|
Collection:
|
|
NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
|
|
Title:
|
|
Asteroid Ida and Its Moon
Title
Asteroid Ida and Its Moon
Title
|
|
Original Caption Released with Image:
|
|
This is the first full picture showing both asteroid 243 Ida and its newly discovered moon to be transmitted to Earth from the National Aeronautics and Space Administration's (NASA's) Galileo spacecraft--the first conclusive evidence that natural satellites of asteroids exist. Ida, the large object, is about 56 kilometers (35 miles) long. Ida's natural satellite is the small object to the right. This portrait was taken by Galileo's charge-coupled device (CCD) camera on August 28, 1993, about 14 minutes before the Jupiter-bound spacecraft's closest approach to the asteroid, from a range of 10,870 kilometers (6,755 miles). Ida is a heavily cratered, irregularly shaped asteroid in the main asteroid belt between Mars and Jupiter--the 243rd asteroid to be discovered since the first was found at the beginning of the 19th century. Ida is a member of a group of asteroids called the Koronis family. The small satellite, which is about 1.5 kilometers (1 mile) across in this view, has yet to be given a name by astronomers. It has been provisionally designated '1993 (243) 1' by the International Astronomical Union. ('1993' denotes the year the picture was taken, '243' the asteroid number and '1' the fact that it is the first moon of Ida to be found.) Although appearing to be 'next' to Ida, the satellite is actually in the foreground, slightly closer to the spacecraft than Ida is. Combining this image with data from Galileo's near-infrared mapping spectrometer, the science team estimates that the satellite is about 100 kilometers (60 miles) away from the center of Ida. This image, which was taken through a green filter, is one of a six-frame series using different color filters. The spatial resolution in this image is about 100 meters (330 feet) per pixel.
Original_Caption_Rel eased_with_Image
This is the first full picture showing both asteroid 243 Ida and its newly discovered moon to be transmitted to Earth from the National Aeronautics and Space Administration's (NASA's) Galileo spacecraft--the first conclusive evidence that natural satellites of asteroids exist. Ida, the large object, is about 56 kilometers (35 miles) long. Ida's natural satellite is the small object to the right. This portrait was taken by Galileo's charge-coupled device (CCD) camera on August 28, 1993, about 14 minutes before the Jupiter-bound spacecraft's closest approach to the asteroid, from a range of 10,870 kilometers (6,755 miles). Ida is a heavily cratered, irregularly shaped asteroid in the main asteroid belt between Mars and Jupiter--the 243rd asteroid to be discovered since the first was found at the beginning of the 19th century. Ida is a member of a group of asteroids called the Koronis family. The small satellite, which is about 1.5 kilometers (1 mile) across in this view, has yet to be given a name by astronomers. It has been provisionally designated '1993 (243) 1' by the International Astronomical Union. ('1993' denotes the year the picture was taken, '243' the asteroid number and '1' the fact that it is the first moon of Ida to be found.) Although appearing to be 'next' to Ida, the satellite is actually in the foreground, slightly closer to the spacecraft than Ida is. Combining this image with data from Galileo's near-infrared mapping spectrometer, the science team estimates that the satellite is about 100 kilometers (60 miles) away from the center of Ida. This image, which was taken through a green filter, is one of a six-frame series using different color filters. The spatial resolution in this image is about 100 meters (330 feet) per pixel.
Original Caption Released with Image
|
|
Addition Date:
|
|
1996-02-01
Addition_Date
1996-02-01
Addition Date
|
|
Produced By:
|
|
JPL
Produced_By
JPL
Produced By
|
|
Mission:
|
|
Galileo
|
|
Spacecraft:
|
|
Galileo Orbiter
Spacecraft
Galileo Orbiter
Spacecraft
|
|
Target Name:
|
|
Ida
Target_Name
Ida
Target Name
|
|
Is a satellite of:
|
|
Sol (our sun)
Is_a_satellite_of
Sol (our sun)
Is a satellite of
|
|
Instrument:
|
|
Solid-State Imaging
Instrument
Solid-State Imaging
Instrument
|
|
Product Size:
|
|
1700 samples x 1260 lines
Product_Size
1700 samples x 1260 lines
Product Size
|
|
Primary Data Set:
|
|
Galileo EDRs
Primary_Data_Set
Galileo EDRs
Primary Data Set
|
|
Producer ID:
|
|
P43731
Producer_ID
P43731
Producer ID
|
|
facet_what:
|
|
Sun
facet_what
Sun
facet_what
|
|
facet_what:
|
|
Moon
facet_what
Moon
facet_what
|
|
facet_what:
|
|
Jupiter
facet_what
Jupiter
facet_what
|
|
facet_what:
|
|
Earth
facet_what
Earth
facet_what
|
|
facet_what:
|
|
Galileo
facet_what
Galileo
facet_what
|
|
facet_what:
|
|
Galileo Orbiter
facet_what
Galileo Orbiter
facet_what
|
|
facet_what:
|
|
Solid-State Imaging
facet_what
Solid-State Imaging
facet_what
|
|
facet_what:
|
|
Spectrometer
facet_what
Spectrometer
facet_what
|
|
facet_what:
|
|
Mars
facet_what
Mars
facet_what
|
|
facet_where:
|
|
Jupiter
facet_where
Jupiter
facet_where
|
|
facet_where:
|
|
Mars
facet_where
Mars
facet_where
|
|
facet_where:
|
|
Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
|
|
facet_when:
|
|
19th century
facet_when
19th century
facet_when
|
|
facet_when:
|
|
August 28, 1993
facet_when
August 28, 1993
facet_when
|
|
facet_when_year:
|
|
1993
facet_when_year
1993
facet_when_year
|
|
Image #:
|
|
PIA00136
|
|
UID:
|
|
SPD-PHOTJ-PIA00136
UID
SPD-PHOTJ-PIA00136
UID
|
|
orignial url:
|
orignial_url
orignial url
|
