4341 Poseidon

4341 Poseidon
Discovery [1]
Discovered by C. Shoemaker
Discovery site Palomar Obs.
Discovery date 29 May 1987
Designations
MPC designation 4341 Poseidon
Named after
 Poseidon
(Greek mythology)[2]
1987 KF
Apollo · NEO
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 29.39 yr (10,735 days)
Aphelion 3.0823 AU
Perihelion 0.5882 AU
1.8352 AU
Eccentricity 0.6795
2.49 yr (908 days)
294.60°
0° 23m 47.04s / day
Inclination 11.851°
108.12°
15.656°
Earth MOID 0.1945 AU
Physical characteristics
Dimensions 2.32 km (derived)[3]
6.262 h[4]
6.2656 h[5]
0.18 (assumed)[3]
SMASS = O [1] · O [3]
15.65[3][5]
16.0[1]
16.11±0.80[6]

    4341 Poseidon, provisional designation 1987 KF, is a rare-type asteroid classified as near-Earth object of the Apollo group, approximately 2.3 kilometers in diameter. It was discovered by American astronomer Carolyn Shoemaker at Palomar Observatory on 29 May 1987.[7]

    The O-type asteroid orbits the Sun at a distance of 0.6–3.1 AU once every 2 years and 6 months (908 days). Its orbit has an eccentricity of 0.68 and an inclination of 12° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery in 1987.[7] Poseidon may be associated with the Taurid Complex of meteor showers.[8]

    The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.18 and derives a diameter of 2.32 kilometers, based on an absolute magnitude of 15.65.[3] In 1998, a rotational light-curve for this asteroid was published from photometric observations made by Czech astronomer Petr Pravec at Ondřejov Observatory. It gave a period of 6.262 hours with a brightness variation of 0.08 magnitude (U=2).[4] A second light-curve was obtained during the Near-Earth Objects Follow-up Program which gave a concurring period of 6.2656 hours and an amplitude of 0.07 magnitude (U=2).[5] A low brightness variation typically indicates that the body has a nearly spheroidal shape.

    The minor planet was named for the "God of the Sea", Poseidon, one of the Twelve Olympians in Greek mythology. He was also referred to as "Earth-Shaker" due to his role in provoking earthquakes, which were then thought to be caused by ocean waves beating on the shore. He was the brother of Zeus (see 5731 Zeus), and an enemy of the Trojans in the Trojan War.[2] Naming citation was published on 30 January 1991 (M.P.C. 17656).[9]

    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 4341 Poseidon (1987 KF)" (2016-10-18 last obs.). Jet Propulsion Laboratory. Retrieved 27 October 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4341) Poseidon. Springer Berlin Heidelberg. p. 372. ISBN 978-3-540-00238-3. Retrieved 27 October 2016.
    3. 1 2 3 4 5 "LCDB Data for (4341) Poseidon". Asteroid Lightcurve Database (LCDB). Retrieved 27 October 2016.
    4. 1 2 Pravec, Petr; Wolf, Marek; Sarounová, Lenka (November 1998). "Lightcurves of 26 Near-Earth Asteroids". Icarus. 136 (1): 124–153. Bibcode:1998Icar..136..124P. doi:10.1006/icar.1998.5993. Retrieved 27 October 2016.
    5. 1 2 3 Krugly, Yu. N.; Belskaya, I. N.; Shevchenko, V. G.; Chiorny, V. G.; Velichko, F. P.; Mottola, S.; et al. (August 2002). "The Near-Earth Objects Follow-up Program. IV. CCD Photometry in 1996-1999". Icarus. 158 (2): 294–304. Bibcode:2002Icar..158..294K. doi:10.1006/icar.2002.6884. Retrieved 27 October 2016.
    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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 27 October 2016.
    7. 1 2 "4341 Poseidon (1987 KF)". Minor Planet Center. Retrieved 27 October 2016.
    8. ↑ Babadzhanov, P. B. (2001). "Search for meteor showers associated with Near-Earth Asteroids". Astronomy and Astrophysics. 373 (1): 329–335. Bibcode:2001A&A...373..329B. doi:10.1051/0004-6361:20010583.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 October 2016.

    External links

    This article is issued from Wikipedia - version of the 10/27/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.