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Ceres (& Vesta)

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#1 JimK

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Posted 26 November 2012 - 11:23 AM

Taurus is now more visible to me, and as of last night I confirmed my 4th asteroid using a Questar 3.5, (1)Ceres {although I think it is now a dwarf planet}. And I again found (4)Vesta -- my observations of (2)Pallas & (3)Juno were reported earlier on CN (click here). I have found the Questar quite suitable for finding the four brightest asteroids.

I've attached the sketch I made for (1)Ceres -- low power (50x to 70x) was sufficient for viewing.

Both asteriods are in the general vicinity east and southeast of Jupiter (Sky & Telescope Dec'12, p50, has a decent finder chart). Ceres is above (N) and between 1 Gem and 3 Gem, moving NW, and it doesn't seem to be very bright (~8th magnitude), but it should brighten over the next few weeks as it reaches opposition (ditto with Vesta). Vesta is WNW of 111 Tau, moving W, and is a little brighter than Ceres (~7th magnitude). I was able to view these objects even with a bright >90% moon, so give it a try in your Questar and post your results and/or tips for others.

{Edited to correct the link}

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#2 JimK

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Posted 26 November 2012 - 11:24 AM

I've attached the sketch I made for (4)Vesta -- low power (50x to 70x) was sufficient for viewing.

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#3 Les

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Posted 26 November 2012 - 08:13 PM

Jim,

What is the elapsed time between positions plotted? The "click here" link seems to point back to this post.

#4 JimK

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Posted 26 November 2012 - 09:25 PM

Thanks for the info on the link -- I have corrected my error.

Each sketch shows the position of an asteroid during two observations -- the arrow on the right corresponds to the time/date in the upper right, and the arrow on left matches the time/date in the lower left. The movement is over a 24-hour time period between my observations.






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