Harvard University
| Use attributes for filter ! | |
| Address | Massachusetts Hall, Cambridge, MA 02138, United States |
|---|---|
| Phone | +1 617-495-1000 |
| Undergraduate enrollment | 7,447 (2016–17) |
| Splinter num students | about students |
| Splinter salary | about outcomes |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2280531 |
About Harvard University
Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States.
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Has found an other interstellar visitors?
Work of art: The Comet has a very eccentric orbit
An amateur astronomer has discovered a comet that could, from outside our Solar System .
If so, it would be the second inter-stellar Object after the elongated body is known, has been identified as a 'Oumuamua, in the year 2017.
The Minor Planet Center (MPC) at Harvard University
The Body is a "hyperbolic" orbit, which would seem to indicate, whose origin is in another planetary system.
A hyperbolic orbit is an eccentric, where The Shape deviates significantly from a Perfect Circle .
A Perfect Circle has an eccentricity of 0. The elliptical orbit of many planets, asteroids and comets, the eccentricities between 0 and 1 have Railways.
The newly discovered Object - first of all, the name gb00234, but now known as The Comet C/2019 Q4 (Borisov ) - has an eccentricity of 3. 2, based on the current observations.
It was noticed by the amateur astronomer Gennady Borisov on August 30 at the Crimean Observatory in Bakhchysarai. At the time, about three astronomical units (450 million km) from The Sun .
'Oumuamua, discovered in the 19th century. October 2017, was initially classified as a comet, based on its hyperbolic orbit. But further observations detected no signs of a coma, the fuzzy envelope around The Nucleus of The Comet . C/2019 Q4 (Borisov ), on The Other hand, is clearly an active comet, with a visible coma and tail.
in contrast to the small, weak 'Oumuamua, the new Object seems to be very large - approximately 20 km wide and bright.
In addition, 'Oumuamua was also spotted that you had after its closest approach to The Sun (perihelion), so it was not visible long enough for astronomers to answer the many questions. C/2019 Q4 (Borisov ), meanwhile, is still our sun is approaching the system and will not reach perihelion until 10 December.
The Minor Planet Center announcement to make to the astronomers follow-up observations. According to the MPC, "absent an unexpected fade or disintegration, [C/2019 Q4] should be visible for at least a year".
This would be for an observer is an exciting opportunity to shape the properties of an Object that could be created around a Distant Star .
astrophysicist: "in contrast to" Oumuamua, the asteroids-or comets-nature is still debated, this is definitely a comet.
"If it is clearly interstellar, it will be fascinating to see how its composition (spectral properties) in comparison to the variety that we see in comets from our Solar System . "
astrophysicist Simon Porter, from the Southwest Research Institute (SwRI) in San Antonio , Texas, has been who of the tracked Object , "With such a bright coma, we should be able to get beautiful spectra of Q4 and, hopefully, measure isotope ratios. "
isotopes are different forms of the same chemical element. He added that the conditions could be different from those of the "locals" of The Comet .
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astronomy, comets
Source of news: bbc.com