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4341 Poseidon

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4341 Poseidon
Discovery [1]
Discovered byC. Shoemaker
Discovery sitePalomar Obs.
Discovery date29 May 1987
Designations
MPC designation(4341) Poseidon
Named after
Poseidon
(Greek mythology)[2]
1987 KF
Apollo · NEO
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc30.05 yr (10,975 days)
Aphelion3.0819 AU
Perihelion0.5881 AU
1.8350 AU
Eccentricity0.6795
2.49 yr (908 days)
93.192°
0° 23m 47.4s / day
Inclination11.852°
108.11°
15.652°
Earth MOID0.1941 AU · 75.6 LD
Physical characteristics
Dimensions2.32 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 designation1987 KF, is a rare-type asteroid classified asnear-Earth object of the Apollo group, approximately 2.3 kilometers in diameter. It was discovered by American astronomerCarolyn Shoemaker at Palomar Observatoryon 29 May 1987.[7] The asteroid was named after Poseidon from Greek mythology.[2]

Orbit and classification[edit]

Poseidon 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 theecliptic.[1]

As no precoveries were taken, the asteroid'sobservation arc begins with its discovery in 1987.[7] Poseidon may be associated with theTaurid Complex of meteor showers.[8] It has an Earth minimum orbital intersection distance of 0.1941 AU (29,000,000 km), which corresponds to 75.6 lunar distances.[1]

Physical characteristics[edit]

in the SMASS classificationPoseidon is a O-type asteroid.[1]

Diameter and albedo[edit]

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.18 and derives a diameter of 2.32 kilometers with an absolute magnitude of 15.65.[3] As of 2017, no other estimates for its diameter and albedo have been published.[1][3]

Lightcurves[edit]

In 1998, a rotational lightcurve of Poseidon was published from photometric observations made by Czech astronomer Petr Pravec at Ondřejov Observatory. It gave a period of 6.262hours with a brightness variation of 0.08 magnitude (U=2).[4]

A second lightcurve 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.

Naming[edit]

This 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 theTrojan War.[2] The official naming citation was published by the Minor Planet Center on 30 January 1991 (M.P.C. 17656).[9]


https://en.wikipedia.org/wiki/4341_Poseidon

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小行星5731[編輯]

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5731 Zeus
發現
發現者卡羅琳·舒梅克尤金·舒梅克
發現地帕洛馬山
發現日期1988年11月4日
編號
小行星分類阿波羅型小行星
軌道參數[1]
曆元 2456400.5 (2013年4月18日更新)
遠日點3.742391138540901 AU(559,853,745.652 km
近日點.7840891390934165 AU(117,298,065.647 km)
半長軸2.263240138817159 AU(338,575,905.650 km)
離心率0.653554598
軌道週期1243.639141 
3.4儒略年
軌道傾角11.43087843730142
升交點黃經281.7142772988809
近日點參數216.9658179270387
物理特徵
絕對星等(H)216.9658179270387

小行星5731英語:5731 Zeus)是一顆圍繞太陽公轉小行星。1988年11月4日,卡羅琳·舒梅克尤金·舒梅克在帕洛馬山發現了此天體[1][2]

這顆小行星的絕對星等為216.9658179270387等[1]

參考文獻[編輯]

  1. 移至:1.0 1.1 1.2 5731 Zeus,小行星資料庫瀏覽器(JPL Small-Body Database Browser)-美國國家航空暨太空總署噴氣推進實驗室
  2. 移至^ 小行星列表. 哈佛大學. [2013-07-08].
前一小行星:
小行星5730
小行星列表後一小行星:
小行星5732

https://zh.wikipedia.org/wiki/%E5%B0%8F%E8%A1%8C%E6%98%9F5731
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Greek Theme Asteroids:5731 Zeus
103 Hera
2101 Adonis
399 Persephone
46 Hestia
1108 Demeter
2 Pallas (also called Pallas Athene)
881 Athene
433 Eros
16 Psyche
1388 Aphrodite
1862 Apollo
3361 Orpheus
80 Sappho
201 Penelope
1943 Anteros
2101 Adonis
108 Hecuba
4450 Pan
74 Galatea
88 Thisbe
14871 Pyramus
875 Nymphe
499 Venusia
60 Echo
1036 Ganymede
3671 Dionysus
1809 Prometheus
258 Tyche
128 Nemesis
5 Astraea
19521 Chaos
638 Moira
273 Atropos
97 Klotho
120 Lachesis
57 Mnemosyne
600 Musa
22 Kalliope
84 Klio
18 Melpomene
27 Euterpe
62 Erato
81 Terpsichore
30 Urania
23 Thalia
33 Polyhymnia
14827 Hypnos
10 Hygeia
2878 Panacea
1027 Aescualpia
3063 Makhaon
4086 Podalerios
5261 Eureka
5450 Sokrates
5451 Plato
6123 Aristoteles
193 Ambrosia

http://mychristianpsychic.com/journal/asteroid-numbers/
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57393207_825527657833864_7063876589393543168_n.jpg
2019-5-6 14:53

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不怕辛苦,就怕不公平;不怕卑微,就怕不公義。
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