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سیارک ۲۴۳

File:243_ida_crop.jpg · Wikimedia Commons · See Wikimedia Commons

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سیارک ۲۴۳

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Also known as (243) Ida, Ida

سیارک

AI overview

243 Ida is a rocky asteroid located in the main belt between Mars and Jupiter. It's notable because it was visited by a spacecraft in 1993 and was found to have its own small moon orbiting it, helping scientists better understand the structure and composition of asteroids.

AI-generated from the Wikipedia summary — may contain errors.

Picture of the Day · NASA

Pathfinder on Mars

Pathfinder on Mars

2026-07-04

On July 4th, 1997, using its own array of fireworks, a parachute, and a cocoon of airbags, the Mars Pathfinder spacecraft bounced like a giant beach ball at least 15 times before it came to rest on the surface of Mars at 10:07 AM Pacific Daylight Time. After its then novel airbag-assisted landing sequence was completed, Pathfinder transmitted this color mosaic to mission operators on Earth. In the scene from another world, the Mars Sojourner robot rover is visible in the foreground, crouched on top of the unfolded Pathfinder. About the size of a large house cat, the six-wheeled, solar-powered Sojourner became the first successful Martian rover. Surrounding Pathfinder are deflated airbags and the rock-strewn terrain of the Ares Vallis floodplain. In the distance Martian hills appear against a dusty brownish sky. The Pathfinder lander was subsequently renamed the Carl Sagan Memorial Station.

via NASA APOD

Wikidata facts

Instance of
asteroid
Named after
Ida
Followed by
244 Sita
Parent body
Sun
Child body
Dactyl
Minor-planet group
asteroid belt
Diameter
32
Radius
15.7
Mass
42000000000000000
Orbital period
1768.994774518883
Image
243 ida crop.jpg
Show 27 more facts
discoverer or inventor
Johann Palisa
site of astronomical discovery
Vienna Observatory
Commons category
243 Ida
provisional designation
A884 SB
time of discovery or invention
1884-09-29
asteroid family
Koronis family
asteroid spectral type
S-type asteroid
Commons gallery
(243) Ida
orbital inclination
1.130114887490663
albedo
0.262
temperature
200
rotation period
4.634
density
2.6
surface gravity
1.1
right ascension
168.76
declination
-2.88
absolute magnitude
10.08
orbital eccentricity
0.04554826377288688
semi-major axis of an orbit
2.862543414671485
periapsis
2.732159532158688
apoapsis
2.992927297184282
longitude of ascending node
323.5483160421322
argument of periapsis
113.7885216058694
mean anomaly
8.484984861571803
time of periapsis
2460958.805850328
maintained by WikiProject
WikiProject Astronomical objects
Sources (6)

via Wikidata · CC0

Gallery (18)