ๅฐๆๆ2004 FHใ้้
Asteroid 2004 FH Whizzes By
ๅ
้ฑใๅฐใใชๅฐๆๆใๅฐ็ใซ็ฐๅธธใซๆฅ่ฟใใพใใใๅฐๆๆ 2004 FH ใฏๅฑ้บใๅใผใใใฎใงใฏใใใพใใใงใใใใๅ็ผ้กใง่ฆใใใปใฉๆใใใชใใพใใใๅฐ็ๅๅพใฎ 7 ๅใฎ่ท้ขใ้้ใใใใฎๅฐๆๆใฎๆฅ่ฟใฏใใใใพใงไบๆธฌใใใฆใใไธญใงๆๆฅ่ฟใงใใใใ็บ่ฆใใใใฎใฏใใใ 2 ๆฅๅใงใใใไธใฎๅ็ใฏใ็ดๅพ 30 ใกใผใใซใฎ 2004 FH ใๆๆฅ่ฟๆใฎ 3 ๆ 18 ๆฅใซในใคในใใ็ฉบใๆจชๅใๆงๅญใๆฎๅฝฑใใใใฎใงใใ็ด 30 ๅ้ใฎไธ่จใฎใฟใคใ ใฉใในๅ็ปใฎไธญๅฟใซไฝ็ฝฎใใใใฎๅฐๆๆใฏใ่ปขใใ่ฝใกใใซใคใใฆๆใใใๅคๅใใพใใใใฎใตใคใบใฎๅฐๆๆใๅฐ็ใฎใใฎ่ท้ขใ้้ใใใฎใฏใ็ด 2 ๅนดใซ 1 ๅใงใใ2004 FH ใๅฐ็ใซ่ก็ชใใฆใใใใๅคงๆฐๅใง็ใๅฐฝใใฆใใๅฏ่ฝๆงใใใใพใใใใใใๅฐ็ไธใฎๅคงใใช่ก็ช็่ทกใฏใ้ ใๆใซๅฎ้ใซๅฐ็ใซ่ก็ชใใใใๅคงใใชๅฐๆๆใๅฝๆใฎๅญๅจใ็ฉ่ชใฃใฆใใพใใๅคฉๆๅญฆ่
ใใกใฏใๅฐ็ใใใๅฎๅ
จใชๅ ดๆใซใใใใจใ็ฎๆจใซใๆฝๅจ็ใซๅฑ้บใชๅฐๆๆใฎ็บ่ฆใ่ฟฝ่ทกใ็ ็ฉถใ็ถใใฆใใพใใ
ๅๆ๏ผEnglish๏ผ
Last week, a small asteroid approached unusually close to the Earth. Asteroid 2004 FH posed no danger, but became bright enough to see with binoculars. Passing only 7 Earth radii away, this asteroid pass was the closest yet that was previously predicted, although it was discovered only two days before. Pictured above, the 30-meter sized 2004 FH was imaged from Switzerland crossing the sky on March 18, near its closest approach. The asteroid, centered in the above time-lapse movie covering about 30 minutes, changes in brightness as it tumbles by. An asteroid this size passes this close to Earth about every two years. Were 2004 FH to have struck the Earth, it would have likely burned up in the atmosphere. Large impact features on the Earth are testaments, however, to larger asteroids and comets that actually impacted the Earth in the distant past. Astronomers continue to discover, track, and study potentially hazardous asteroids with a goal of making planet Earth a safer place.
๏ผผ ใใฎๆๅใๅฎๅฎไปฒ้ใซใทใงใข ๏ผ
ๅฎๅฎใXใงใทใงใข
ยฉ
S. Sposetti & R. Behrend
(Geneva Obs.)
/ APOD