Orbital Mechanics Guides

Introduction

Here are some links to orbital mechanics stuff and dynamics in general.

Links

Three Degree of Freedom (Orbital)

https://orbital-mechanics.space/the-n-body-problem/circular-restricted-three-body-problem.html

Six Degree of Freedom (Attitude)

https://en.wikipedia.org/wiki/Tennis_racket_theorem

Lunar Informational Resources

Introduction

Here are some lunar informational tools and resources.

Lunar Season Calculator

https://www.lpi.usra.edu/lunar/tools/lunarseasoncalc/

As lunar seasons do not correspond to consistent calendar dates, this Excel workbook tool was developed to allow users to efficiently explore expected future seasonal cycles using one of two methods. The first is a direct lookup of subsolar latitude and hemispheric seasonal state for a user-defined date. The second allows the user to specify a subsolar latitude range and temporal search window and will return all date ranges for which the subsolar latitude criterion is met. Both options provide plots that place the results in context.

Subsolar latitude values were calculated for 00:00:00 UTC on each day between 1 Jan 2020 and 31 Dec 2029 using the SpiceyPy subslr module and the following kernels: naif0012.tls (LSK), de438.bsp (SPK), moon_080317.tf (FK), pck00010.tpc (PCK), and moon_pa_de421_1900-2050.bpc (PCK) [3, 4]. Reported values have about ±0.04° uncertainty due to the maximum progression of the true value over the course of 24 hours; this is assumed to be higher than the degree of precision achieved with SPICE kernels over the decade the calculations cover.

The Lunar Season Calculator was developed by Sam Cartwright and Jordan Bretzfelder. We thank Dr. David Kring and LPI for their interest in hosting the tool. We are also greatly indebted to Andrew Annex and the other contributors to the SpiceyPy project. For questions or comments, please contact scartwright@nevada.unr.edu.

Lunar Surface Innovation Consortium

The purpose of the Lunar Surface Innovation Consortium (LSIC) is to harness the creativity, energy, and resources of the nation to help NASA keep the United States at the forefront of lunar exploration.

LSIC operates in collaboration with the NASA Space Technology Mission Directorate under the Lunar Surface Innovation Initiative (LSII). LSIC fosters communications and collaborations among academia, industry, and Government. Members have expertise in LSII key capability areas.

Recommendation - Tell Me a Story

Tell Me a Story is an American psychological thriller television anthology series created by Kevin Williamson for CBS All Access. Based on the Spanish television series Cuéntame un cuento, it depicts iconic fairy tales reimagined as modern-day thrillers. Each season features a mostly different cast ensemble, with Danielle Campbell and Paul Wesley appearing in both seasons of the series.

Watch on Paramount+:

https://www.paramountplus.com/shows/tell-me-a-story/

Chinese Fruits and Vegetables

My ma sometimes tells me about herbs and I have no idea how to translate them into English typically. This is to provide a quick guide in case I am asked again in the future.

Myrica rubra

Also called yangmei, (Chinese: 杨梅; pinyin: yángméi; Cantonese: yeung4 mui4; Shanghainese: [ɦiɐ̃².mɛ⁴]), yamamomo (Japanese: ヤマモモ) Chinese bayberry or Chinese strawberry and often mistranslated from Chinese as arbutus. It is a subtropical tree grown for its fruit.

https://en.m.wikipedia.org/wiki/Myrica_rubra 

Brassica juncea

Commonly called Chinese mustard, Indian mustard, leaf mustard, vegetable mustard, it is a species of mustard plant. In Chinese it is called 芥菜 (jiècài). One variation of it is called snow mustard (雪里红）.

https://en.m.wikipedia.org/wiki/Brassica_juncea

Cooking - Desserts

I have a sweet tooth but I am not very well-acquainted with the names of things. Here I keep track of all the delicious sweets out there in a list that I can refer to. This is delicious research. Now someone has to make all of it for me or I have to go places to try them all!

Boston Cream doughnut

The Boston cream (pie) doughnut or donut is a round, solid, yeast-risen doughnut with chocolate frosting and a custard filling, resulting in a doughnut reminiscent of a miniature Boston cream pie.

The doughnut was made out of inspiration from the Boston cream pie which was, in turn, created by chef M. Sanzian at Boston's Parker House Hotel in 1856. The cake consists of vanilla-flavored custard sandwiched between two-layers of sponge cake and topped with chocolate glaze and has been popular in Massachusetts since its creation. The doughnut adaptation of the pie is popular not only in Massachusetts but throughout the United States and Canada.

https://en.m.wikipedia.org/wiki/Boston_cream_doughnut