1198 Atlantis

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1198 Atlantis
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date7 September 1931
Designations
(1198) Atlantis
Pronunciation /ætˈlæntɪs/
Named after
Island of Atlantis
(Greek mythology) [2]
1931 RA ·1958 RQ
1975 TQ4 ·1975 VX6
Mars-crosser [1] [3] [4]
Symbol 1198 Atlantis symbol (bold).svg (astrological)
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 85.48 yr (31,220 days)
Aphelion 3.0065 AU
Perihelion 1.4941 AU
2.2503 AU
Eccentricity 0.3360
3.38 yr (1,233 days)
168.18°
0° 17m 31.2s / day
Inclination 2.7234°
259.58°
84.528°
Physical characteristics
Dimensions3.92 km (calculated) [4]
16 h [5]
0.20 (assumed) [4]
SMASS = L [1]  · S [4]
14.07±0.53 [6]  ·14.4 [1] [4]

    1198 Atlantis, provisional designation 1931 RA, is a rare-type asteroid and eccentric Mars-crosser from the inner regions of the asteroid belt, approximately 3.9 kilometers in diameter. It was discovered on 7 September 1931, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. [3] The asteroid was named after the mythological island of Atlantis. [2]

    Contents

    Orbit

    Atlantis orbits the Sun at a distance of 1.5–3.0  AU once every 3 years and 5 months (1,233 days). Its orbit has an eccentricity of 0.34 and an inclination of 3° with respect to the ecliptic. [1] The asteroids's observation arc begins at Heidelberg one week after its official discovery observation. [3]

    Physical characteristics

    In the SMASS classification, Atlantis is a rare L-type asteroid, that belong to the larger complex of stony asteroids. [1]

    Rotation period

    In August 2012, a rotational lightcurve of Atlantis was obtained from photometric observations by Italian astronomer Albino Carbognani at the OAVdA Observatory ( B04 ) in Italy. Lightcurve analysis gave a rotation period of at least 16 hours with a brightness variation of 0.20 magnitude ( U=2 ). [5]

    Diameter and albedo

    Atlantis has not been observed by any space-based survey, such as the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, or the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.92 kilometers based on an absolute magnitude of 14.4. [4]

    Naming

    This minor planet was named after the fictional island of Atlantis from Greek mythology, mentioned in some of Plato's works around 360 BC. The greedy and morally bankrupt civilization of Atlantis was punished by the gods with fire and earthquakes that caused the island to sink into the sea. The naming was suggested by astronomer Gustav Stracke, after whom the asteroids (1227) through (1234) were indirectly named by the discoverer. [2]

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    <span class="mw-page-title-main">1750 Eckert</span>

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    3794 Sthenelos is a mid-sized Jupiter trojan from the Greek camp, approximately 40 kilometers in diameter. It was discovered on 12 October 1985, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The presumed C-type asteroid has a rotation period of 12.9 hours. It was named after the Greek warrior Sthenelus from Greek mythology.

    1941 Wild, provisional designation 1931 TN1, is an eccentric Hildian asteroid from the outermost region of the asteroid belt, approximately 20 kilometers in diameter.

    <span class="mw-page-title-main">1632 Sieböhme</span>

    1632 Sieböhme, provisional designation 1941 DF, is an asteroid and relatively slow rotator from the middle region of the asteroid belt, approximately 27 kilometers in diameter. It was discovered on 26 February 1941, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was later named after ARI-astronomer Siegfried Böhme.

    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 1198 Atlantis (1931 RA)" (2017-02-27 last obs.). Jet Propulsion Laboratory . Retrieved 5 August 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1198) Atlantis". Dictionary of Minor Planet Names – (1198) Atlantis. Springer Berlin Heidelberg. p. 100. doi:10.1007/978-3-540-29925-7_1199. ISBN   978-3-540-00238-3.
    3. 1 2 3 "1198 Atlantis (1931 RA)". Minor Planet Center. Retrieved 5 August 2017.
    4. 1 2 3 4 5 6 "LCDB Data for (1198) Atlantis". Asteroid Lightcurve Database (LCDB). Retrieved 5 August 2017.
    5. 1 2 Carbognani, Albino (January 2014). "Asteroids Lightcurves at Oavda: 2012 June - 2013 March". The Minor Planet Bulletin. 41 (1): 4–8. Bibcode:2014MPBu...41....4C. ISSN   1052-8091 . Retrieved 5 August 2017.
    6. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv: 1506.00762 . Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007 . Retrieved 5 August 2017.
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