S/2015 (136472) 1
Moon of Makemake / From Wikipedia, the free encyclopedia
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S/2015 (136472) 1, unofficially nicknamed MK2 by the discovery team,[2] is the only known moon of the trans-Neptunian dwarf planet Makemake.[1][4] It is estimated to be 175 km (110 mi) in diameter and has a semi-major axis of at least 21,000 km (13,000 mi) from Makemake.[1] Its orbital period is at least 12 days if it has a circular orbit.[1][5][4] Observations leading to its discovery occurred in April 2015, using the Hubble Space Telescope's Wide Field Camera 3, and its discovery was announced on 26 April 2016.[2]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by |
|
Discovery date | April 2015 |
Designations | |
MK2 (unofficial)[2] | |
Orbital characteristics[1]: 3 | |
>21000 km | |
Eccentricity | unknown |
>12.4 days | |
Inclination | 63°–87° wrt ecliptic (prograde)[1]: 3 |
Satellite of | Makemake |
Physical characteristics | |
~175 km (4% albedo; best fit)[1]: 4 175–250 km (2–4% albedo)[lower-alpha 1] | |
Albedo | 0.04 (best fit)[1]: 4 0.02–0.04[1]: 4 |
25.0[3] | |
7.89±0.04[1]: 3 | |
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