284 Amalia is a large main belt asteroid.[2] It was discovered by Auguste Charlois on 29 May 1889 in Nice. This is classified as a Ch-type asteroid in the Bus taxonomy[3] and CX in the Tholen system.[4] It has been observed occulting stars on five occasions as of 2018, which provide a diameter estimate of 54±3 km via a fitted ellipse plot.[5]

284 Amalia
Orbital diagram
Discovery
Discovered byAuguste Charlois
Discovery date29 May 1889
Designations
(284) Amalia
Pronunciation/əˈmɑːliə/
A889 KA
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc122.66 yr (44,800 d)
Aphelion2.88122 AU (431.024 Gm)
Perihelion1.83631 AU (274.708 Gm)
2.35876 AU (352.865 Gm)
Eccentricity0.22149
3.62 yr (1,323.2 d)
19.39 km/s
0.0848612°
0° 16m 19.445s / day
Inclination8.05647°
233.716°
2023-Oct-29
58.0568°
Physical characteristics
Dimensions52.95±2.6 km
8.545 h (0.3560 d)
0.0602±0.006
10.05

References

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  1. ^ "284 Amalia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
  2. ^ "284 Amalia". Asteroid Occultation. Archived from the original on 4 March 2016. Retrieved 6 April 2015.
  3. ^ Gil-Hutton, R.; Cañada-Assandri, M. (March 2012), "Polarimetric survey of main-belt asteroids. II. Results for 58 B- and C-type objects", Astronomy & Astrophysics, 539: 4, Bibcode:2012A&A...539A.115G, doi:10.1051/0004-6361/201117237, A115.
  4. ^ Clark, B. E.; et al. (December 2004), "Spectroscopy of X-Type Asteroids", The Astronomical Journal, 128 (6): 3070–3081, Bibcode:2004AJ....128.3070C, doi:10.1086/424856, S2CID 450504.
  5. ^ Broughton, John (30 April 2018), "Asteroid Dimensions from Occultations", Worldwide Asteroidal Occultation Observations and Resources, retrieved 10 September 2021.
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