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EntityQ148531· pop 30

Also known as Efremiana, (2269) Efremiana

main-belt asteroid

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

Wikidata facts

Instance of
asteroid
Named after
Ivan Yefremov
Followed by
Q255179
Follows
Q148526
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
29.604
Orbital period
2021.765008562718
Show 17 more facts
discoverer or inventor
Nikolai Chernykh
site of astronomical discovery
Crimean Astrophysical Observatory
provisional designation
1978 VE
time of discovery or invention
1976-05-02
orbital eccentricity
0.07827225111510444
orbital inclination
15.40171904531926
periapsis
2.884191957676767
apoapsis
3.374037679363143
semi-major axis of an orbit
3.129114818519955
mean anomaly
100.4790401821644
longitude of ascending node
66.4780512342053
argument of periapsis
34.11507627699284
absolute magnitude
11.12
albedo
0.11
rotation period
6.458
time of periapsis
2460436.208312405
Sources (2)

via Wikidata · CC0

~2 min read

Encyclopedic overview

The following is a partial list of minor planets, running from minor-planet number 2001 through 3000, inclusive. The primary data for this and other partial lists is based on JPL's "Small-Body Orbital Elements" and data available from the Minor Planet Center. Critical list information is also provided by the MPC, unless otherwise specified from Lowell Observatory. A detailed description of the table's columns and additional sources are given on the main page including a complete list of every page in this series, and a statistical break-up on the dynamical classification of minor planets.

Also see the summary list of all named bodies in numerical and alphabetical order, and the corresponding naming citations for the number range of this particular list. New namings may only be added to this list after official publication, as the preannouncement of names is condemned by the Working Group for Small Bodies Nomenclature of the International Astronomical Union.

Excerpted from Wikipedia’s “Q148531” article, available under the CC BY-SA 4.0 licence.