astronomy

Uppsala–DLR Trojan Survey

Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey rather than just read about it. In short: The Uppsala–DLR Trojan Survey (UDTS, also known as UAO–DLR Trojan Survey) is an astronomical survey to study the movements and locations of asteroids near Jupiter, which includes Jupiter trojans and other asteroids, which line-of sight are frequently blocked by the giant planet. The survey was carried out at the Uppsala Astronomical Observatory in Sweden, in collaboration with the German Aerospace Center (DLR).

Key takeaways

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

Reference excerpt

The Uppsala–DLR Trojan Survey (UDTS, also known as UAO–DLR Trojan Survey) is an astronomical survey to study the movements and locations of asteroids near Jupiter, which includes Jupiter trojans and other asteroids, which line-of sight are frequently blocked by the giant planet. The survey was carried out at the Uppsala Astronomical Observatory in Sweden, in collaboration with the German Aerospace Center (DLR). Principal investigators were the astronomers Claes-Ingvar Lagerkvist, Gerhard Hahn, Stefano Mottola, Magnus Lundström and Uri Carsenty. The Uppsala–DLR Trojan Survey, UDTS, should not be confused with its successor, the Uppsala-DLR Asteroid Survey (UDAS), which started shortly after the UDTS concluded. During the course of the survey, two telescopes were used at ESO's La Silla site in northern Chile. In fall of 1996, the ESO Schmidt telescope surveyed approximately 900 deg2 at Jupiter's L4 Lagrangian point, location of the so-called Greek camp. Additional positions and magnitudes of asteroids were obtained using the (now decommissioned) 0.61-meter Bochum telescope. There is some notable controversy over P/1997 T3, one of the objects found in this survey, namely an asteroid-like object with a comet-like tail. It is thought that this tail is composed of dust, due to its consistent appearance, and the fact that it is pointing towards the Sun, not away from it. The group of Jupiter trojan contains about 6,000 asteroid. They are named after figures from Greek mythology, typically after the heroes of the Trojan War as narrated in Homer's Iliad.

List of discovered minor planets The Minor Planet Center credits the Uppsala–DLR Trojan Survey with the discovery of 62 numbered minor planets during 1996–1997.

See also List of asteroid-discovering observatories List of minor planet discoverers § Discovering dedicated institutions Uppsala–ESO Survey of Asteroids and Comets, UESAC

References

External links Comet or Asteroid? Trojans Archived 2008-05-11 at the Wayback Machine

Worked examples

Example 1 — a first encounter with Uppsala–DLR Trojan Survey

Start with the simplest possible case. Write down what Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey

In research: Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey 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: Uppsala–DLR Trojan Survey is common in secondary-school and first-year university syllabi. It links to neighbouring topics Asteroid surveys, Astronomical surveys, Discoveries by the Uppsala-DLR Trojan Survey, so understanding it makes those chapters shorter.
In everyday life: Look for Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Uppsala–DLR Trojan Survey in simple terms?

Why does Uppsala–DLR Trojan Survey 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 Uppsala–DLR Trojan Survey?

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 Uppsala–DLR Trojan Survey.