Astronomy:72 Feronia
 A three-dimensional model of 72 Feronia based on its light curve on the top and an image of 72 Feronia on the bottom. | |
| Discovery | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | 29 May 1861 |
| Designations | |
| (72) Feronia | |
| Pronunciation | /fɛˈroʊniə/[1] |
| Named after | Feronia |
| Minor planet category | Main belt |
| Adjectives | Feronian |
| Orbital characteristics[2] | |
| Epoch 9 June 2026 (JD 2461200.5) | |
| Uncertainty parameter 0 | |
| |{{{apsis}}}|helion}} | 2.541 astronomical unit|AU (380.1 Gm) |
| |{{{apsis}}}|helion}} | 1.991 AU (297.8 Gm) |
| 2.266 AU (339.0 Gm) | |
| Eccentricity | 0.121 |
| Orbital period | 1,245.87 days (3.41 a) |
| Mean anomaly | 38.122° |
| Inclination | 5.418° |
| Longitude of ascending node | 207.925° |
| 102.678° | |
| Jupiter MOID | 2.677 AU |
| TJupiter | 3.601 |
| Physical characteristics | |
| Dimensions | 83.95±4.02 km[3] |
| Mass | (9.45 ± 3.76/1.75)×1017 kg[4] |
| Mean density | 3.045 ± 1.212/0.565 g/cm3[4] |
| Rotation period | 8.09068 h[5] |
| Pole ecliptic latitude | 287 or 102[5] |
| Pole ecliptic longitude | −39 or −55[5] |
| Geometric albedo | 0.063[6] |
| TDG[7] | |
| Absolute magnitude (H) | 8.94 |
72 Feronia is a quite large and dark main belt asteroid. It was the first asteroid discovery by C. H. F. Peters, on 29 May 1861,[8] from Hamilton College, New York State. It was initially thought that Peters had merely seen the previously discovered asteroid 66 Maja, but T.H. Safford showed that it was a new body. Safford named it after Feronia, a Roman fertility goddess.[9]
This asteroid is orbiting the Sun with a period of 3.41 years, having a semi-major axis of 2.266 astronomical unit|AU and an eccentricity of 0.121. The orbital plane is inclined by an angle of 5.4° to the plane of the ecliptic. This is a spectral type TDG asteroid with a cross-section size of 84 km. The asteroid has an estimated rotation period of 8.09 h. Hanuš et al. (2013) gives two possible solutions for the pole in ecliptic coordinates: (λ1, β1) = (287°, −39°) or (λ1, β1) = (102°, −55°).
References
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 "JPL Small-Body Database Lookup: 72 Feronia". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=72.
- ↑ 3.0 3.1 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ 4.0 4.1 4.2 Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society 492 (1). doi:10.1093/mnras/stz3407. https://academic.oup.com/mnras/article/492/1/589/5658701.
- ↑ 5.0 5.1 5.2 5.3 Hanuš, J. et al. (September 2013), "Sizes of main-belt asteroids by combining shape models and Keck adaptive optics observations", Icarus 226 (1): 1045−1057, doi:10.1016/j.icarus.2013.07.023, Bibcode: 2013Icar..226.1045H.
- ↑ "Asteroid Data Sets". http://www.psi.edu/pds/resource/albedo.html.
- ↑ *JPL Small-Body Database Browser
- ↑ 8.0 8.1 Sheehan, William (1999), "Christian Heinrich Friedrich Peters", Biographical Memoirs, 76, National Academies Press, p. 289, ISBN 0309064341, https://books.google.com/books?id=4D-OIyTLoO0C&oi=fnd&pg=PA289.
- ↑ Schmadel, Lutz (2003). Dictionary of minor planet names (fifth ed.). Germany: Springer. p. 22. ISBN 3-540-00238-3. https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA22. Retrieved 2008-12-31.
External links
- 72 Feronia at AstDyS-2, Asteroids—Dynamic Site
- 72 Feronia at the JPL Small-Body Database
 |  |
