Asteroid of 13th April 2029

It is supposed to pass the Earth in the evening at a distance of 58 000
km.
How much uncertainty about its orbit is left?

How bright is it? My approximate calculations show it should be visible
to naked eye, but perhaps not conspicuously brilliant. Any comments?

wrote in message
ups.com...
It is supposed to pass the Earth in the evening at a distance of 58 000
km.
How much uncertainty about its orbit is left?

How bright is it? My approximate calculations show it should be visible
to naked eye, but perhaps not conspicuously brilliant. Any comments?

Out of curiosity, once the mass was sighted and rated as getting
uncomfortably close, how many astrologers and prophets began predicting a
massive meteor strike on a vague timeline?

On Thu, 30 Dec 2004 11:12:11 -0600, "Everett Hickey"
wrote:

wrote in message
oups.com...
It is supposed to pass the Earth in the evening at a distance of 58 000
km.
How much uncertainty about its orbit is left?

How bright is it? My approximate calculations show it should be visible
to naked eye, but perhaps not conspicuously brilliant. Any comments?

Out of curiosity, once the mass was sighted and rated as getting
uncomfortably close, how many astrologers and prophets began predicting a
massive meteor strike on a vague timeline?



All of them.

--

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"You can't fool me, it's turtles all the way down."

On 30 Dec 2004 08:30:21 -0800, wrote:

It is supposed to pass the Earth in the evening at a distance of 58 000
km.
How much uncertainty about its orbit is left?

How bright is it? My approximate calculations show it should be visible
to naked eye, but perhaps not conspicuously brilliant. Any comments?


I think it's supposed to be 5th mag. You will need a dark sky. It's
also a relatively small point, as opposed to a comet, and you will
*HAVE* to know what you are looking at, compared to the background
stars.

--

Find out about Australia's most dangerous Doomsday Cult:
http://users.bigpond.net.au/wanglese/pebble.htm

"You can't fool me, it's turtles all the way down."

Wally AngleseaË™ wrote:

I think it's supposed to be 5th mag. You will need a dark sky. It's
also a relatively small point, as opposed to a comet, and you will
*HAVE* to know what you are looking at, compared to the background
stars.

If it passes at a distance of 58000 km it's more likely to be taken for
a satellite than a background star.
Thus, you still have to know what you're looking at ...

--
I recommend Macs to my friends, and Intel machines
to those whom I don't mind billing by the hour

Anders Ekl=C3=B6f wrote:
Wally Anglesea=CB=99 wrote:

I think it's supposed to be 5th mag. You will need a dark sky.
It's
also a relatively small point, as opposed to a comet, and you will
*HAVE* to know what you are looking at, compared to the background
stars.

If it passes at a distance of 58000 km it's more likely to be taken
for
a satellite than a background star.
Thus, you still have to know what you're looking at ...

It is supposed to pass at something like 6-8 km/s. That would mean,
like, an arc minute in 2-3 seconds and 20-30 arc minutes per minute.
Does this make it conspicuous against the fixed stars?

wrote:

It is supposed to pass at something like 6-8 km/s. That would mean,
like, an arc minute in 2-3 seconds and 20-30 arc minutes per minute.
Does this make it conspicuous against the fixed stars?

In binoculars, yes. It would cross the moon in about a minute.
To the naked eye a 5th mag speck is never conspicious ....

--
I recommend Macs to my friends, and Intel machines
to those whom I don't mind billing by the hour

writes:

It is supposed to pass the Earth in the evening at a distance of 58 000
km.

Whether it is the evening or not depends entirely on your location.

How much uncertainty about its orbit is left?

About 2 Earth radii, at least for 2029 April 13.

How bright is it? My approximate calculations show it should be visible
to naked eye, but perhaps not conspicuously brilliant. Any comments?

There is some evidence to suggest that the object is brighter than
H=19.6, so it could be as bright as 4th magnitude in 2029, but only
for a short time, which means you'll need to be at the right place
on Earth to see it with the naked eye. Somewhere in Africa would do.