astronomy

Pelageya Shajn

Pelageya Shajn is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Pelageya Shajn rather than just read about it. In short: Pelageya Fedorovna Shajn, née Sannikova (Пелагея Фёдоровна Шайн) (22 September 1894 – 27 August 1956), was a Russian astronomer in the Soviet Union, and the first woman credited with the discovery of a minor planet, at the Simeiz Observatory in 1928. Pelageya also discovered numerous variable stars and co-discovered the periodic, Jupiter-family comet 61P/Shajn–Schaldach.

Key takeaways

Pelageya Shajn belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Pelageya Shajn to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Pelageya Shajn from memory before moving on to harder problems.

Reference excerpt

Pelageya Fedorovna Shajn, née Sannikova (Пелагея Фёдоровна Шайн) (22 September 1894 – 27 August 1956), was a Russian astronomer in the Soviet Union, and the first woman credited with the discovery of a minor planet, at the Simeiz Observatory in 1928. Pelageya also discovered numerous variable stars and co-discovered the periodic, Jupiter-family comet 61P/Shajn–Schaldach. She was married to prominent Soviet astronomer Grigory Shajn.

Biography Pelageya Shajn was born in 1894 to a peasant family in the village Ostanin located in the Solikamsky District of the Perm Governorate. She was the wife of prominent Soviet astronomer Grigory Shajn, who was also her colleague at the Simeiz Observatory. Her maiden name was Sannikova (Санникова). In 1928, she discovered the asteroid 1112 Polonia, the first minor planet to be discovered by a woman. She died 27 August 1956, shortly after her husband had died on 4 August the same year.

Awards and honors Main-belt asteroid 1190 Pelagia, discovered in 1930 by Grigory Neujmin who worked at Simeiz, was named in her honor. In addition the asteroid 1648 Shajna was named in her and her husband's memory, while the lunar crater Shayn was exclusively named after her husband.

Discoveries Her astronomical discoveries are credited under the name P. F. Shajn. As with her husband, her last name, "Shajn", is sometimes given as "Schajn", "Shain" or "Shayn", the latter being the modern English transliteration. Pelageya Shajn discovered 19 minor planets (see list below) and about 140 variable stars. In 1949, she also co-discovered 61P/Shajn–Schaldach, a periodic comet of the Jupiter family. However, the non-periodic comet C/1925 F1 (Shajn-Comas Solá; also known as Comet 1925 VI or Comet 1925a) was co-discovered by her husband rather than by her.

List of discovered minor planets

See also List of minor planet discoverers § P. F. Shajn

References

Further reading Мишланова Л. Самостоянье (Mishlanova L. Samostoyaniya): "Очерки о людях науки и культуры Пермского края. Пермь" (Essays of men on science and culture of Perm Krai). Пушка, 2006. 320 с.: ил., Из содерж.: Планета Пелагея (Planet Pelagia). С. 27-33.: фот.

Worked examples

Example 1 — a first encounter with Pelageya Shajn

Start with the simplest possible case. Write down what Pelageya Shajn claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Pelageya Shajn before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Pelageya Shajn ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Pelageya Shajn

In research: Pelageya Shajn appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Pelageya Shajn in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Pelageya Shajn is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1894 births, 1956 deaths, Discoverers of asteroids, so understanding it makes those chapters shorter.
In everyday life: Look for Pelageya Shajn outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Pelageya Shajn in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Pelageya Shajn means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Pelageya Shajn out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pelageya Shajn in simple terms?

Why does Pelageya Shajn matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Pelageya Shajn?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Pelageya Shajn.