Shadow Of 11th Planet Passes Over Earth, Astronomers Observe Makemake, Frigid World Reveals Its Secrets For First Time
Astronomers have used three telescopes at ESO’s observatories in Chile to observe the dwarf planet Makemake as it drifted in front of a distant star and blocked its light. The new observations have allowed them to check for the first time whether Makemake is surrounded by an atmosphere. This chilly world has an orbit lying in the outer Solar System and was expected to have an atmosphere like Pluto (eso0908), but this is now shown not to be the case. The scientists also measured Makemake’s density for the first time. The new results are to be published in the 22 November issue of the journal Nature.
Credit: ESO/L. Calçada/Nick Risinger (skysurvey.org)
Dwarf planet Makemake [1] is about two thirds of the size of Pluto, and travels around the Sun in a distant path that lies beyond that of Pluto but closer to the Sun than Eris, the most massive known dwarf planet in the Solar System (eso1142). Previous observations of chilly Makemake have shown it to be similar to its fellow dwarf planets, leading some astronomers to expect its atmosphere, if present, to be similar to that of Pluto. However, the new study now shows that, like Eris, Makemake is not surrounded by a significant atmosphere.
The team, led by José Luis Ortiz (Instituto de Astrofísica de Andalucía, CSIC, Spain), combined multiple observations using three telescopes at ESO’s La Silla and Paranal observing sites in Chile — the Very Large Telescope (VLT), New Technology Telescope (NTT), and TRAPPIST (TRAnsiting Planets and PlanetesImals Small Telescope) — with data from other small telescopes in South America [2], to look at Makemake as it passed in front of a distant star [3].
“As Makemake passed in front of the star and blocked it out, the star disappeared and reappeared very abruptly, rather than fading and brightening gradually. This means that the little dwarf planet has no significant atmosphere,” says José Luis Ortiz. “It was thought that Makemake had a good chance of having developed an atmosphere — that it has no sign of one at all shows just how much we have yet to learn about these mysterious bodies. Finding out about Makemake’s properties for the first time is a big step forward in our study of the select club of icy dwarf planets.”
This animation shows the path of the shadow of the dwarf planet Makemake during an occultation of a faint star in April 2011. Several sites in South America saw the star briefly disappear as its light was blocked by Makemake. This dwarf planet is about two thirds of the size of Pluto, and travels around the Sun in a distant path that lies beyond that of Pluto, but closer to the Sun than Eris, the most massive known dwarf planet in the Solar System. Makemake was expected to have an atmosphere like Pluto, but the new occultation data shows that this is not the case. Note: the actual shape of the shadow on Earth will not be exactly round as shown here. This video is to illustrate the phenomenon.
Credit: ESO/L. Calçada
Makemake’s lack of moons and its great distance from us make it difficult to study [4], and what little we do know about the body is only approximate. The team’s new observations add much more detail to our view of Makemake — determining its size more accurately, putting constraints on a possible atmosphere and estimating the dwarf planet’s density for the first time. They have also allowed the astronomers to measure how much of the Sun’s light Makemake’s surface reflects — its albedo [5]. Makemake’s albedo, at about 0.77, is comparable to that of dirty snow, higher than that of Pluto, but lower than that of Eris.
It was only possible to observe Makemake in such detail because it passed in front of a star — an event known as a stellar occultation. These rare opportunities are allowing astronomers for the first time to find out a great deal about the sometimes tenuous and delicate atmospheres around these distant, but important, members of the Solar System, and providing very accurate information about their other properties.
Credit: ESO/L. Calçada
Occultations are particularly uncommon in the case of Makemake, because it moves in an area of the sky with relatively few stars. Accurately predicting and detecting these rare events is extremely difficult and the successful observation by a coordinated observing team, scattered at many sites across South America, ranks as a major achievement.
“Pluto, Eris and Makemake are among the larger examples of the numerous icy bodies orbiting far away from our Sun,” says José Luis Ortiz. “Our new observations have greatly improved our knowledge of one of the biggest, Makemake — we will be able to use this information as we explore the intriguing objects in this region of space further.”
Notes
[1] Makemake was initially known as 2005 FY9. It was discovered a few days after Easter in March 2005, earning it the informal nickname of Easterbunny. In July 2008 it was given the official name of Makemake. Makemake is the creator of humanity and god of fertility in the myths of the native people of Easter Island.
Makemake is one of five dwarf planets so far recognised by the International Astronomical Union. The others are Ceres, Pluto, Haumea and Eris. Further information about dwarf planets and planets is available from the International Astronomical Union.
[2] Another of the telescopes used in this observing campaign was an 0.84-metre telescope installed by the Católica del Norte University of Chile. This telescope is sited on Cerro Armazones, the future site of the European Extremely Large Telescope (E-ELT).
[3] Makemake passed in front of faint star NOMAD 1181-0235723 (where NOMAD refers to the Naval Observatory Merged Astrometric Dataset) on 23 April 2011. The team observed this event using seven different telescopes across Brazil and Chile. The event only lasted about one minute, so the astronomers took advantage of a specialised high-speed camera known as ULTRACAM (eso0520) and a high-speed infrared imager named ISAAC to capture the event.
[4] In the case of objects that are orbited by one or more moons the motions of the moons can be used to deduce the mass of the object. This was not possible in the case of Makemake.
[5] The dwarf planet was calculated to have a geometrical albedo of 0.77 ± 0.03, greater than Pluto’s, but smaller than that of Eris. An albedo of 1 represents a perfectly reflecting body, and 0 a black surface that does not reflect at all. The observations, together with previous results, indicate that Makemake has a density of 1.7 ± 0.3 grams per cubic centimetre, which in turn allowed the team to infer the shape and appearance of an oblate spheroid — a sphere flattened slightly at both poles — with axes of 1430 ± 9 kilometres and 1502 ± 45 kilometres. Makemake shows no global Pluto-like atmosphere at a level of one thousandth of that of Pluto’s atmosphere. However, it may have an atmosphere that only covers part of the surface. Such a local atmosphere, which is possible in theory, is not excluded by the observations.
More information
This research was presented in a paper “Albedo and atmospheric constraints of dwarf planet Makemake from a stellar occultation” to appear in the 22 November 2012 issue of the journal Nature.
The team is composed of J. L. Ortiz (Instituto de Astrofísica de Andalucía, CSIC, Spain), B. Sicardy (Observatoire de Paris; CNRS; Université Pierre et Marie Curie; Université Paris Diderot; Institut Universitaire de France), F. Braga-Ribas (Observatoire de Paris, CNRS, France; Observatório Nacional/MCTI, Brazil), A. Alvarez-Candal (European Southern Observatory, Chile; Instituto de Astrofísica de Andalucía, CSIC, Spain), E. Lellouch (Observatoire de Paris, CNRS, France), et al.
For the full list of authors and affiliations please refer to the Nature paper.
The year 2012 marks the 50th anniversary of the founding of the European Southern Observatory (ESO). ESO is the foremost intergovernmental astronomy organisation in Europe and the world’s most productive ground-based astronomical observatory by far. It is supported by 15 countries: Austria, Belgium, Brazil, the Czech Republic, Denmark, France, Finland, Germany, Italy, the Netherlands, Portugal, Spain, Sweden, Switzerland and the United Kingdom. ESO carries out an ambitious programme focused on the design, construction and operation of powerful ground-based observing facilities enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astronomical research.
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Are you makemaking this up. How do you get a shadow from a planet that is out farther than us from the sun?
The shadow is created by another star
The tea party has evidence that there are humanoid creatures living on this frozen rock. They have been told that these creatures are plotting to attack Earth on January 15, 2013. We are told that sherrif Apaiopa? has spoken to the white house appealing for federal aid to combat these monsters. Many with inside knowledge say that Obama is from the new found planet, and is using his presidency to help them. Rush and Sean are also involved, but it is unknown what planet they are from. The tea party has asked Glen Beck to get to the truth in this matter. According to those close to Beck say that he believes that mass suicide is our only hope. More to come. Jim
“News Alert” Glen Beck has been heard to say that the video shown above is proof of South American mind bending by the aliens. The Latinos have been brainwashed to help transfer our uzi’s to a spaceship in Texas. Jim
LMFAO Jim! That is hilarious! Great comments dude =)
This may be an acutal discovery but the words “11th planet” reveal what is really going on here.
There is another planet in the solar system, but it only comes around every 3,567 years: Planet X/Nibiru!
The Establishment is still coveirng up the existence of Planet X, so articles like this are put out to muddy the waters and confuse truth seekers.
People are noticing the earth changes and signs in the sky and realize something is up. But instead of the truth that it is Planet X causing almost everything going on now, people are expected to believe “global warming” hogwash or there is a planet but it is way, way out there stuff like this.
Yes, the earth IS heating from the inside out and it is due to the near presence of the magnetic bully Planet X, not “climate change” nonsense.
How come people cannot figure out that a few degrees at most rise in AIR temperature cannot explain sinkholes, earthquakes, fireballs, collapsing buildings and bridges, volcanic errutpions, extreme weather, etc., etc.? The Establishment does not want YOU to know the truth and lie all day along and distract with “11th planet” articles.
You will KNOW soon enough that Planet X is real because NASA is going to announce it!
Then we will all be talking about and discussing Planet X and not much else. Wiat, except for those who will still push the “global warming” crap rather than admit they were pushing disinfo and lies on YOU for years when they knew the truth, that it was Planet X all along!
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Have you seen this planet and not from online videos……no…..I thought so……if it,s there and going to hit us we would all see it without a telescope if not it would be travelling at about a billion miles an hour to hit us on doomsday.
“This just in” Reports from Salt Lake City, Utah described secret meetings going on at the Mormon temple. Earlier today we saw the arrival of Mitt Romney, Glen Beck, and Texas prisoner and poligamist Warren Jeff’s, all who were rushed from the airport to the temple. An informant that ask that his name not be revealed because he was not authorized to speak reports that they all were wearing prescription underwear. There are also reports of boy scouts going door to door collecting money and cool aide. NASA is monitoing the Hubble telescope for any signs of incoming spacecraft. We will keep you informed as this: incident develops.
Jim
. “The saddest news of all”. The saddest news about this article is that it is the most serious article on the site. Jim
To all of the above comments (excluding skipsart): You are in dire need of fundamental astronomy lessons. Please read a book.
Kudos to the poster for this great (and informative) article!
You might want to brush up on your editing a bit though.
I wonder how long before the conspiracy nuts will say this is Planet X or Nibiru unless they already have.
Me..and my shaaddooowwww…strolling down the coosssmmmooosss…All together now.
If they had better imaging, would they find the dwarf planet Makemake….
…full of elvish dwarves on it’s cold surface…busy make-making toys for good girls & boys?