Wednesday , January 29 2020
Home / argentina / Your guide to the best meteorological dances of 2019 – Technology

Your guide to the best meteorological dances of 2019 – Technology



Posted

January 01, 2019 06:00:20

The year begins with a beautiful with the Quadrantids, the first of the annual major three meteoric dances. Active during the month new, Northern Hemisphere observers give a show to enjoy in & # 39; the cold nights of & # 39; e winter. Thus, the dance is not visible from southern air.

The other two members of the big three – the Persians and the Commonwealth – have not been so happy this year, set with light and limited the spectacle.

So, with that in mind, where and when should you get the best of & # 39; to view meteorological offers of 2019? Here we talk about proposing the high values ​​for this year – the dances mostly pose problems on a good performance.

Things to keep

We give details of the full period for active period for each shower, and the forecast time of maximum. We're giving you the reason you give it the best view and the theoretical peak rates it shows under ideally-observing conditions – a number known as the Zenithal Hourly Rate, or ZHR.

It is important to note that the ZHR is the theoretical maximum number of meteors you expect to see an hour for a given noose, unless it catches us by surprise with an unexpected outbreak!

In reality, the rates that you observe will be less than the ZHR – but the clearer and more expensive your skype will be, and the higher the dances in heaven, the closer you come to this ideal value.

For each shower, to view the best rates, it is worth trying to find a good dark side (the dancer better) – far from streets and other light lines.

If you are outside, give your eyes a lot of time to adjust to dark – half hour should do the trick.

These can only be seen by one hemisphere or the other are indicated by [N] or [S], while some are & quot; global & quot; are marked as [N/S].

You can download and add this icsfile to your calendar to stay in & # 39; not stay as when & # 39; t found the meteorites.

Quadrant times [N]

Active: December 28 to January 12

Maximum: January 4, 2:20 o'clock (2:20 o'clock, 3:20 o'clock)

ZHR: 120 (variant, can reach ~ 200)

Parent: It is complicated (comet 96P / Macholz and asteroid 2003 EH1)

In spite of being one of the three most recent dance days from & # 39; a year the quadrant times are often left and under observed. This is probably the result of their peak falling into & # 39; depths of & # 39; a northern hemisphere winter, when it is often less than ideal for meteorological turbulence.

For most of the night, they are active, quadrant times are very low (less than five per hour). The peak itself is very short and sharp, far more than for the other important dance years. As a result, rates are a quarter of the maximum ZHR over a period of just eight hours, centrally at peak time.

The quadrantide beam lies in the northern constellation of Boötes, the Herdsman, and is circumpolar (never set) for observer poles of 40 degrees north. As a result, observers in northern Europe and Canada see quadrant times at night. The climate is highest in heaven (and rates are the best) in & # 39; hours after midnight.

For this reason, this peak (annually 2:20 hours) is most successful for northern Europe judgments – and given that picking rates can reach 100 hours, it is certain that the alarm will fall into & # 39; a cold foreign hours, and see the spectacle.

Alpha Centaurids [S]

Active: January 31st through February 20th

Maximum: February 8, 1.00 o'clock UT (WA: February 8, 9pm; QLD: February 8, 11pm; NSW / ACT / Vic / Tas: February 9, 12am)

ZHR: Variable; typically 6, but can be more than 25

Parent: Unknown

The Alpha Centaurids are a small meteor shower, which typically make rates of just a few meteors per hour. But they are known as the source of spectacular fireballs for southern heirlooms and so are worth keeping in the southern summer clouds.

Alpha Centaurids are fast meteors, and are often bright. As with most dances that are only visible from the southern hemisphere, they continue to study poorly. Although a typical delivery value delivered, several broadcasts were made in which the tariffs reached or were reached as hours.

The dancing climate is close to the light star Alpha Centauri – the closest star to the Solar System and the third brightest star in the night sky.

Alpha Centauri is just 30 degrees from the southern horse. As a result, the climate does not in any case represent observers on Australia. The best rates are seen from & # 39; the late evening, as the street goes higher & # 39; a southern sky.

This year's peak is comprised of one of the Alpha Centaurids in conjunction with the New Moon, making it an ideal time to check out these small but fascinating showers.

Eta Aquariids [S preferred]

Active: April 19 to May 28

Maximum: May 6, 2pm UT (WA: May 6, 10pm; QLD / NSW / ACT / Vic / Bag May 7, 12am)

ZHR: 40+

Parent: Comet 1P / Halley

The Staa Aquariids may have been wounded the year, especially for judges on the southern hay fever. The first of two annual dances created by Comet 1P / Halley, make the Eta Aquariids an excellent week-long peak rate.

The climate is running in & # 39; starting hours of & # 39; e morning, after performance maximum time, and the best rates are seen as the sky begins to rise with the light of & dawn. It may well be that they stop observing them first, if rates can be as high as 40 to 50 meters in the hour before the lifting sky disappears.

Eta Aquariide meteors are fast and often clear, and the shower regularly gives those who come to terms. Spectacular meteoric meteors that hit "one side" of & # 39; the sky on the other side may be shortly & # 39; t be seen when the dying comes across the horizon.

This year, the conditions are ideal for observing the shower, with New Moon falling on May 4, but two days before the proposal maximum. As a result, the whole week at & quot; peak will be appropriate for breakfast on & # 39; Sessions, which give enough observations to see the fall of small fragments of the most famous comets.

Southern Partial Varieties, Piscis Austrinides and Alpha Capricornids [N/S; S favoured]

Active: Early July to mid-August

Maximum: 28 – 30 July

Combined ZHR: 35

Parent: Comet 96P / Macholz (Southern Delta Aquariides); Unknown (Piscis Austriniden); Comet 169P / NEAT (Alpha Capricornids)

In & nbsp; in most of the years, the approach of August is renamed by sharp observers like setting up & # 39; e Persians – the second of & # 39; the big three dancer years. This year sees moonlight, they deceive for most guidance.

But this cloud comes with a silver lining. A forty-year or so before peaking at the Persians, three relatively small dances meet to commemorate an all-encompassing mid-winter show for southern heights. This year, the month is perfect for letting her observe.

These three dances – the Southern Delta aquariums, Alpha Capricornids and Fisherman's Aids – add observers to the southern hillsides, although they can also be judged from northern latitudes.

According to your location, the best rates for these dances are shown in the hours after midnight. Repayable rates are starting to appear for southern security depositors already at 10pm local time.

The Southern Delta Aquarids are the most active of three, those up to 25 rapidly influenced, light meteorites at their peak, which join the five days on July 30.

The Alpha Capricornids, among them, make lower rates that typically contribute to just 5 meteors in one hour. But where the Southern Delta Aquarids are fast, the Alpha Capricornids are very slow meteors and are often spectacular.

Like the Alpha Centaurids, in February, they have a reputation for making huge numbers of spectacular fireballs. These tend to create meteors that are both very clear when they also make slow motion that they are an excellent target for astrophotographers, and also necklaces.

Taurids [N/S]

Active: September 10 to December 10

Maximum: October 10 (South Taurids); November 13 (Northern Taurids)

ZHR: 5 + 5

Parent: Comet 2P / Encke

The Taurids are probably the most fascinating of all yearly meteorites. Although they only lose relatively small rates (about five per hour each of two streams, north and south), they do so over an immensely long period – three full months of activity.

In other words, the Earth deserves a fourth of a year to flow through the Taurid. In & # 39; we know the stream again in June, as the meteors from & # 39; a door is lost by only visible in one day.

So, a third of our planet's orbit is being transformed into a broad stream of pike, which it has won as the Taurid stream. In total, the Taurid stream combines more mass of meteoric material with our planet than any other meteorite reader.

So great is the Taurid stream that there is speculation that it originated with the catacomcic dissolution of a super comet, thousands or tens of thousands of years in the past, and that the current shower is a relic of that old event.

Tauride meteors are slow, and are often spectacularly bright. Like the Alpha Capricornids, they have a reputation for regular fireballs, which makes them another good cause for the thriving astrophotography photographer.

Although, a few, sharp points, Taurid activity remains, or near, the best part of a month, between maxima of northern and southern currents, meaning that is always possible to find that Monday does not stop to observe the dance.

Geminids [N/S]

Active: December 4 to December 17

Maximum: December 14, 6:40 o'clock UT (QLD: December 15, 4:40 o'clock; NSW / ACT / Vic / Tas: December 15, 5:40 o'clock)

ZHR: 140+

Parent: Asteroid 3200 Phaethon

Another of the great three yearly meteoric dances, the Commonwealth is probably the best, with top rates in & # 39; Over the past several years, over 140 meteors have been installed in & hour.

The minds are visible from both heelspyren – although the street is primarily aimed at northern babies. Even in the south of Australia, the street is well before midnight, and every observer gives the rest of & # 39; a night to enjoy the spectacle.

Mouthlight will be serious about this in the years, with the dolly of the dance, the execution of the fainter meteors, with the result that judged numbers become lower than the ZHR can say otherwise.

However, the expensive regulators regulate regularly light meteors, and provide such high rates that it is still well-controlled, even by the luster of a full month.

Urtid [N]

Active: December 17 no December 26

Maximum: December 23, 3.00 hours

ZHR: 10+

Parent: Comet 8P / Tuttle

The last shower of the year – the Uriden – is a preservation for only national national observers. Many as the fool that started our journey through the year, the quadrant times, the Urids kept low, often lost at the weak mid-winter plans that many northern slats.

But if the hills are clear, the sides are visible at night, for their light age just 12 degrees from & # 39; a northern celestial pole. As such, they make a reported goal for observations to check in the evening, even if the climate is at & # 39; the highest is in early morning.

Most of the years, the Uriden is a relatively smaller shower, with rare things about ten meteors per hour. They have encountered a number of surprises in the past century, with occasional fast-meteoric testimonials running down to more than one hundred meteors per hour.

Although no such proposal was made for 2019, the Uriden has proven to be a surprise with a surprise or two left, and this may just be an exciting way to end the meteoric year.

Jonti Horner is a professor of astrophysics at the University of Southern Queensland and Tanya Hill is a parent of & # 39; a University of Melbourne and senior curator (astronomy) in Museums Victoria. This piece first appeared on The Conversation.

Topics:

astronomy space,

die,

telescopes,

planets and asteroids,

Australia


Source link