| Discovery | |
|---|---|
| Discovered by | Max Wolf Luigi Carnera |
| Discovery site | Heidelberg |
| Discovery date | 26 June 1902 |
| Designations | |
| MPC designation | (488) Kreusa |
| Pronunciation | /kriːˈuːsə/ |
| Alternative designations | 1902 JG, 1947 KH, 1977 YD, A901 CA, A905 XA |
| Minor planet category | Asteroid belt |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 115.18 yr (42068 d) |
| Aphelion | 3.67325 AU (549.510 Gm) |
| Perihelion | 2.66507 AU (398.689 Gm) |
| Semi-major axis | 3.16916 AU (474.100 Gm) |
| Eccentricity | 0.15906084 |
| Orbital period (sidereal) | 5.64 yr (2060.7 d) |
| Mean anomaly | 197.66463° |
| Mean motion | 0° 10 28.913 / day |
| Inclination | 11.517875° |
| Longitude of ascending node | 84.23348° |
| Argument of perihelion | 71.36554° |
| Physical characteristics | |
| Mean radius | 75.065±3.2 km 81.16 ± 4.77 km |
| Mass | (2.48 ± 1.14) × 10 kg |
| Mean density | 1.10 ± 0.54 g/cm |
| Synodic rotation period | 32.666 h (1.3611 d) |
| Geometric albedo | 0.0589±0.005 |
| Spectral type | C (Tholen) B−V=0.691±0.06 U−B=0.368±0.030 |
| Absolute magnitude (H) | 7.81 |
488 Kreusa is a C-type asteroid orbiting the Sun in the asteroid belt, with the type indicating a surface with a low albedo and high carbonaceous content. The spectra of the asteroid displays evidence of aqueous alteration.
In 2002, Kreusa was detected by radar from the Arecibo Observatory at a distance of 1.67 AU. The resulting data yielded an effective diameter of 150±21 km.
References
- ^ "488 Kreusa (1902 JG)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.
- "Creüsa". Dictionary.com Unabridged (Online). n.d.
- AstDys-2 on (488) Kreusa Retrieved 2012-01-03
- ^ Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009.See Table 1.
- Fornasier, S.; et al. (February 1999), "Spectroscopic comparison of aqueous altered asteroids with CM2 carbonaceous chondrite meteorites", Astronomy and Astrophysics Supplement, 135: 65−73, Bibcode:1999A&AS..135...65F, doi:10.1051/aas:1999161.
- Magri, Christopher; et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003" (PDF), Icarus, 186 (1): 126–151, Bibcode:2007Icar..186..126M, doi:10.1016/j.icarus.2006.08.018, retrieved 14 April 2015.
External links
- 488 Kreusa at AstDyS-2, Asteroids—Dynamic Site
- 488 Kreusa at the JPL Small-Body Database
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