 h [7] 6.7965±0.0028 h [8] 6.7859 h (0.28275 d) [1] | |
0.200±0.010
[3] 0.1255±0.0132 [4] 0.307±0.036 [5] | |
SMASS = X [1] · S [6] | |
9.6 [1] | |
844 Leontina, provisional designation 1916 AP, is a stony asteroid from the outer region of the asteroid belt, about 36 kilometers in diameter. It was discovered on 1 October 1916, by Austrian astronomer Joseph Rheden at Vienna Observatory, Austria. [9]
Leontina is an X-type asteroid in the SMASS classification. It orbits the Sun at a distance of 3.0–3.4 AU once every 5 years and 9 months (2,097 days). Its orbit is tilted by 9 degrees to the plane of the ecliptic and shows an eccentricity of 0.07. [1]
Multiple lightcurve analysis rendered a well-defined, concurring rotation period of 6.79 hours. [7] [8] According to the surveys carried out by the Japanese Akari satellite and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, measurements of the body's brightness gave a divergent albedo of 0.13, 0.20 and 0.31, respectively. [3] [4] [5] As a result, the asteroid's estimated diameter strongly varies between 28 and 40 kilometers. The Collaborative Asteroid Lightcurve Link (CALL) considers Akari's albedo-figure of 0.20 the most accurate one and consequently assumes the otherwise classified X-type body to be of a stony surface composition with a calculated diameter of 36 kilometers. [6]
This minor planet was named by the discoverer for his home town Lienz in East Tyrol, Austria. [2]
![]() Modelled shape of Leontina from its
lightcurve | |
Discovery [1] | |
---|---|
Discovered by | J. Rheden |
Discovery site | Vienna Obs. |
Discovery date | 1 October 1916 |
Designations | |
(844) Leontina | |
Pronunciation | /liːɒnˈtaɪnə/ |
Named after |
Lienz (discoverer's home town) [2] |
1916 AP · 1935 BN 1953 FL1 · A902 EC | |
main-belt · ( outer) [1] | |
Orbital characteristics [1] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 114.11 yr (41680 d) |
Aphelion | 3.4273 AU (512.72 Gm) |
Perihelion | 2.9894 AU (447.21 Gm) |
3.2084 AU (479.97 Gm) | |
Eccentricity | 0.068232 |
5.75 yr (2099.0 d) | |
213.70 ° | |
0° 10m 17.436s / day | |
Inclination | 8.7853° |
348.76° | |
351.03° | |
Physical characteristics | |
Dimensions | 39.90±0.79 km
[3] 49.558±0.785 km [4] 28.85±1.47 km [5] 35.73 km (calculated) [6] |
6.7859±0.0002
h
[7] 6.784±0.001 h [7] 6.7965±0.0028 h [8] 6.7859 h (0.28275 d) [1] | |
0.200±0.010
[3] 0.1255±0.0132 [4] 0.307±0.036 [5] | |
SMASS = X [1] · S [6] | |
9.6 [1] | |
844 Leontina, provisional designation 1916 AP, is a stony asteroid from the outer region of the asteroid belt, about 36 kilometers in diameter. It was discovered on 1 October 1916, by Austrian astronomer Joseph Rheden at Vienna Observatory, Austria. [9]
Leontina is an X-type asteroid in the SMASS classification. It orbits the Sun at a distance of 3.0–3.4 AU once every 5 years and 9 months (2,097 days). Its orbit is tilted by 9 degrees to the plane of the ecliptic and shows an eccentricity of 0.07. [1]
Multiple lightcurve analysis rendered a well-defined, concurring rotation period of 6.79 hours. [7] [8] According to the surveys carried out by the Japanese Akari satellite and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, measurements of the body's brightness gave a divergent albedo of 0.13, 0.20 and 0.31, respectively. [3] [4] [5] As a result, the asteroid's estimated diameter strongly varies between 28 and 40 kilometers. The Collaborative Asteroid Lightcurve Link (CALL) considers Akari's albedo-figure of 0.20 the most accurate one and consequently assumes the otherwise classified X-type body to be of a stony surface composition with a calculated diameter of 36 kilometers. [6]
This minor planet was named by the discoverer for his home town Lienz in East Tyrol, Austria. [2]