(7616) Sadako

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Asteroid
(7616) Sadako
Properties of the orbit ( animation )
Epoch:  4th September 2017 ( JD 2,458,000.5)
Orbit type Outer main belt
Asteroid family Eos family
Major semi-axis 2.9987  AU
eccentricity 0.1120
Perihelion - aphelion 2.6629 AU - 3.3345 AU
Inclination of the orbit plane 9.3910 °
Sidereal period 5.19 a
Mean orbital velocity 17.19 km / s
Physical Properties
Medium diameter 12.182 ± 0.255 km
Albedo 0.227 ± 0.033
Absolute brightness 12.1 mag
history
Explorer Takao Kobayashi
Date of discovery November 6, 1996
Another name 1996 VF 2 , 1975 VA 10 , 1990 RJ 9
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(7616) Sadako is an asteroid of the main belt , of November 6, 1996 by the Japanese amateur astronomers Takao Kobayashi on Oizumi Observatory ( IAU code 411) in the Japanese Gunma Prefecture was discovered.

The asteroid was named on June 14, 2003 after Sadako Sasaki (1943–1955), a survivor of the atomic bombs dropped on Hiroshima and Nagasaki .

The celestial body belongs to the Eos family, a group of asteroids, which typically have large semi-axes from 2.95 to 3.1 AU , bounded inward by the Kirkwood gap of the 7: 3 resonance with Jupiter , and orbital inclinations between 8 ° and 12 °. The group is named after the asteroid (221) Eos . The family is believed to have emerged from a collision more than a billion years ago.

See also

Individual evidence

  1. ↑ The family affiliation of (7616) Sadako in the AstDyS-2 database (English)
  2. ↑ David Vokrouhlický , Miroslav Brož , Alessandro Morbidelli , William Bottke , David Nesvorný , Daniel Lazzaro, Andy Rivkin: Yarkovsky footprints in the Eos family (PDF, English)

Web links