Discovery [1] | |
---|---|
Discovered by | K. Reinmuth |
Discovery site | Heidelberg Obs. |
Discovery date | 13 September 1923 |
Designations | |
(1003) Lilofee | |
Named after | Lilofee
[2] ( mermaid in German folklore) |
1923 OK · 1937 FB 1940 TA · 1951 QO 1951 RA2 · 1957 WD2 1962 QH · A915 HB | |
main-belt · (
outer) Themis [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 93.81 yr (34,263 days) |
Aphelion | 3.6414 AU |
Perihelion | 2.6373 AU |
3.1394 AU | |
Eccentricity | 0.1599 |
5.56 yr (2,032 days) | |
211.31 ° | |
0° 10m 37.92s / day | |
Inclination | 1.8402° |
139.45° | |
317.42° | |
Physical characteristics | |
Dimensions | 27.29±1.83 km
[5] 32.292±0.334 km [6] 33.1±3.3 km [7] 33.678±0.334 km [8] 34.04 km (calculated) [3] 36±4 km [9] |
8.230±0.004
h
[10] 8.24991±0.00005 h [11] 8.250±0.001 h [12] [a] 8.2506±0.0003 h [10] 8.255±0.002 h [10] | |
0.07±0.01
[9] 0.08±0.02 [3] [7] 0.130±0.020 [8] 0.1406±0.0213 [6] 0.198±0.028 [5] | |
C [3] | |
10.20 [5] [6] · 10.50±0.22 [13] · 10.70 [3] [7] [9] · 10.8 [1] | |
Lilofee ( minor planet designation: 1003 Lilofee), provisional designation 1923 OK, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 33 kilometers in diameter. It was discovered on 13 September 1923, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. [14] The asteroid was named after the Black Forest mermaid "Lilofee" from German folklore. [2]
Lilofee is a member of the Themis family ( 602), [3] [4] a very large family of carbonaceous, low-inclination asteroids, named after 24 Themis. [15]: 23 It orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 7 months (2,032 days). Its orbit has an eccentricity of 0.16 and an inclination of 2 ° with respect to the ecliptic. [1]
The asteroid was first identified as A915 HB at Bergedorf Observatory in April 1915. The body's observation arc begins with its official discovery observation at Heidelberg. [14]
Lilofee is an assumed carbonaceous C-type asteroid, [3] which corresponds to the overall spectral type of the Themis family. [15]: 23
Since 2004, several rotational lightcurves of Lilofee were obtained from photometric observations by astronomers René Roy, Enric Forné and Robert Stephens. Lightcurve analysis gave a rotation period of 8.255 hours with a brightness variation of 0.57 magnitude ( U=2+/3/3). [10] [12] [a]
In 2013, an international study modeled a lightcurve with a concurring period of 8.24991 hours and found a spin axis of (n.a., −99.0°) in ecliptic coordinates (λ, β). [11]
According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Lilofee measures between 27.29 and 36 kilometers in diameter and its surface has an albedo between 0.07 and 0.198. [5] [6] [7] [8] [9]
The Collaborative Asteroid Lightcurve Link adopts an albedo of 0.08 and calculates a diameter of 34.04 kilometers based on an absolute magnitude of 10.7. [3]
This minor planet was named after the legendary mermaid/ neck Lilofee, who lived in the small Mummelsee of the Black Forest in southwest Germany. Lilofee is also the title figure in the German folk-song The beautiful young Lilofee ("Die schöne junge Lilofee") by August Schnezler (1809–1853). [2]
The asteroid was named by the discoverer ( RI 402). The name was proposed by ARI-astronomer Johannes Riem, after whom 1025 Riema was named. The official naming citation was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 96). [2]
Discovery [1] | |
---|---|
Discovered by | K. Reinmuth |
Discovery site | Heidelberg Obs. |
Discovery date | 13 September 1923 |
Designations | |
(1003) Lilofee | |
Named after | Lilofee
[2] ( mermaid in German folklore) |
1923 OK · 1937 FB 1940 TA · 1951 QO 1951 RA2 · 1957 WD2 1962 QH · A915 HB | |
main-belt · (
outer) Themis [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 93.81 yr (34,263 days) |
Aphelion | 3.6414 AU |
Perihelion | 2.6373 AU |
3.1394 AU | |
Eccentricity | 0.1599 |
5.56 yr (2,032 days) | |
211.31 ° | |
0° 10m 37.92s / day | |
Inclination | 1.8402° |
139.45° | |
317.42° | |
Physical characteristics | |
Dimensions | 27.29±1.83 km
[5] 32.292±0.334 km [6] 33.1±3.3 km [7] 33.678±0.334 km [8] 34.04 km (calculated) [3] 36±4 km [9] |
8.230±0.004
h
[10] 8.24991±0.00005 h [11] 8.250±0.001 h [12] [a] 8.2506±0.0003 h [10] 8.255±0.002 h [10] | |
0.07±0.01
[9] 0.08±0.02 [3] [7] 0.130±0.020 [8] 0.1406±0.0213 [6] 0.198±0.028 [5] | |
C [3] | |
10.20 [5] [6] · 10.50±0.22 [13] · 10.70 [3] [7] [9] · 10.8 [1] | |
Lilofee ( minor planet designation: 1003 Lilofee), provisional designation 1923 OK, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 33 kilometers in diameter. It was discovered on 13 September 1923, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. [14] The asteroid was named after the Black Forest mermaid "Lilofee" from German folklore. [2]
Lilofee is a member of the Themis family ( 602), [3] [4] a very large family of carbonaceous, low-inclination asteroids, named after 24 Themis. [15]: 23 It orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 7 months (2,032 days). Its orbit has an eccentricity of 0.16 and an inclination of 2 ° with respect to the ecliptic. [1]
The asteroid was first identified as A915 HB at Bergedorf Observatory in April 1915. The body's observation arc begins with its official discovery observation at Heidelberg. [14]
Lilofee is an assumed carbonaceous C-type asteroid, [3] which corresponds to the overall spectral type of the Themis family. [15]: 23
Since 2004, several rotational lightcurves of Lilofee were obtained from photometric observations by astronomers René Roy, Enric Forné and Robert Stephens. Lightcurve analysis gave a rotation period of 8.255 hours with a brightness variation of 0.57 magnitude ( U=2+/3/3). [10] [12] [a]
In 2013, an international study modeled a lightcurve with a concurring period of 8.24991 hours and found a spin axis of (n.a., −99.0°) in ecliptic coordinates (λ, β). [11]
According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Lilofee measures between 27.29 and 36 kilometers in diameter and its surface has an albedo between 0.07 and 0.198. [5] [6] [7] [8] [9]
The Collaborative Asteroid Lightcurve Link adopts an albedo of 0.08 and calculates a diameter of 34.04 kilometers based on an absolute magnitude of 10.7. [3]
This minor planet was named after the legendary mermaid/ neck Lilofee, who lived in the small Mummelsee of the Black Forest in southwest Germany. Lilofee is also the title figure in the German folk-song The beautiful young Lilofee ("Die schöne junge Lilofee") by August Schnezler (1809–1853). [2]
The asteroid was named by the discoverer ( RI 402). The name was proposed by ARI-astronomer Johannes Riem, after whom 1025 Riema was named. The official naming citation was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 96). [2]