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Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars

 
Rain-Man
User ID: 35512961
03/03/2013 07:49 PM
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Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars
[link to transientsky.files.wordpress.com]

Observation
arc
(in days)
Minimum
distance
(AU)
Nominal
distance
(AU)
Maximum
distance
(AU)

44 0 0.0059 0.024
58 0 0.0025 0.012
74 0 0.00070 0.0079
148 0 0.00035 0.0021

[link to en.wikipedia.org]

[link to ssd.jpl.nasa.gov]

Since C/2013 A1 is a hyperbolic comet and moves in a retrograde orbit, its velocity with respect to the planet will be very high, approximately 56 km/s. With the current estimate of the absolute magnitude of the nucleus M2 = 10.3, which might indicate the diameter from 10 to 50 km, the energy of impact might reach the equivalent of staggering 2×10¹º megatonnes! This kind of event can leave a crater 500 km across and 2 km deep.

[link to spaceobs.org]
Rain-Man
User ID: 35609438
Bosnia and Herzegovina
03/05/2013 07:11 AM
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Re: Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars
Here is some of scars on Mars ..

[link to download.esa.int]

[link to www.bibliotecapleyades.net]

[link to www.transcend.ws]
Rain-Man
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Bosnia and Herzegovina
03/05/2013 07:14 AM
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Re: Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars
PhilippinoBob

User ID: 16604126
Philippines
03/05/2013 07:28 AM
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Re: Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars
Super Nova effect if it hits!
PhilippinoBob
Anonymous Coward
User ID: 35393780
03/05/2013 07:45 AM
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Re: Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars
Super Nova effect if it hits!
 Quoting: PhilippinoBob


Even worse, because Mars is so close to Earth such amount of energy will radiate through the vacuum of space, the observed light will be enough to burn those unfortunate to be standing outside on the mars-facing side of the Earth.
Rain-Man
User ID: 35624108
03/05/2013 12:04 PM
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Re: Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars
Comet C/2013 A1 May Smash Into Mars In 2014, Astronomers Say

New Comet's Potential Mars Collision in 2014 Explained

A newfound comet is apparently on course to have an exceedingly close call with the planet Mars in October 2014, and there is a chance — albeit small — that the comet may even collide with the Red Planet.

When it was discovered, Comet Siding Spring was 669 million miles (1.07 billion kilometers) from the sun. Based on its orbital eccentricity, it is apparently a new or "virgin" comet, traveling in a parabolic orbit and making its very first visit to the vicinity of the sun. It is expected to pass closest to the sun (called perihelion) on Oct. 25, 2014 at a distance of 130 million miles (209 million km).

But, less than a week earlier, on Oct. 19, 2014, the comet — whose nucleus is estimated to be anywhere from 5 to 30 miles (8 to 50 km) in diameter — is projected to cross the orbit of Mars and pass very close to that planet. Preliminary calculations suggest that nominally at closest approach, Comet Siding Spring will come to within 63,000 miles (101,000 km) of Mars.


However, because the comet is currently very far out in space and has been under scrutiny for less than three months, the circumstances of its orbit will likely need to be refined in the coming weeks and months. As such, the comet's approach to Mars might ultimately end up being farther or closer than what current predictions suggest. In fact, last Wednesday (Feb. 27) observations made by Leonid Elenin, a reputable Russian astronomer who works at the Keldysh Institute of Applied Mathematics,suggested that the comet could pass even closer — just 25,700 miles (41,300 km) from the center of Mars.

According to Elenin: "On the 19th October 2014, the comet might reach apparent magnitude of -8 to -8.5, as seen from Mars!” (This would make the comet 15 to 25 times brighter than Venus). "Perhaps it will be possible to acquire high-resolution images from the Mars Reconnaissance Orbiter (MRO)," he added.collide with the Red Planet.

[link to www.space.com]
Rain-Man
User ID: 35624108
03/05/2013 12:09 PM
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Re: Comet C/2013 A1 (Siding Spring), New Data Closer Flyby to Mars
Comet Lemmon-C/2012 F6 Follows Comet PanSTARRS - C/2011 L4

Two impressive comets will both reach their peak brightness during the next two weeks, also very nice image catch ..

[link to apod.nasa.gov]

[link to asterisk.apod.com]

Comet C/2012 F6 Lemmon And C/2011 L4 PANSTARRS
Taken by Michael Mattiazzo on January 5, 2013 @ Swan Hill, Victoria ..

[link to spaceweather.com]


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