The Voyager 2 Encounter with the Neptunian System

@article{Stone1989TheV2,
  title={The Voyager 2 Encounter with the Neptunian System},
  author={Edward C. Stone and Ellis D. Miner},
  journal={Science},
  year={1989},
  volume={246},
  pages={1417 - 1421}
}
An overview of the Voyager 2 encounter with Neptune is presented, including a brief discussion of the trajectory, the planned observations, and highlights of the results described in the 11 companion papers. Neptune's blue atmosphere has storm systems reminiscent of those in Jupiter's atmosphere. An optically thin methane ice cloud exists near the 1.5-bar pressure level, and an optically thick cloud exists below 3 bars. Neptune's magnetic field is highly tilted and offset from the planet's… Expand

Topics from this paper

Geophysics news 1990: Voyager 2 at Neptune and Triton
Voyager 2 completed its “grand tour” of the outer solar system in 1989 by returning the first in situ observations of Neptune, its rings, and its satellites. The probe revealed that the NeptunianExpand
The Encounter of Voyager 2 with Neptune’s Magnetosphere
The particles and fields complement of instruments on the Voyager 2 spacecraft performed a comprehensive set of measurements during the encounter with the Neptune system on August 24 through 28,Expand
Design of a low cost mission to the Neptunian system
Visited only by Voyager 2 in 1989, Neptune and its moon Triton hold important clues to the formation and evolution of the solar system and exoplanetary systems. Neptune-sized planets are the mostExpand
The Voyager encounter with Neptune
The Voyager Neptune/Interstellar Mission is the continuation of the NASA program of exploration of the outer solar system. The prior phases of the Voyager program included encounters with Jupiter,Expand
The atmosphere of Neptune: Results of radio occultation measurements with the Voyager 2 spacecraft
Radio tracking data acquired during Voyager 2's occultation by Neptune have been used to study the thermal structure and composition of Neptune's troposphere and stratosphere. The occultation beganExpand
Neptune's Triton: A moon rich in dry ice and carbon
The encounter of the spacecraft Voyager 2 with Neptune and its large satellite Triton in August 1989 will provide a crucial test of ideas regarding the origin and chemical composition of the outerExpand
A model of dust production in the Neptune ring system
Voyager 2 images of the Neptunian ring system show it to be relatively dusty with the fraction of micron-sized dust particles in the rings between about 0.2 and 0.7 (Smith et al 1989). We apply aExpand
Neptune and Triton: Essential pieces of the Solar System puzzle
The planet Neptune and its largest moon Triton hold the keys to major advances across multiple fields of Solar System science. The ice giant Neptune played a unique and important role in the processExpand
Triton, Pluto, Centaurs, and Trans-Neptunian Bodies
The diverse populations of icy bodies of the outer Solar System (OSS) give critical information on the composition and structure of the solar nebula and the early phases of planet formation. The twoExpand
Winds of Neptune - Voyager observations of cloud motions
High temporal and spatial resolution images acquired from Voyager cameras have been used to measure cloud motions to improve the meridional profile of the zonal mean circulation on Neptune. A wideExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 25 REFERENCES
Neptune's Wind Speeds Obtained by Tracking Clouds in Voyager Images
TLDR
Images of Neptune obtained by the narrow-angle camera of the Voyager 2 spacecraft reveal large-scale cloud features that persist for several months or longer, and wind speeds computed with respect to this radio period are roughly the same for all the planets ranging from Venus to Neptune. Expand
Occultation by a Possible Third Satellite of Neptune
TLDR
The 24 May 1981 close approach of Neptune to an uncataloged star was photoelectrically monitored from two observatories separated by 6 kilometers parallel to the occultation track, and an 8.1-second drop in signal is interpreted as resulting from the passage of a third satellite of Neptune in front of the star. Expand
The Voyager 2 Encounter with Uranus
The Voyager Uranus/Interstellar Mission is the continuation of the NASA program of exploration of the outer solar system. The first phase of the Voyager program included encounters with Jupiter andExpand
Neptune's Story
TLDR
It is conjectured that Triton was captured from a heliocentric orbit as the result of a collision with what was then one of Neptune's regular satellites, thus accounting for that satellite's highly eccentric and inclined orbit. Expand
Occultation detection of a neptunian ring-like arc
The apparent closest approach of the star SAO186001 to Neptune was observed photoelectrically on 22 July 1984 at Cerro Tololo Inter-American Observatory. A 32% signal drop lasting about 1.2 s wasExpand
The Voyager missions to the outer system
The twelve papers comprising this issue provide a review of the breadth of the scientific investigations which will be undertaken by the NASA Voyager Project. The objectives of the Voyager MissionsExpand
On the origin of Triton and Pluto
Lyttleton hypothesized long ago that Triton and Pluto originated as adjacent prograde satellites of Neptune1. With the presently accepted masses of Triton and Pluto–Charon2,3, however, the momentumExpand
Gas drag in primordial circumplanetary envelopes: A mechanism for satellite capture
Abstract Some natural satellites may have been captured due to the gas drag they experienced in passing through primordial circumplanetary nebulas. This paper models such an encounter and derives theExpand
The 7 and 25 June 1985 Neptune occultations: Constraints on the putative Neptune “arc”
Abstract Stellar occultations by Neptune on 7 and 25 June 1985 were observed in the K band from Sutherland (SAAO) to search for conforming evidence of the ring-like “arc” reported by Hubbard et al. (Expand
Some remarks on the capture of Triton and the origin of Pluto
Abstract Harrington and Van Flandern (1979, Icarus 39, 131–136) suggests that the irregular features of the Neptunian satellite system and Pluto's escape were caused by an encounter with a massiveExpand
...
1
2
3
...