Discovery | |
---|---|
Discovered by | M. F. Wolf |
Discovery site | Heidelberg Obs. |
Discovery date | 4 July 1919 |
Designations | |
(914) Palisana | |
Pronunciation | /pælɪˈseɪnə/ |
Named after |
Johann Palisa (Austrian astronomer) [1] |
1919 FN · A904 PB A916 WC | |
main-belt · Phocaea [2] | |
Orbital characteristics [3] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 84.07 yr (30,706 days) |
Aphelion | 2.9857 AU |
Perihelion | 1.9300 AU |
2.4578 AU | |
Eccentricity | 0.2148 |
3.85 yr (1,407 days) | |
71.191 ° | |
0° 15m 20.88s / day | |
Inclination | 25.206° |
255.80° | |
49.144° | |
Physical characteristics | |
Dimensions | 76 km
[4] 76.61±1.7 km [5] 77.000±13.12 km [6] 91.2 km [2] 97.33±1.49 km [7] |
Mass | (2.35 ± 0.24) × 1018 kg [8] |
Mean
density | 8.36 ± 1.85 [8] g/cm3 |
15.922 h (0.6634 d) | |
0.0943±0.004
[5] 0.0666 [2] 0.059±0.002 [7] 0.0934±0.0376 [6] | |
B–V = 0.741 U–B = 0.368 Tholen = CU [3] [8] C [2] | |
8.76
[3]
[2]
[5]
[7]
[6] 8.96±0.30 [9] | |
914 Palisana, provisional designation 1919 FN, is a Phocaean asteroid from the inner regions of the asteroid belt, approximately 77 kilometers in diameter. It was discovered by German astronomer Max Wolf at Heidelberg Observatory on 4 July 1919. [10]
The carbonaceous asteroid is classified as a CU-type on the Tholen taxonomic scheme. It orbits the Sun at a distance of 1.9–3.0 AU once every 3 years and 10 months (1,407 days). Its orbit has an eccentricity of 0.21 and an inclination of 25 ° with respect to the ecliptic. [3]
Measurements using the adaptive optics at the W. M. Keck Observatory give a diameter estimate of 76 km. The size ratio between the major and minor axes is 1.16. [4] During 2004, the asteroid was observed occulting a star. The resulting chords were used to determine a diameter estimate of 91.2 km. This is a poor match to the diameter determined by other means. [11]
The minor planet is named after the Austrian astronomer Johann Palisa (1848–1925), who has discovered many asteroids himself between 1874 and 1923. [1]
Discovery | |
---|---|
Discovered by | M. F. Wolf |
Discovery site | Heidelberg Obs. |
Discovery date | 4 July 1919 |
Designations | |
(914) Palisana | |
Pronunciation | /pælɪˈseɪnə/ |
Named after |
Johann Palisa (Austrian astronomer) [1] |
1919 FN · A904 PB A916 WC | |
main-belt · Phocaea [2] | |
Orbital characteristics [3] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 84.07 yr (30,706 days) |
Aphelion | 2.9857 AU |
Perihelion | 1.9300 AU |
2.4578 AU | |
Eccentricity | 0.2148 |
3.85 yr (1,407 days) | |
71.191 ° | |
0° 15m 20.88s / day | |
Inclination | 25.206° |
255.80° | |
49.144° | |
Physical characteristics | |
Dimensions | 76 km
[4] 76.61±1.7 km [5] 77.000±13.12 km [6] 91.2 km [2] 97.33±1.49 km [7] |
Mass | (2.35 ± 0.24) × 1018 kg [8] |
Mean
density | 8.36 ± 1.85 [8] g/cm3 |
15.922 h (0.6634 d) | |
0.0943±0.004
[5] 0.0666 [2] 0.059±0.002 [7] 0.0934±0.0376 [6] | |
B–V = 0.741 U–B = 0.368 Tholen = CU [3] [8] C [2] | |
8.76
[3]
[2]
[5]
[7]
[6] 8.96±0.30 [9] | |
914 Palisana, provisional designation 1919 FN, is a Phocaean asteroid from the inner regions of the asteroid belt, approximately 77 kilometers in diameter. It was discovered by German astronomer Max Wolf at Heidelberg Observatory on 4 July 1919. [10]
The carbonaceous asteroid is classified as a CU-type on the Tholen taxonomic scheme. It orbits the Sun at a distance of 1.9–3.0 AU once every 3 years and 10 months (1,407 days). Its orbit has an eccentricity of 0.21 and an inclination of 25 ° with respect to the ecliptic. [3]
Measurements using the adaptive optics at the W. M. Keck Observatory give a diameter estimate of 76 km. The size ratio between the major and minor axes is 1.16. [4] During 2004, the asteroid was observed occulting a star. The resulting chords were used to determine a diameter estimate of 91.2 km. This is a poor match to the diameter determined by other means. [11]
The minor planet is named after the Austrian astronomer Johann Palisa (1848–1925), who has discovered many asteroids himself between 1874 and 1923. [1]