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Picture of the Day · NASA

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
Key facts
- Discovered by
- E. Delporte
- Discovery site
- Uccle Obs.
- Discovery date
- 24 September 1935
- Pronunciation
- / æ f r oʊ ˈ d aɪ t iː /
- Named after
- Aphrodite , (Greek goddess)
- Alternative designations
- 1935 SS · A914 TC
- Minor planet category
- main-belt · ( outer ), Eos
- Adjectives
- Aphrodisian / æ f r oʊ ˈ d ɪ z i ə n /
- Observation arc
- 83.08 yr (30,344 d)
- Aphelion
- 3.2896 AU
- Perihelion
- 2.7485 AU
- Semi major axis
- 3.0190 AU
- Orbital period sidereal
- 5.25 yr (1,916 d)
- Mean anomaly
- 35.092 °
- Mean motion
- 0° 11 16.44 / day
- Inclination
- 11.192°
- Longitude of ascending node
- 54.359°
- Argument of perihelion
- 257.03°
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Named after
- Aphrodite
- Followed by
- Q138624
- Follows
- 1387 Kama
- Parent body
- Sun
- Minor-planet group
- asteroid belt
- Diameter
- 21.355
- Orbital period
- 1919.482000216246
- Image
- 001388-asteroid shape model (1388) Aphrodite.png
Show 18 more facts
- discoverer or inventor
- Eugène Joseph Delporte
- site of astronomical discovery
- Royal Observatory of Belgium
- provisional designation
- A914 TC
- time of discovery or invention
- 1935-09-24
- orbital eccentricity
- 0.08873190698314042
- albedo
- 0.144
- absolute magnitude
- 11.15
- orbital inclination
- 11.18203428519978
- periapsis
- 2.754460669854443
- apoapsis
- 3.290874815854223
- semi-major axis of an orbit
- 3.022667742854333
- mean anomaly
- 123.8698012635945
- longitude of ascending node
- 54.31793624316022
- argument of periapsis
- 258.9334319310063
- Commons category
- 1388 Aphrodite
- rotation period
- 11.9432
- time of periapsis
- 2460340.0392947337
- epoch
- November 21, 2025
Sources (3)
via Wikidata · CC0
~4 min read
Encyclopedic overview
1388 Aphrodite (prov. designation: 1935 SS) is an asteroid of the Eos family from the outer regions of the asteroid belt, approximately 22 kilometers (14 miles) in diameter. It was discovered on 24 September 1935, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The likely elongated K-type asteroid has a rotation period of 11.9 hours. It was named after the Greek goddess Aphrodite from Greek mythology.
Orbit and classification
Excerpted from Wikipedia’s “1388 Aphrodite” article, available under the CC BY-SA 4.0 licence.