Posts Tagged ‘АСЗ’

2005 YU55 close flyby

Observation of 2005 YU55 at ISON-NM Observatory will be started on Nov. 09, 01:30 UT. Stay tuned!

2011 QY37 – a month after discovery, what’s in the future?

NASA / JPL

It has been a month since the discovery of our observatory’s second near-Earth asteroid, and during that month the precision of its orbit has significantly improved. On the basis of new data we can attempt a glimpse into the future.

So, asteroid 2011 QY37 came closest to the Earth on Sept. 24th, passing 0.7 a.u. from our planet. The asteroid is a rather large body and will be observable from our observatory until the beginning of next year. Thus, its observation arc has increased to 5 months.

The next close approach of asteroid 2011 QY37 will be more favorable; in November of 2015 it will pass 0.4 a.u. from Earth, achieving a maximum brightness of magnitude 18.4. At that apparition, we will be able to observe the asteroid for half a year. The next time 2011 QY37 comes close to the Earth at the end of November 2019, it will reach mag. 17.6! It will pass at an absolutely safe distance of 0.3 a.u. This approach will be the closest for this asteroid in the near future. In 2024 it will pass 0.68 a.u. from the Earth with a maximum brightness of mag. 19.3.

At the beginning of 2012 we will increase the precision of the asteroid’s orbit, and we will return again to the analysis of future approaches of this harmless celestial body. Remember, the next close approach of another near-Earth asteroid discovered at our observatory – 2010 RN80, will take place in 2037!

The ISON-NM observatory’s second near-earth asteroid

Pearson Prentice Hall, Inc.

August 27th at the ISON-NM Observatory, a new, second near-Earth asteroid was discovered, receiving the designation 2011 QY37. The object belongs to the Amor family and presents no hazard to the Earth. The minimum distance of its orbit to Earth’s is more than 39 million kilometers. The asteroid orbits on a rather extended orbit (eccentricity 0.51), with a period of 3.91 years.

Closest approach to the Earth will happen Sept 25th, when asteroid 2011 QY 37 passes 0.7 a.u. from our planet (104.7 million km). The next few years will be favorable for observing this object. In November 2015 it will reach 18th magnitude at a distance of 0.31 a.u. In January 2020, 2011 QY37 will be a little farther with a brightness of magnitude 18.5.

Although this is a preliminary prediction, the accuracy of the orbit will improve. We will be able to observe this object until the beginning of the next year. After that we will certainly return to this asteroid again.

Remember, our first near-Earth asteroid was discovered Sept. 10, 2010 and received the designation 2010 RN80. In addition, another near-Earth object is a second comet – P/2011 NO1, discovered at the ISON-NM Observatory in July of this year.

The new near-Sun asteroid

NASA / JPL

Spanish sky survey La Sagra discovered a new object with temporary designation 15LB160. This asteroid is likely to be classified as potentially hazardous (PHA), the minimum distance of the intersection of its orbit with the orbit of Earth is 0.044 AU, body diameter about 450 meters. The object has not yet obtain an official designation, but has already been confirmed by many observatories, including our own. It is quite possible that this asteroid will be in top ten near-Earth asteroids with the smallest distance of the perihelion passage q ~ 0.1 AU!

P.S. Asteroid was designated as 2011 KE.

“Blinking” asteroid passes the Earth

This interesting near-Earth asteroid was discovered by the Spanish La Carpa survey on April 8th, receiving the designation 2011 GP59. Several hours after the discovery of the object, one of its discoverers, Jaime Nomen reported that the object noticeably varied in brightness with an amplitude of more than two magnitudes! This is very significant; most asteroids, due to their rotation, vary in brightness by tenths of a magnitude.

Lowell observatory / Brian Skiff

Many asteroid observers have observed this new guest, and we have received precise photometric curves (graphs of the change in brightness with time). One of the astronomers was Brian Skiff, working at Lowell Observatory. You can see the graph at left.

The period of rotation of asteroid 2011 GP59 is just 7.5 minutes, although this is far from the fastest rotating asteroid. The record belongs to asteroid 2010 TD54; it makes a full rotation on its axis in just 42 seconds!

Above, you can easily see how asteroid 2011 GP59 “blinks”. This animation was made by Nick James using his 28-cm telescope. At the time of the image, the asteroid was located 3,356,000 km from Earth – 1.4 times the average distance from the Earth to the Moon. Its closest distance to the Moon on this passage was 2.3 times less than that- just 236,000 km. The next time this asteroid passes by the Earth will be April 9, 2028.
July 2019
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