Greg does ST4V contain the RCW catalogue of HII regions?

CNEOS predicts that the newly discovered NEO 2023 DQ will make a close approach on 2023-Mar-08 07:07 ±  02:59 UT at a distance of 0.01576 AU. H=21.5 magnitude, V relative=22.87 km/sec, 'Rarity' =2, Condition Code = 9.  It's a medium sized object 140 m - 300 m in dimeter. This MP was discovered at MAP, San Pedro de Atacama on 2023-02-23.

Using MPC's elements for February 25 2023 00:00 UT, ST4v predicts that this MP will reach a peak brightness of 14.3 magnitude on March 7 at 1700 EST when the NEO will be moving through Cancer at 109.5"/min at 0.02 AU distance, but in daylight in Columbus, Ohio. Close approach (to the nearest hour) is predicted to occur on March 8 at 0200 EST (0700 UT) when 2023 DQ at 14.5 magnitude will be moving through Lynx at 119.3"/min, 0.02 AU distant. This NEO will be brighter than 15.5 Mag Mar 5@2300 to brighter than 15.9 Mag Mar 8@2300 EST. The Minimum Re time should get better determined in the next few days as more observations are obtained.

Here's an Interactive Atlas chart showing the predicted position of 2023 DQ on March 6 - 8 as seen from Columbus, Ohio:     

This MP is initially best visible from the southern hemisphere, but quickly moves north as it passes.

Good hunting.

Phil S.

Here's an image taken using iTelescope T71 in Chile on 2023 Feb 22:     

It's a stack of 30 second LRGB exposures processed in Astro Pixel Processor (APP).

Phil S.

I just wanted to wish everyone a happy JD 2460000 and many more, as they say!

I appreciate each and everyone one of you.

Clear skies,
Greg

CNEOS predicts that this large NEO will make a close approach on 2023-Feb-25 06:11 ± <00:01 UT at a distance of 0.12273 AU. H=18.1 magnitude, V relative=18.11 km/sec, 'Rarity'=1 & Condition Code=0. This is a large object, 360m - 1.4 km so it's already 16.1 magnitude according to ST4v despite still being 0.1 AU distant. I thought that it might be interesting to keep an eye on it as it approaches.

Using MPC's orbital elements for the epoch 2023 February 16 00:00 UT, ST4v predicts that this NEO will reach a maximum brightness of 16.1 magnitude on February 21 traveling in Centaurus at ~10"/min. The light curve is very wide, so the magnitude doesn't change much over several days near the maximum. This NEO is best visible from the southern hemisphere or below 30° N.

Here's an Interactive Atlas chart showing the predicted path of this NEO from 2023 February 17 - 27 for Brisbane, Australia:      

Note that the times shown in the OI dialog Notes are EST.

Good hunting,

Phil S.

CNEOS predicts that this NEO will make a close approach on 2023-Feb-21 18:56 ± < 00:01 UT at a distance of 0.04363 AU. H=19.3 magnitude, V relative=11.07 km/sec, 'Rarity'=1 & Condition Code=0. This is a medium-sized object, 370 - 820 m.

Using MPC's orbital elements for the epoch 2023 February 6 00:00 UT, ST4v predicts that this NEO will reach a maximum brightness of 14.5 magnitude on February 25, 0.05 AU distant traveling through Lynx at 14.6"/min. Close approach occurs on 2023 February 21 1400 EST (to the nearest hour) when ST4v predicts that it's 14.9 magnitude moving through Auriga at 21.1"/min in daylight in Columbus, Ohio. MPC's elements for 2023 Jan 6 predicted the same results as the Feb 6 elements since this object's orbit is very accurately known.

Here's an Interactive Atlas chart showing the predicted path of this NEO from 2023 February 20-March 2 for Columbus, Ohio:     

Good hunting,

Phil S.

Hello,

I asked iTelescope support which of their telescopes had mounts that could track something like a comet. The answer surprised me. They said that they had very recently discovered a bug that was causing all telescopes on Paramounts to be unable to track at orbital rates. They are currently working on it. They had hoped to have T02 fixed, but I tested it it early this morning and it failed to track an asteroid.

We collided with this MP last night. CNEOS lists the close approach at  2023-Feb-13 03:07 ± < 00:01 UT at 3498 km distant. It was first observed at GINOP-KHK, Piszkesteto on 2023-02-12. The MPC shows 300 observations after discovery.

According to Wikipedia: 2023 CX1, previously known as Sar2667, was a metre-sized asteroid or meteoroid that entered Earth's atmosphere on 13 February 2023 03:00 UTC and disintegrated as a meteor over the English Channel near Normandy, France. [5]

This MP was listed on the CNEOS website yesterday, but wasn't included in the MPC's NEAs at Today's Epoch datafile either yesterday or today. It is listed on their main page as having a close approach distance of 0.01 lunar distances (LD). CNEOS lists 0.009 LD.

Phil S.

I am experimenting with a new series of video podcasts called Computer Side Chats.

Episode #1 is now live.



Please let me know what you think! Should I continue making these?

Hello, I have a question about the numbers generated for resolution under Exposure Opportunities on the Exposure Calculator.     For my Celestron 8 SCT with a ASI 533mc camera with a .63 reducer, it is giving me a resolution of  7.3.   This number is higher than I was expecting so I think I do not appreciate what it is telling me.



I found this in the help: 

• Res. - the effective resolution in arc seconds during the block of time. Effective resolution depends on the imaging system, seeing, airmass, and the Nyquist sampling theorem
  

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