Skip to content
EntityQ4542499· pop 6

(24855) 1995 YM4

Sign in to save

minor planet

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

(24855) 1995 YM4

Orbit class
Main-belt
Semi-major axis
2.575 AU
Eccentricity
0.278
Inclination
5.047 °
Absolute magnitude
14.610 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Followed by
24856 Messidoro
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1509.264344890001
Show 16 more facts
time of discovery or invention
1995-12-22
discoverer or inventor
Takeshi Urata
site of astronomical discovery
Nachi-Katsuura Observatory
provisional designation
1995 YM4
orbital eccentricity
0.2785950842426091
albedo
0.171
orbital inclination
5.04726156169255
periapsis
1.857620610528952
apoapsis
3.29238757475952
semi-major axis of an orbit
2.575004092644236
mean anomaly
96.70636274576212
longitude of ascending node
101.9116912456462
argument of periapsis
322.0461202883499
absolute magnitude
14.61
time of periapsis
2460595.068152177
Sources (3)

via Wikidata · CC0

Available in 6 languages

via Wikidata sitelinks · CC0