1566 Icarus

1566 Icarus
Radar image of Icarus taken by the Goldstone Observatory in June 2015
Discovery[1]
Discovered byW. Baade
Discovery sitePalomar Obs.
Discovery date27 June 1949
Designations
(1566) Icarus
Pronunciation/ˈɪkərəs/[2]
Named after
Icarus[3] (Greek mythology)
1949 MA
AdjectivesIcarian /aɪˈkɛəriən/[5]
Symbol (astrological)
Orbital characteristics[4]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 0
Observation arc72.11 yr (26,339 d)
Aphelion1.9697 AU
Perihelion0.1865 AU
1.0781 AU
Eccentricity0.8270
1.12 yr (409 d)
180.73°
0° 52m 49.8s / day
Inclination22.812°
87.981°
31.419°
Earth MOID0.0341 AU (13.3 LD)
Physical characteristics
Dimensions1.61 km × 1.60 km × 1.17 km[6]
16.35[1][4]

1566 Icarus (/ˈɪkərəs/ IK-ə-rəs; provisional designation: 1949 MA) is a large near-Earth object of the Apollo group and the lowest numbered potentially hazardous asteroid.[20] It has an extremely eccentric orbit (0.83) and measures approximately 1.4 km (0.87 mi) in diameter. In 1968, it became the first asteroid ever observed by radar.[3] Its orbit brings it closer to the Sun than Mercury and further out than the orbit of Mars, which also makes it a Mercury-, Venus-, and Mars-crossing asteroid. This stony asteroid and relatively fast rotator with a period of 2.27 hours was discovered on 27 June 1949, by German astronomer Walter Baade at the Palomar Observatory in California.[1] It was named after the mythological Icarus.[3]

  1. ^ a b c d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ "Icarus". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ a b c Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference jpldata was invoked but never defined (see the help page).
  5. ^ "Icarian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  6. ^ a b c Cite error: The named reference Greenberg-2017 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Nugent-2015 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Harris-1998a was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Mainzer-2012 was invoked but never defined (see the help page).
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  19. ^ Cite error: The named reference Mahapatra-1999 was invoked but never defined (see the help page).
  20. ^ Cite error: The named reference MPC-PHA-list was invoked but never defined (see the help page).


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