Solar eclipses on Neptune

Short description: When moons of Nepture pass before the Sun

Solar eclipses on Neptune occur when substantial natural satellites of Neptune pass in front of the Sun as seen from the planet.[1][2]

For bodies which appear smaller in angular diameter than the Sun, the proper term would be a transit, and for bodies which are larger than the apparent size of the Sun, the proper term would be an occultation.

Almost all of Neptune's inner moons and Triton can eclipse the Sun as seen from Neptune. The last eclipse on Neptune by Triton occurred in 1953, and the next will be in 2046.[3]

All other satellites of Neptune are too small and/or too distant to produce an umbra.

From this distance, the Sun's angular diameter is reduced to one and a quarter arcminutes across. Here are the angular diameters of the moons that are large enough to fully eclipse the Sun: Naiad, 7–13'; Thalassa, 8–14'; Despina, 14–22'; Galatea, 13–18'; Larissa, 10–14'; Proteus, 13–16'; Triton, 26–28'.

Just because the moons are large enough to fully eclipse the Sun does not necessarily mean that they will do so. Eclipses of the Sun from Neptune are rare due to the planet's long orbital period and large axial tilt of 28 degrees. In addition, the largest moon, Triton, has an orbital inclination of about 25 degrees to Neptune's equator. This makes eclipses of the Sun by Triton rare. Even when such an eclipse does occur, it passes rather quickly, as Triton moves in the opposite direction of Neptune's rotation.

## See also

* Solar eclipse

## References

1. ↑ Cuk, Matija (28 June 2015). "Are there eclipses on other planets? (Intermediate)". Cornell University. https://curious.astro.cornell.edu/about-us/127-observational-astronomy/lunar-and-solar-eclipses/general-questions/772-are-there-eclipses-on-other-planets-intermediate.
2. ↑ Geggel, Laura (5 August 2017). "Do other planets have solar eclipses?". https://www.livescience.com/60037-do-other-planets-have-solar-eclipses.html.
3. ↑ "When was the last time a total solar eclipse on Neptune courtesy of Triton occured [sic, and when will be the next?"] (in en). https://astronomy.stackexchange.com/questions/55613/when-was-the-last-time-a-total-solar-eclipse-on-neptune-courtesy-of-triton-occur/55620#55620.

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Solar eclipses

Lists of eclipses|

| By century|

* Antiquity
* 20th BC
* 19th BC
* 18th BC
* 17th BC
* 16th BC
* 15th BC
* 14th BC
* 13th BC
* 12th BC
* 11th BC
* 10th BC
* 9th BC
* 8th BC
* 7th BC
* 6th BC
* 5th BC
* 4th BC
* 3rd BC
* 2nd BC
* 1st BC
* 1st
* 2nd
* 3rd
* 4th
* 5th
* 6th
* 7th
* 8th
* 9th
* 10th
* 11th
* 12th
* 13th
* 14th
* 15th
* 16th
* 17th
* 18th
* 19th
* 20th
* 21st
* 22nd
* 23rd
* 24th
* 25th
* 26th
* 27th
* 28th
* 29th
* 30th

|

Saros series|

* 110
* 111
* 112
* 113
* 114
* 115
* 116
* 117
* 118
* 119
* 120
* 121
* 122
* 123
* 124
* 125
* 126
* 127
* 128
* 129
* 130
* 131
* 132
* 133
* 134
* 135
* 136
* 137
* 138
* 139
* 140
* 141
* 142
* 143
* 144
* 145
* 146
* 147
* 148
* 149
* 150
* 151
* 152
* 153
* 154
* 155
* 156
* 157
* 158
* 159
* 160
* 161
* 162

Visibility|

* Australia
* China
* Philippines
* Russia
* Ukraine
* United Kingdom
* United States

Historical|

* Mursili's eclipse (1312 BC)
* Assyrian eclipse (763 BC)
* Eclipse of Thales (585 BC)

Total/hybrid eclipses
→ next total/hybrid|

Script error: No such module "Highlighted date list".

Annular eclipses
→ next annular|

Script error: No such module "Highlighted date list".

Partial eclipses
→ next partial|

Script error: No such module "Highlighted date list".

Other bodies|

* Mars
* Moon
* Jupiter
* Neptune
* Pluto
* Saturn
* Uranus

Related topics|

* Eclipse chasing
* Solar viewer
* Planetary transit
* Solar eclipses in fiction

* Book
* Category
* Commons
* Portal
* WikiProject

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Neptune

* Outline of Neptune

Geography|

* Great Dark Spot
* Small Dark Spot
* Rings

NASA image of Neptune

Moons|

* Despina
* Galatea
* Halimede
* Hippocamp
* Laomedeia
* Larissa
* Naiad
* Nereid
* Neso
* Proteus
* Psamathe
* Sao
* Thalassa
* Triton

Astronomy|

| Discovery|

* Urbain Le Verrier
* Johann Gottfried Galle
* John Couch Adams
* Heinrich Louis d'Arrest
* William Lassell

|

General|

* Kuiper belt
* Neptune-crossing minor planets

Trojans|

* 2001 QR322
* 2004 KV18
* 2004 UP10
* 2005 TN53
* 2005 TO74
* 2006 RJ103
* (527604) 2007 VL305
* 2008 LC18
* 2011 HM102

Exploration|

| Past|

* Voyager 2 (1989 flyby)

|

Proposals|

* ODINUS
* Triton Hopper
* Argo
* Trident

Cancelled|

* Mariner Mark II
* Neptune Orbiter
* New Horizons 2

Related|

* Fiction
* Mythology

* Book
* Category
* Portal

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