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EntityQ150689· pop 32· linked from 6 articles

Also known as Alku

asteroid

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

Small body data

3037 Alku (1944 BA)

Orbit class
Main-belt Asteroid
Diameter
29.876 km
Albedo
0.044
Rotation period
11.844 h
Absolute magnitude
11.790 H
Earth MOID
1.210 AU

via NASA/JPL Small-Body Database

Wikidata facts

Instance of
asteroid
Followed by
Q918740
Follows
3036 Krat
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
29.876
Orbital period
1597.767510117762
Show 19 more facts
discoverer or inventor
Yrjö Väisälä
site of astronomical discovery
Iso-Heikkilä Observatory
provisional designation
1979 BH
time of discovery or invention
1944-01-17
orbital eccentricity
0.1863372728805172
orbital inclination
19.00788287616577
periapsis
2.176312189446982
apoapsis
3.173108687066636
semi-major axis of an orbit
2.674710438256809
mean anomaly
283.9690337000894
longitude of ascending node
107.7176471311711
argument of periapsis
331.2585840558648
absolute magnitude
11.8
Commons category
3037 Alku
albedo
0.044
rotation period
11.844
asteroid spectral type
C-type asteroid
time of periapsis
2461337.9439103245
Sources (2)

via Wikidata · CC0