2101 Adonis
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2101 Adonis
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Discovery
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| Discovered by | Eugene Delporte |
| Discovery date | February 12, 1936 |
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Designations
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| Named after | Adonis |
| Alternate name(s) | 1936 CA |
| Minor planet category |
Apollo, Mars crosser |
| Epoch October 22, 2004 (JD 2453300.5) | |
| Aphelion | 3.307 AU (494.673 Gm) |
| Perihelion | 0.441 AU (65.906 Gm) |
| Semi-major axis | 1.874 AU (280.289 Gm) |
| Eccentricity | 0.765 |
| Orbital period | 2.56 a (936.742 d) |
| Average orbital speed | 18.10 km/s |
| Mean anomaly | 307.406° |
| Inclination | 1.349° |
| Longitude of ascending node | 350.580° |
| Argument of perihelion | 42.438° |
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Physical characteristics
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| Dimensions | 0.5–1.2 km 1 |
| Mass | 0.13–1.8×1012 kg |
| Equatorial surface gravity | 0.0001–0.0003 m/s² |
| Escape velocity | 0.0003–0.0006 km/s |
| Albedo | 0.20–0.04 1 |
| Temperature | 197–207 K |
| Absolute magnitude (H) | 18.7 |
2101 Adonis was one of the first near-Earth asteroids to be discovered. It was discovered by Eugene Delporte in 1936 and named after Adonis, the beautiful youth with whom the goddess Venus fell in love. 2101 Adonis is believed to measure approximately 1 km in diameter.
In the close approach that led to its initial discovery, not enough observations could be made to calculate an orbit, and Adonis was a lost asteroid until 1977 when it was rediscovered by Charles T. Kowal.
Adonis was the second Apollo asteroid to be discovered (after 1862 Apollo itself). It may be an extinct comet, and may be the source of some meteor showers.[1]
Adonis makes close approaches to Venus, Earth, and Mars.[2] It comes within 30 Gm of the Earth six times in the 21st century, the nearest being 5.3 Gm in 2036.[3]
Adonis in fiction
- See Asteroids in fiction.
In the 1954 Tintin comic book Explorers on the Moon, a drunken Captain Haddock almost becomes a satellite of the asteroid, which is improbably depicted passing between the Earth and the Moon.
In the comic album "Suske en Wiske, De Wolkeneters" they pass Adonis on their way to Mars and dump their garbage on it.
References
- ^ Babadzhanov, P. B. (2003). "Meteor showers associated with the near-Earth asteroid (2101) Adonis". Astronomy and Astrophysics 397 (1): 319–323. Bibcode 2003A&A...397..319B. doi:10.1051/0004-6361:20021506.
- ^ "JPL Close-Approach Data: 2101 Adonis (1936 CA)". 2008-03-10 last obs. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2101;cad=1#cad. Retrieved 2009-05-05.
- ^ "NEODys (2101) Adonis". Department of Mathematics, University of Pisa, ITALY. http://newton.dm.unipi.it/neodys/index.php?pc=1.1.8&n=Adonis. Retrieved 2009-05-05.
External links
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