Image by NoName_13 on Pixabay · Pixabay License
In the Vinony graph
Within Vinony's link graph, 550 Senta is referenced by 8 other articles, and connects out to Sun, day and comet.
Vinony files it under Astronomical objects discovered in 1904, Background asteroids and Discoveries by Max Wolf.
Its subject is documented across 40 Wikipedia language editions.
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
- Max Wolf
- Discovery site
- Heidelberg
- Discovery date
- 16 November 1904
- Pronunciation
- German: [ ˈzɛntaː ]
- Alternative designations
- 1904 PL
- Observation arc
- 115.33 yr (42124 d)
- Aphelion
- 3.1653 AU (473.52 Gm )
- Perihelion
- 2.0115 AU (300.92 Gm)
- Semi major axis
- 2.5884 AU (387.22 Gm)
- Orbital period sidereal
- 4.16 yr (1521.1 d )
- Mean anomaly
- 17.4133 °
- Mean motion
- 0° 14 12.012 / day
- Inclination
- 10.108°
- Longitude of ascending node
- 270.702°
- Argument of perihelion
- 45.342°
- Mean radius
- 18.875 ± 1.9 km
- Synodic rotation period
- 20.555 h (0.8565 d )
- Geometric albedo
- 0.2215 ± 0.052
via Wikipedia infobox
Wikidata facts
- Diameter
- 37.434
- Orbital period
- 1522.459812398752
- Image
- 550Senta (Lightcurve Inversion).png
Show 15 more facts
- provisional designation
- A903 NA
- time of discovery or invention
- 1904-11-16
- orbital inclination
- 10.10609363508616
- Commons category
- 550 Senta
- albedo
- 0.225
- rotation period
- 20.555
- absolute magnitude
- 9.34
- orbital eccentricity
- 0.2220037217471015
- semi-major axis of an orbit
- 2.589991112565251
- periapsis
- 2.015003446283849
- apoapsis
- 3.164978778846652
- longitude of ascending node
- 270.6609601024431
- argument of periapsis
- 45.35393123715616
- mean anomaly
- 102.1277938189664
- time of periapsis
- 2460568.5959393936
Sources (2)
via Wikidata · CC0
~1 min read
Encyclopedic overview
550 Senta is a minor planet orbiting the Sun that was discovered by German astronomer Max Wolf on 16 November 1904, from Heidelberg.
Photometric observations of this asteroid made at the Torino Observatory in Italy during 1990–1991 were used to determine a synodic rotation period of 20.555 ± 0.01 hours.
Excerpted from Wikipedia’s “550 Senta” article, available under the CC BY-SA 4.0 licence.