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20952 Tydeus

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Also known as (20952) Tydeus

Jupiter trojan

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

(20952) Tydeus

Orbit class
Jupiter Trojan
Semi-major axis
5.164 AU
Eccentricity
0.084
Inclination
9.987 °
Absolute magnitude
11.740 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Named after
Tydeus
Followed by
(20953) 1068 T-3
Parent body
Sun
Orbital period
4286.484568352009
Show 16 more facts
discoverer or inventor
Tom Gehrels
site of astronomical discovery
Palomar Observatory
provisional designation
5151 T-2
time of discovery or invention
1973-09-25
orbital eccentricity
0.08453897501823612
absolute magnitude
11.74
orbital inclination
9.987311777858528
periapsis
4.727611180912084
apoapsis
5.600761195194827
semi-major axis of an orbit
5.164186188053455
mean anomaly
108.4322844154704
longitude of ascending node
314.8213602754661
argument of periapsis
92.3500969480462
apparent magnitude
19.17
time of periapsis
2459709.4074615054
Sources (4)

via Wikidata · CC0