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91 Aegina information


91 Aegina
Orbital diagram
Discovery
Discovered byÉdouard Stephan
Discovery date4 November 1866
Designations
MPC designation
(91) Aegina
Pronunciation/ɪˈnə/[1]
Named after
Aegina
Minor planet category
Main belt
AdjectivesAeginetan /ɪˈntən/[2]
Orbital characteristics
Epoch 31 December 2006 (JD 2454100.5)
Aphelion428.453 Gm (2.864 AU)
Perihelion346.826 Gm (2.318 AU)
Semi-major axis
387.640 Gm (2.591 AU)
Eccentricity0.105
Orbital period (sidereal)
1,523.536 d (4.171 yr)
Average orbital speed
18.45 km/s
Mean anomaly
183.458°
Inclination2.109°
Longitude of ascending node
10.806°
Argument of perihelion
73.371°
Physical characteristics
Dimensions109.8 km
Mass1.4×1018 kg
Equatorial surface gravity
0.0307 m/s²
Equatorial escape velocity
0.0580 km/s
Synodic rotation period
6.03 hours
Geometric albedo
0.043 [3]
Spectral type
C
Absolute magnitude (H)
8.84

Aegina (from Latin Aegīna, Aegīnēta),[4] minor planet designation 91 Aegina, is a large main-belt asteroid. It was discovered by a French astronomer Édouard Jean-Marie Stephan on 4 November 1866. It was his second and final asteroid discovery. The first was 89 Julia. The asteroid's name comes from Aegina, a Greek mythological figure associated with the island of the same name.

This body is orbiting the Sun with a period of 4.17 years and an eccentricity of 0.105. The orbit of this object brings it to within 4.9 Gm of the dwarf planet Ceres, and the resulting gravitational interaction has been used to produce mass estimates of the latter.[5] The cross-section size of the asteroid is 110 km and it has a rotation period of six hours. The surface coloring of 91 Aegina is very dark and this C-type asteroid has probably a primitive carbonaceous composition. Observation of absorption bands at wavelengths of 0.7 and 3μm indicate the presence of hydrated minerals and/or ice grains on the surface.[6]

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ Figueira (1981) Aegina, society and politics
  3. ^ Asteroid Data Sets Archived 17 December 2009 at the Wayback Machine
  4. ^ Charlton T. Lewis, Charles Short, A Latin Dictionary
  5. ^ Cite error: The named reference Viateau1998 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Howell2011 was invoked but never defined (see the help page).

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91 Aegina

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Aegina (from Latin Aegīna, Aegīnēta), minor planet designation 91 Aegina, is a large main-belt asteroid. It was discovered by a French astronomer Édouard...

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Aegina

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Aegina (/ɪˈdʒaɪnə/; Greek: Αίγινα, Aígina; Ancient Greek: Αἴγῑνα) is one of the Saronic Islands of Greece in the Saronic Gulf, 27 km (17 mi) from Athens...

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91

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management business Protactinium, atomic number 91 91 Aegina, a main-belt asteroid All pages with titles containing 91 All pages with titles containing Ninety-one...

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89 Julia

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1866. This was first of his two asteroid discoveries; the other was 91 Aegina. 89 Julia is believed to be named after Saint Julia of Corsica. A stellar...

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92 Undina

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v t e Minor planets navigator 91 Aegina 92 Undina 93 Minerva...

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90 Antiope

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v t e Minor planets navigator 89 Julia 90 Antiope 91 Aegina...

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List of Solar System objects by size

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last obs). Retrieved 30 April 2019. "JPL Small-Body Database Browser: 91 Aegina" (2018-07-31 last obs). Retrieved 3 May 2019. "JPL Small-Body Database...

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Posca

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Legendary Empire, I.B. Tauris, 2010, pp. 25 and 90-91, citing Aëtius , Medicine 3.81, and Paul of Aegina, Medical Epitome 7.5.10. Dalby, Andrew (2003). "Posca"...

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First Peloponnesian War

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except for Thebes. Athens further consolidated their position by making Aegina a member of the Delian League and by ravaging the Peloponnese. The Athenians...

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Corinthian War

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Anaxibius and many others. In 389 BC, the Athenians attacked the island of Aegina, off the coast of Attica. The Spartans soon drove off the Athenian fleet...

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Dying Gaul

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as exemplified by the pedimental sculptures of the Temple of Aphaea at Aegina. The message conveyed by the sculpture, as H. W. Janson comments, is that...

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Apadana hoard

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lightweight Croeseids (Sardis mint), a tetradrachm of Abdera, a stater of Aegina. Southeastern deposit: Four gold lightweight Croeseids (Sardis mint), three...

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List of radio stations in Greece

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the west of the city. Many stations also have repeaters on the island of Aegina, south of Athens in the Saronic Sea, to cover coastal regions of Athens...

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Herodotus

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of history and historians) Life of Homer (Pseudo-Herodotus) Sostratus of Aegina C. Hude (ed.) Herodoti Historiae. Tomvs prior: Libros I–IV continens. (Oxford...

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Minoan art

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the Aegina Treasure is an important group in the British Museum, of uncertain origin though supposedly found c. 1890 on the Greek island of Aegina near...

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Lysander

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massacred or banished. In a propaganda gesture he restored places like Aegina, Melos and Scione to populations whom the Athenians had forcibly uprooted...

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Cleopatra

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Amida attributed a recipe for perfumed soap to Cleopatra, while Paul of Aegina preserved alleged instructions of hers for dyeing and curling hair. Cleopatra...

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Corinth Canal

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Saronic Gulf. As a result, they concluded, if a canal were dug the island of Aegina would be inundated. Caligula's interest in the idea got no further as he...

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Helladic chronology

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Argolid (Manika, Lerna, Pefkakia, Thebes, Tiryns) or coastal islands such as Aegina (Kolonna) and Euboea (Lefkandi) and are marked by pottery showing influences...

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Greek Revival architecture

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influenced the later development of the style. The archaeological dig at Aegina and Bassae in 1811–1812 by Cockerell, Otto Magnus von Stackelberg, and Karl...

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List of European islands by area

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85 33  France 244 Nordkvaløya 84 33  Norway 245 Syros 84 33 Greece 246 Aegina 83 32 Greece 247 Formentera 83 32  Spain 248 Pantelleria 83 32  Italy 249...

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