File:001189-asteroid_shape_model_(1189)_Terentia.png · Wikimedia Commons · See Wikimedia Commons
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
(1189) Terentia
- Orbit class
- Main-belt
- Semi-major axis
- 2.932 AU
- Eccentricity
- 0.111
- Inclination
- 9.865 °
- Absolute magnitude
- 9.970 H
via Minor Planet Center
Key facts
- Discovered by
- G. Neujmin
- Discovery site
- Simeiz Obs.
- Discovery date
- 17 September 1930
- Named after
- Lidiya Terent'eva, ( orbit computer )
- Alternative designations
- 1930 SG · 1935 SK 2 , A915 TJ
- Minor planet category
- main-belt · ( outer ) , Terentia
- Observation arc
- 101.46 yr (37,057 days)
- Aphelion
- 3.2681 AU
- Perihelion
- 2.5914 AU
- Semi major axis
- 2.9298 AU
- Orbital period sidereal
- 5.01 yr (1,832 days)
- Mean anomaly
- 103.65 °
- Mean motion
- 0° 11 47.4 / day
- Inclination
- 9.8671°
- Longitude of ascending node
- 275.24°
- Argument of perihelion
- 95.571°
- Dimensions
- 55.40 ± 14.41 km , 55.88 ± 3.2 km , 55.94 km (derived) , 57.23 ± 17.09 km , 59.246 ± 0.201 km , 61.140 ± 1.045 km , 62.81 ± 0.85 km , 70.90 ± 0.51 km
- Synodic rotation period
- 19.30 ± 0.01 h , 19.308 ± 0.002 h
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Followed by
- 1190 Pelagia
- Follows
- 1188 Gothlandia
- Parent body
- Sun
- Minor-planet group
- asteroid belt
- Diameter
- 59.246
- Orbital period
- 1834.365175917364
- Image
- 001189-asteroid shape model (1189) Terentia.png
Show 19 more facts
- discoverer or inventor
- Grigory Neujmin
- site of astronomical discovery
- Simeiz Observatory
- provisional designation
- A915 TJ
- time of discovery or invention
- 1930-09-17
- orbital eccentricity
- 0.1111608115827193
- albedo
- 0.042
- orbital inclination
- 9.864575157210403
- periapsis
- 2.606642313914609
- apoapsis
- 3.258630837590221
- semi-major axis of an orbit
- 2.932636575752415
- mean anomaly
- 332.0921747520202
- longitude of ascending node
- 275.1548045322746
- argument of periapsis
- 95.92643691001436
- absolute magnitude
- 9.98
- Commons category
- 1189 Terentia
- rotation period
- 19.308
- asteroid spectral type
- C-type asteroid
- time of periapsis
- 2461142.7031743624
- epoch
- November 21, 2025
Sources (2)
via Wikidata · CC0
~2 min read
Encyclopedic overview
1189 Terentia, provisional designation 1930 SG, is a carbonaceous Terentian asteroid from the outer regions of the asteroid belt, approximately 56 kilometers in diameter and the namesake of its family. The asteroid was discovered by Russian astronomer Grigory Neujmin at Simeiz Observatory on 17 September 1930.
Classification
Excerpted from Wikipedia’s “1189 Terentia” article, available under the CC BY-SA 4.0 licence.