astro.wikisort.org - Asteroid
3671 Dionysus is a small binary Amor asteroid, orbiting between Earth and the asteroid belt. It was discovered by Carolyn and Gene Shoemaker at Palomar Observatory on 27 May 1984. It is named after Dionysus, the Greek god of wine. Its provisional designation was 1984 KD. It is an outer Earth grazer because its perihelion is just within Earth's orbit.
 Orbit of 3671 Dionysus | |
| Discovery | |
|---|---|
| Discovered by | C. S. Shoemaker E. M. Shoemaker |
| Discovery site | Palomar Observatory |
| Discovery date | 27 May 1984 |
| Designations | |
MPC designation | (3671) Dionysus |
| Pronunciation | /daɪəˈnaɪsəs/[1] |
Named after | Διόνυσος Dionȳsos |
Alternative designations | 1984 KD[2] |
Minor planet category | PHA[2] |
| Adjectives | Dionysian /daɪəˈnɪsiən/[3] |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 11629 days (31.84 yr) |
| Aphelion | 3.389527126 AU (507.0660407 Gm) |
| Perihelion | 1.00825538 AU (150.832858 Gm) |
Semi-major axis | 2.198891253 AU (328.9494493 Gm) |
| Eccentricity | 0.54147101 |
Orbital period (sidereal) | 3.26 yr (1191.0 d) |
Mean anomaly | 244.408078° |
Mean motion | 0° 18m 8.181s / day |
| Inclination | 13.5346771° |
Longitude of ascending node | 82.1319934° |
Argument of perihelion | 204.217348° |
| Known satellites | 1 |
| Earth MOID | 0.0199599 AU (2.98596 Gm) |
| Physical characteristics | |
| Dimensions | 1.5 km[2] |
Mean density | 1.6 g/cm3[4] |
Synodic rotation period | 2.7053 h (0.11272 d)[2] |
Geometric albedo | 0.16[2] |
Spectral type | B[2] |
Absolute magnitude (H) | 16.5[2] |
Potentially hazardous object
3671 Dionysus is a potentially hazardous asteroid (PHA) because its minimum orbit intersection distance (MOID) is less than 0.05 AU and its diameter is greater than 150 meters. The Earth-MOID is 0.01989 AU (2,976,000 km; 1,849,000 mi).[2] Its orbit is well-determined for the next several hundred years.
Dionysus makes modestly close approaches to Earth. On 19 June 1984 Dionysus passed 0.0305 AU (4,560,000 km; 2,840,000 mi) from Earth.[2] On 18 June 2085 it will pass 0.028 AU (4,200,000 km; 2,600,000 mi) from Earth.[2]
Moon
In 1997, a team of astronomers at the European Southern Observatory announced that lightcurve observations indicate the presence of a small moon orbiting Dionysus. Its provisional designation is S/1997 (3671) 1. This moon measures 300 meters in diameter, and orbits 3.6 km from Dionysus with an eccentricity of 0.07 and an orbital period of 27.72 hours.[5] From the surface of Dionysus, S/1997 (3671) 1 would have an apparent diameter of roughly 3.02 degrees.[lower-alpha 1] For comparison, the Sun appears to be 0.5° from Earth.
Notes
- Calculated by solving the equation .
References
- Webster (1884) A Practical Dictionary
- "3671 Dionysus (1984 KD)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 14 April 2016.
- "Dionysian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- Pravec, P.; Scheirich, P.; Kusnirak, P.; Sarounova, L.; Mottola, S.; Hahn, G.; Brown, P.; Esquerdo, G.; Kaiser, N.; Krzeminski, Z.; Pray, D. P.; Warner, B. D.; Harris, A. W.; Nolan, M. C.; Howell, E. S.; Benner, L. A. M.; Margot, J. -L.; Galád, A.; Holliday, W.; Hicks, M. D.; Krugly, Yu. N.; Tholen, D.; Whiteley, R.; Marchis, F.; Degraff, D. R.; Grauer, A.; Larson, S.; Velichko, F. P.; Cooney, W. R.; et al. (March 2006). "Photometric survey of binary near-Earth asteroids". Icarus. 181 (1): 63–93. Bibcode:2006Icar..181...63P. doi:10.1016/j.icarus.2005.10.014.
- Johnston's Archive: (3671) Dionysus and S/1997 (3671) 1
External links
- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- 3671 Dionysus at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 3671 Dionysus at ESA–space situational awareness
- 3671 Dionysus at the JPL Small-Body Database
На других языках
[de] (3671) Dionysus
(3671) Dionysus ist ein Asteroid vom Amor-Typ, der am 27. Mai 1984 von Carolyn und Eugene Shoemaker am Mount Palomar entdeckt wurde.- [en] 3671 Dionysus
[ru] (3671) Дионис
(3671) Дионис (др.-греч. Διόνυσος) — околоземный астероид из группы аполлонов, который характеризуется крайне вытянутой орбитой, из-за чего, в процессе своего движения вокруг Солнца, он пересекает не только орбиту Земли, но и Марса. Астероид был открыт 27 мая 1984 года американскими астрономами Кэролин и Юджином Шумейкерами в Паломарской обсерватории и назван в честь Диониса, древнегреческого бога виноделия[1].Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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