chemistry

Junk Bond Observatory

Junk Bond Observatory is a chemistry 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 Junk Bond Observatory rather than just read about it. In short: The Junk Bond Observatory (JBO; code: 701) is located in the Sonoran Desert at Sierra Vista, Arizona, United States. It was established by amateur astronomer David Healy in his backyard in 1996, using a Celestron 14 SCT and a 16-inch Meade LX200 telescopes in a roll-off shelter.

Key takeaways

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

Reference excerpt

The Junk Bond Observatory (JBO; code: 701) is located in the Sonoran Desert at Sierra Vista, Arizona, United States. It was established by amateur astronomer David Healy in his backyard in 1996, using a Celestron 14 SCT and a 16-inch Meade LX200 telescopes in a roll-off shelter. In 2000, a 20" Ritchey-Chretien was installed, to be replaced by a 32" Ritchey in 2004. Asteroid searches began in 1998 using a local computer network and search software. The first discovery at the observatory was made by Jeff Medkeff in June 1999. It was named 38203 Sanner after Glen Sanner also a member of the Huachuca Astronomy Club. As of November 2016, a total of 272 numbered minor planets have been discovered at the observatory, using a 32-inch telescope. The Minor Planet Center credits 219 of these discoveries to David Healy and/or Jeff Medkeff. The discovery of the remaining 53 numbered minor planets is credited directly to the observatory (see list below). Until his death in 2011, David Healy was a frequent contributor of follow-up observations to objects on the Minor Planet Center's Near-Earth Object Confirmation Page, surveyed for asteroids netting approximately four new discoveries per month as of January 2007, performed discovery and confirmation photometry of extrasolar planet transits, and performed photometry of cataclysmic variable stars and active galactic nuclei. The telescope operated robotically, unattended for most of the night, controlled by software by Bob Denny and Jeff Medkeff. JBO was dismantled in August 2021. The telescope, dome, and other equipment were purchased by a private buyer.

List of discovered minor planets The Minor Planet Center directly credits the Junk Bond Observatory with the discovery of 53 numbered minor planets during 2000–2005.

See also List of asteroid-discovering observatories List of astronomical observatories List of minor planet discoverers § Discovering dedicated institutions List of observatory codes

References

External links Quick Tour of Junk Bond Observatory on YouTube (time 9:59 min.) Junk Bond Observatory Spectrashift The NEO Confirmation Page, Minor Planet Center

Worked examples

Example 1 — a first encounter with Junk Bond Observatory

Start with the simplest possible case. Write down what Junk Bond Observatory claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Junk Bond Observatory 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 Junk Bond Observatory 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 Junk Bond Observatory

In research: Junk Bond Observatory appears in chemistry 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 Junk Bond Observatory 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: Junk Bond Observatory is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical observatories in Arizona, Minor-planet discovering observatories, Sierra Vista, Arizona, so understanding it makes those chapters shorter.
In everyday life: Look for Junk Bond Observatory 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 Junk Bond Observatory in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Junk Bond Observatory 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 Junk Bond Observatory out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Junk Bond Observatory in simple terms?

Why does Junk Bond Observatory matter?

Because it connects several chemistry 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 Junk Bond Observatory?

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 Junk Bond Observatory.