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221 Eos

221 Eos is a large main-belt asteroid that was discovered by Austrian astronomer Johann Palisa on January 18, 1882, in Vienna. In 1884, it was named after Eos, the Greek goddess of the dawn, to honour the opening of a new observatory that was hoped to bring about a new dawn for Viennese astronomy.

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Absolute magnitude (H)
7.67
Adjectives
Eoan /iːˈoʊ.ən/
Alternative designations
A882 BA
Aphelion
3.3249 AU (497.40 Gm)
Argument of perihelion
193.56°
Average orbital speed
17.16 km/s

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221 Eos

Nodes21
Edges20
Triples41
Avg. degree1.9
Density0.095238
Components1

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221 Eos

Top relations

related to External links · 16
221 Eos → AstDyS-2, Asteroids, DatabaseMinor Planet Discovery CircumstancesAsteroid, Discovery, Dynamic SiteEphemeris, Eos, Ephemeris, JPL Small-Body DatabaseClose, Lightcurve Data File221 Eos, Observation, Observational, Orbit, Orbital, Physical, Proper, The Asteroid Orbital Elements
Absolute magnitude (H) · 1
221 Eos → 7.67
Adjectives · 1
221 Eos → Eoan /iːˈoʊ.ən/
Alternative designations · 1
221 Eos → A882 BA
Aphelion · 1
221 Eos → 3.3249 AU (497.40 Gm)
Argument of perihelion · 1
221 Eos → 193.56°
Average orbital speed · 1
221 Eos → 17.16 km/s
Dimensions · 1
221 Eos → 103.87±3.6 km
Discovered by · 1
221 Eos → Johann Palisa
Discovery date · 1
221 Eos → 18 January 1882

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Important terminology

asteroid eos orbital period named 10 spectral 221 au properties eccentricity km discovered johann palisa axis 22 mean rotation based

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
221 EosAbsolute magnitude (H)7.671.00infobox
221 EosAdjectivesEoan /iːˈoʊ.ən/1.00infobox
221 EosAlternative designationsA882 BA1.00infobox
221 EosAphelion3.3249 AU (497.40 Gm)1.00infobox
221 EosArgument of perihelion193.56°1.00infobox
221 EosAverage orbital speed17.16 km/s1.00infobox
221 EosDimensions103.87±3.6 km1.00infobox
221 EosDiscovered byJohann Palisa1.00infobox
221 EosDiscovery date18 January 18821.00infobox
221 EosEccentricity0.104471.00infobox
221 EosGeometric albedo0.1400±0.0101.00infobox
221 EosInclination10.880°1.00infobox
221 EosLongitude of ascending node141.845°1.00infobox
221 EosMean anomaly66.5202°1.00infobox
221 EosMean motion0° 11m 19.284s / day1.00infobox
221 EosMinor planet categoryMain belt (Eos)1.00infobox
221 EosNamed afterEos1.00infobox
221 EosObservation arc130.21 yr (47561 d)1.00infobox
221 EosOrbital period (sidereal)5.22 yr (1907.8 d)1.00infobox
221 EosPerihelion2.69594 AU (403.307 Gm)1.00infobox
221 EosPronunciation/ˈiːɒs/1.00infobox
221 EosSemi-major axis3.01044 AU (450.355 Gm)1.00infobox
221 EosSpectral typeK1.00infobox
221 EosSynodic rotation period10.443 h (0.4351 d)1.00infobox
221 Eosis alarge main-belt asteroid that was discovered by Austrian astronomer Johann Palisa on January 180.90text

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