se leggi bene e cerchi informazioni vedrai che è stata notata si poteva vedere con un telescopio di dimensioni ridotte
non è passata a 2m dalla Terra..
Discovered by the Near Earth Asteroid Tracking team (NEAT) in 2002, comet 2002 V1 never reached naked eye visibility but was easily seen in amateur size telescopes. This image was taken February 2, 2003 as the comet approached the sun. As flags on poles always wave in the direction of the prevailing wind, so do the tails of comets. The sun emits a solar wind that causes the tail to blow away from the sun. When the comet is traveling away from the sun, the comet actually chases its tail.
What make Near Earth Objects or NEO’s (asteroids and comets) so dangerous are not only their size but also their velocity. Imagine yourself walking on the side of a freeway and a car passes you at 60 to 210 miles per hour. That’s the relative velocity between the fastest bullet on earth (1.2 kps) and a comet (20-70 kps). If any fragment of comet Shoemaker-Levy 9, which hit Jupiter in 1994, had strayed off course and struck the earth, there would only be fragments left of either.
12 Feb 2003
Only the most dedicated of sky watchers will have seen the latest comet, called C/2002 V1 (NEAT). It has hovered near the limits of naked-eye visibility in the evening sky since January 2003. However, you would need a pair of binoculars, pointed in exactly the right direction, to see anything. Log onto the Internet instead, and let the ESA/NASA space probe SOHO show you more about this comet than you would usually see. …
The comet was discovered by NASA's Near Earth Asteroid Tracking programme (NEAT). At that time, it was 25 000 times fainter than the human eye can perceive. Initially, the comet became so bright that astronomers wondered whether they would be able to see it during the day, as it rounded the Sun.
During January 2003, the comet failed to brighten as hoped. Now, it is expected to disappear from view to Earth-bound observers about 11 February 2003, as it heads towards the Sun for its closest approach on 18 February 2003. It will not be lost from all sight, however, as in space, SOHO will be watching. Astronomers expect C/2002 V1 (NEAT) to pass into LASCO instrument's field of view, early on 16 February and stay there until 20 February.
It will pass by the Sun at less than a tenth of the distance between the Earth and the Sun. There is a small chance that the Sun's gravitational field could pull it to pieces. “Even if that doesn't happen, the fly-by itself should be impressive enough,” says Bernhard Fleck, SOHO Project Scientist.
ARCO DI CERCHIO – Col passare delle ore, vedremo la Neat spostarsi a destra rispetto al Sole, compiendo un ampio arco di cerchio. Il 18 febbraio la cometa raggiunger� il perielio, passando a circa 15 milioni di km di distanza, cio� a un decimo rispetto alla distanza media della Terra dal Sole.
ORIZZONTE – Coloro che abitano in localit� lontane dallo smog e dalle lucicittadine l'hanno potuta osservare a Ovest, dopo la calata del Sole sotto l'orizzonte, fra i bagliori rossastri del tramonto. Gli appassionati dotati di telescopi con cui si possono effettuare fotografie a lunga posa hanno potuto raccogliere delle immagini spettacolari. Lo strano nome dato alla cometa deriva dal programma di ricerca internazionale Neat (iniziali di Near Earth Asteroid Tracking), finalizzato allo studio delle orbite degli asteroidi, quei macigni cosmici che potrebbero cadere sulla Terra.