Talk:Neptune

Remaining known 14 moons

In the second paragraph of the lead section, why does it say "remaining known 14 moons" and not "remaining known 13 moons"? Gulumeemee (talk) 04:40, 7 September 2017 (UTC)

@Gulumeemee: It's just a mistake, which I've now corrected at your prompting. Thank you! Double sharp (talk) 05:57, 7 September 2017 (UTC)

Struve in naming section of article

Article reads, "Struve came out in favour of the name Neptune on 29 December 1846, to the Saint Petersburg Academy of Sciences."

There are a number of astronomers named Struve. It would be worthwhile to specify which in the body of the article.

--Gaff (talk) 23:47, 26 September 2017 (UTC)

Surface water ocean

This study was presented this summer 2017 with the aim at developing a mission concept to those planets, and it states that ice giants Uranus and Neptune are, by mass, about 65% water and other so-called "ices"; the terminology is "supercritical liquid water". I browsed both Urarus and Neptune articles in Wikipedia and I did not read anything similar suggesting surface water nor such % mass. I'm going to leave this 'on your desk' and am going to let more competent editors decide if this is a required update. The complete report is at [1]. -Cheers, BatteryIncluded (talk) 16:23, 11 October 2017 (UTC)

wow. looks awesome - and relevant - from quick glance. I myself am busy elsewhere in life atm, so don't count on me to include anything soon, but thanks for this post anyway.

If what you write about surface waters, etc. is true, I am quite sure though that there are other more profound articles about it out there already, as this is "just" planning material, not basic research about Neptune. I believe the liquid water aspect is discussed in articles about Ice Giants in general; I vaguely remembers having read about it some time ago. RhinoMind (talk) 02:02, 13 October 2017 (UTC)

I think that the astrobio.net article is misleading. Other articles on the internet describe the mantle (which is apparently what is meant by 'surface oceans' in the astrobio article) in totally different terms - it is a hot (several thousand degrees) slush of water and methane, which in no way resembles the usual concept of oceans. The other article (the actual NASA document) basically indicates that the internal structure of Neptune is almost totally unknown. Computer models don't result in the three-layer model, and the computer models don't agree with the observed fluxes from the planet. 66.41.99.200 (talk) 19:52, 17 July 2018 (UTC)

Semi-protected edit request on 14 January 2018

Triton, Neptune's biggest moon moves in the opposite way than all the other ones. Moopyie (talk) 20:29, 14 January 2018 (UTC)

Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. JTP ^{(talk • contribs)} 20:42, 14 January 2018 (UTC)

This is already there under Neptune#Moons, in any case. Double sharp (talk) 00:28, 15 January 2018 (UTC)

Wrong figure caption

The figure caption of the image in the Observations section is not fully correct. ESA (the European Space Agency) as cited there had nothing to do with this picture. Instead, it was ESO (the Euroean Southern Observatory), as evidenced by the summary of the image.95.90.232.26 (talk) —Preceding undated comment added 23:47, 14 August 2018 (UTC)

Fixed, thanks for noticing that! — Huntster (t @ c) 11:50, 17 August 2018 (UTC)

Updated magnitude range

The new values of brightest and faintest apparent magnitude in the ‘infobox’ were reported in a peer-reviewed journal article that includes updated equations for computing planetary magnitudes. Those formulas will be used to predict magnitudes for future issues of The Astronomical Almanac published by the U.S. Naval Observatory and Her Majesty’s Nautical Almanac Office. The equations were solved at daily intervals over long periods of time in order to determine the magnitude extremes. As noted in the journal article, Neptune began to brighten around 1980 and continued doing so until about 2000 when the brightness leveled off. The faintest magnitude in the ‘infobox’ is from the period before 1980 and the brightest magnitude is for that after 2000. The paper in Astronomy and Computing can be located at https://doi.org/10.1016/j.ascom.2018.08.002. — Preceding unsigned comment added by Planet photometry (talk • contribs) 14:48, 13 September 2018 (UTC)

Its gravity at 1 bar is 11.15 m/s2

How is this relevant? 1 bar in Neptune's atmosphere is not near its apparent "surface". The comparison to Earth's gravity causing the measured air pressure is pointless, as the composition of Neptune's atmosphere is so different, and air pressure depends on local weather anyways. Even on Earth the standard atmospheric pressure at sea level is larger than 1 bar. ♆ CUSH ♆ 08:40, 16 September 2018 (UTC)

The mass is incorrect

The mass listed in the fact sheet near the top is 1.0243x10²⁶, yet the link provided to cite the mass actually lists it as 1.02413x10²⁶. I’d correct it, but the Wikipedia page is protected. Math Machine 4 (talk) 02:02, 17 October 2018 (UTC)

I fixed it. Thanks for catching that! RockMagnetist (DCO visiting scholar) (talk) 15:12, 17 October 2018 (UTC)

Rings of Neptune, discovered when?

The lead claims the rings were found in 1982. This contradicts the Rings of Neptune article, which claims 1984. 108.160.125.102 (talk) 06:36, 18 October 2018 (UTC)

Nevermind, article is corrected. 108.160.125.102 (talk) 02:54, 19 October 2018 (UTC)

All planets are named after gods in the greco-roman mythology — including Earth

On section 1.2, 'Naming', the following sentence appears:

The demand for a mythological name seemed to be in keeping with the nomenclature of the other planets, all of which, except for Earth, were named for deities in Greek and Roman mythology. (emphasis mine)

This is not quite correct. The Greek goddess of the Earth was called Gaia, which became Terra in Latin. Romance languages tend to use a derivation of 'terra' for the planet we live upon (which, in turn, is often synonymous for the ground we walk upon); while non-Romance languages naturally replace it by their own word signifying 'ground', e.g. Earth in English, Erde in German, etc.

Gwyneth Llewelyn (talk) 00:22, 16 November 2018 (UTC)

We are implicitly considering only the English names, as this is the English Wikipedia. The Chinese names for the planets Mercury through Saturn aren't related to the Greco-Roman deities either, for example. Double sharp (talk) 08:51, 16 November 2018 (UTC)

Diamonds at base of mantle or atmosphere

The end of the 2nd paragraph in the Internal Structure section reads:

At a depth of 7,000 km, the conditions may be such that methane decomposes into diamond crystals that rain downwards like hailstones.[55][56][57] Very-high-pressure experiments at the Lawrence Livermore National Laboratory suggest that the base of the mantle may be an ocean of liquid carbon with floating solid 'diamonds'.[58][59][60]

But the cited papers put the depth of diamond crystallization at 7 to 10 thousand km which would be in the atmosphere not the mantle. Thus accumulation could take place at the base of the atmosphere not the mantle. EHC (talk) 17:49, 29 November 2018 (UTC)

Fixed. Serendi^podous 20:20, 29 November 2018 (UTC)

Semi-protected edit request on 21 February 2019

New moon discovered. https://arstechnica.com/science/2019/02/researchers-develop-a-technique-that-spots-tiny-moon-orbiting-neptune/166.82.105.36 (talk) 14:54, 21 February 2019 (UTC)

Neptune#Moons already mentions Hippocamp (moon). NiciVampireHeart 23:21, 21 February 2019 (UTC)

Orbital period is 60189 days, not 60182: according to cited source, and NASA

Under Orbital characteristics, Neptune's (sidereal) Orbital period is given as 60,182 days, citing http://cseligman.com/text/sky/rotationvsday.htm. But this source has 60,189 days, which is the same as on NASA's Neptune Fact Sheet at https://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html. 62.45.140.194 (talk) 18:14, 18 April 2019 (UTC)

Semi-protected edit request on 29 April 2019

Neptune is the 8th planet from the sun 2601:245:4002:8E10:305A:735:8BA7:519A (talk) 22:34, 29 April 2019 (UTC)

This seems to be already mentioned – Þjarkur (talk) 22:45, 29 April 2019 (UTC)

OS

There is an OS named Windows Neptune. It is part of the Windows/Microsoft family of OSs.27.147.206.118 (talk) 10:44, 29 July 2019 (UTC)