The value is the radius in km of the said object at the Equator.
A name is preferred even if its a random made up one by yourself. It was discovered in the year 1949 by G. Kuiper. In Greek mythology, the Nereids ˈnɪəriɪdz NEER - ee - idz Greek: Νηρηΐδες Nereides sg. [7], Halimede, which has similar colours, may be a fragment of Nereid that was broken off during a collision. Nereid, the last satellite of Neptune to be discovered before Voyager's recent discoveries, was first seen by Gerard Kuiper in 1949. The equatorial circumference of Nereid is 1068.1 km. Nereid's rotation can be either in the state of forced precession or even chaotic rotation (like Hyperion) due to its highly elliptical orbit.
Its density has been calculated at being 1.5. It was the farthest of Neptune's known moons for a long time (Halimede through Neso have since taken that honour), and is the third biggest, with a diameter of 340 km.
The surface area of Nereid is 363,168.11.
The Mean orbit velocity, that is the speed at which it orbits is 3363.00 km/h. Discovery and naming . Nereid is the third-largest moon of Neptune. Other researchers have so far failed to detect any periodic modulation in Nereid's light curve.
[7] Its spectrum appears to be intermediate between Uranus's moons Titania and Umbriel, which suggests that Nereid's surface is composed of a mixture of water ice and some spectrally neutral material. [2][3], The unusual orbit suggests that it may be either a captured asteroid or Kuiper belt object, or that it was an inner moon in the past and was perturbed during the capture of Neptune's largest moon Triton.
The Escape Velocity of the object is 560 km/h. It was the farthest of Neptune's known moons for a long time (Halimede through Neso have since taken that honour), and is the third biggest, with a diameter of 340 km. [5] However, this determination was later disputed. This means that they may be quite chaotic. [4] It is rather large for an irregular satellite. CS1 maint: Multiple names: authors list (link), "Planetary Satellite Mean Orbital Parameters", "Planetary Satellite Physical Parameters", Monthly Notices of the Royal Astronomical Society. Its mass is estimated/calculated at being 30,872,569,721,802,200,000 kg. Nereid, Moon of Neptune. It is named after the Nereids, sea-nymphs of Greek mythology and attendants of the god Neptune. The larger an object is, the more velocity (speed) is needed to break free from the object.The Semi-Major Axis of the orbit is 5513.4, which is the furthest point from the centre to the edge of an elliptical point.
Nereid was discovered on 1 May 1949 by Gerard P. Kuiper on photographic plates taken with the 82-inch telescope at the McDonald Observatory. [13] Although the images obtained by Voyager 2 do not have a high enough resolution to allow surface features to be distinguished, Voyager 2 was able to measure the size of Nereid and found that it was grey in colour and had a higher albedo than Neptune's other small satellites.[6]. [9], Since 1987 some photometric observations of Nereid have detected large (by ~1 of magnitude) variations of it brightness, which can happen over years and months, but sometimes even over a few days.
[12] Prior to Voyager 2's arrival, observations of Nereid had been limited to ground-based observations that could only establish its intrinsic brightness and orbital elements. The orbital period, i.e. Nereid is a Moon that orbits round the planet Neptune.. Its mass is estimated/calculated at being 30,872,569,721,802,200,000 kg. In any case its rotation should be rather irregular.
It was the second moon of Neptune to be discovered, by Gerard Kuiper in 1949. [9], Nereid is Neptune's third-largest satellite and has an average radius of about 170 kilometres (110 mi). The orbital inclination, the angle at which Nereid orbits in relation to the orbital plane is 7.23 degrees. [8] In 2003, another rotation period of about 11.52 ± 0.14 hours was measured.
They persist even after a correction for distance and phase effects. Until this Voyager 2 image was obtained, all that was known about Nereid was its orbital parameters and intrinsic brightness.
[12] Voyager 2 obtained 83 images with observation accuracies of 70 km (43 mi) to 800 km (500 mi).
Nereid was too far to be properly imaged by the Voyager 2 probe when it visited the Neptune system in 1989.
Very little else is known of Nereid. You can decline to give a name which if that is the case, the comment will be attributed to a random star. [5] The shape of Nereid is not known. The orbital eccentricity is 0.7507, it is the degree at which Nereid orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit. Nereïde (Engels Nereid) is een maan van Neptunus.De maan is in 1949 ontdekt door Gerard Kuiper.Nereïde is genoemd naar de nimfen van de zee uit de Griekse mythologie.De Nereïden waren de vijftig dochters van Nereus en Doris.Nereïde is zeer klein, maar was (naast Triton) een van de 2 reeds bekende manen voordat Voyager 2 Neptunus bezocht. The unusual orbit suggests that it may be a captured asteroid or Kuiper belt object, or possibly that it was perturbed during the capture of Neptune's largest moon Triton. On the other hand, not all astronomers who have observed Nereid have noticed such variations. Nereid is a Moon that orbits round the planet Neptune. There's no register feature and no need to give an email address if you don't need to. The figure is also known as the sidereel period. [6], Nereid orbits Neptune in the prograde direction at an average distance of 5,513,400 km (3,425,900 mi), but its high eccentricity of 0.7507 takes it as close as 1,372,000 km (853,000 mi) and as far as 9,655,000 km (5,999,000 mi).
the period it takes to complete an orbit round Neptune is 360.13619 days.
[1] It was the second and last moon of Neptune to be discovered before the arrival of Voyager 2 (not counting a single observation of an occultation by Larissa in 1981).
To date there is no credible explanation of the variations, but, if they exist, they are likely related to the rotation of Nereid. Its density has been calculated at … In the Larry Niven book Ringworld, Nereid is described as having been leased by the outsiders "half a millennium ago". Nereid or Neptune II, is a moon of Neptune. Its volume is 20579526.
It was the second moon of Neptune to be discovered, by Gerard Kuiper in 1949. Nereid is the third-largest moon of Neptune. Cookies / About Us / Contact Us / Twitter / Facebook, https://solarsystem.nasa.gov/moons/neptune-moons/nereid/in-depth/. The is the average distance in km of the object is from its parent 5513818.00.
[10], The only spacecraft to visit Nereid is Voyager 2, which passed it at a distance of 4,700,000 km (2,900,000 mi)[11] between 20 April and 19 August 1989. [7] The spectrum is markedly different from the outer-Solar-System minor planets, centaurs Pholus, Chiron and Chariklo, suggesting that Nereid formed around Neptune rather than being a captured body. Nereid is the third-largest moon of Neptune.It has a highly eccentric orbit.
For a long time this was the most highly eccentric orbit of any known moon in the solar system, but Bestla, a more recently discovered moon of Saturn has a more eccentric orbit.
https://simple.wikipedia.org/w/index.php?title=Nereid_(moon)&oldid=6516720, Creative Commons Attribution/Share-Alike License.
The Equatorial Radius of the object is 170km.
It is named after the Nereids, sea-nymphs of Greek mythology. He proposed the name in the report of his discovery. The protagonist, Louis Wu, speculates that the outsiders evolved on a gas giant moon similar to Nereid. Nereid was discovered on 1 May 1949 by Gerard P. Kuiper on photographic plates taken with the 82-inch telescope at the McDonald Observatory.He proposed the name in the report of his discovery. Its orbit averages 5,513,400 km in radius, but is very eccentric and varies from 1,353,600 to 9,623,700 kilometres. The surface gravity of the said item is 0.071. The figure comes from N.A.S.A.. Νηρηΐς Nereis are sea nymphs female spirits of sea waters the A Nereid is a sea nymph in Greek mythology. It has a highly eccentric orbit. This page was last changed on 26 April 2019, at 11:21. All messages will be reviewed before being displayed.
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It has a highly eccentric orbit.