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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
Small body data
(713) Luscinia
- Orbit class
- Outer belt
- Semi-major axis
- 3.402 AU
- Eccentricity
- 0.154
- Inclination
- 10.340 °
- Absolute magnitude
- 9.080 H
via Minor Planet Center
Key facts
- Discovered by
- J. Helffrich
- Discovery site
- Heidelberg Obs.
- Discovery date
- 18 April 1911
- Pronunciation
- / l uː ˈ s ɪ n i ə /
- Alternative designations
- 1911 LS
- Observation arc
- 105.00 yr (38350 d)
- Aphelion
- 3.9473 AU (590.51 Gm )
- Perihelion
- 2.8350 AU (424.11 Gm)
- Semi major axis
- 3.3912 AU (507.32 Gm)
- Orbital period sidereal
- 6.24 yr (2281.0 d )
- Mean anomaly
- 133.98 °
- Mean motion
- 0° 9 28.188 / day
- Inclination
- 10.359°
- Longitude of ascending node
- 217.687°
- Argument of perihelion
- 137.252°
- Mean radius
- 52.76 ± 1.55 km
- Synodic rotation period
- 9.9143 h (0.41310 d )
- Geometric albedo
- 0.0410 ± 0.003
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Followed by
- 714 Ulula
- Follows
- 712 Boliviana
- Parent body
- Sun
- Diameter
- 97.968
- Orbital period
- 2292.715071066843
Show 19 more facts
- discoverer or inventor
- Joseph Helffrich
- site of astronomical discovery
- Heidelberg-Königstuhl State Observatory
- provisional designation
- A911 HG
- time of discovery or invention
- 1911-04-18
- Commons category
- 713 Luscinia
- albedo
- 0.048
- rotation period
- 9.9143
- asteroid spectral type
- C-type asteroid
- absolute magnitude
- 9.08
- orbital eccentricity
- 0.1542286532252035
- semi-major axis of an orbit
- 3.402784448300341
- periapsis
- 2.877977585623312
- apoapsis
- 3.92759131097737
- orbital inclination
- 10.34006625790767
- longitude of ascending node
- 217.4457540098263
- argument of periapsis
- 138.6581145448726
- mean anomaly
- 306.777347947136
- time of periapsis
- 2461339.4566013436
- epoch
- November 21, 2025
Sources (2)
via Wikidata · CC0
~1 min read
Encyclopedic overview
713 Luscinia is a large, main belt asteroid orbiting the Sun. It is a member of the Cybele asteroid group.
References
Excerpted from Wikipedia’s “713 Luscinia” article, available under the CC BY-SA 4.0 licence.