Close Approach of 2023 NR1

[PMSchu]

CNEOS predicts that this newly discovered NEO will make a close approach on 2023-Jul-22 00:49±00:29 UT at a distance of 0.00751 AU with V Relative=15.22 km/sec, H=23.4 magnitude, diameter 57 m - 130 m, 'Rarity'=2. The Condition Code=8 with a 2 day observation arc. The Earth MOID=0.00034764 AU. This is another NEO that should end up on the Potentially Hazardous Objects list.

The first reported observation was by ATLAS Chile, Rio Hurtado on 2023-07-14.

Here's the Object Info dialog for this object:     

Good hnting,

Phil S.

[bigmasterdrago]

By adding an osculating element set from Horizons for 00:00 UT July 22, I can get SkyTools to create an ephemeris that is position displaced by only 3" in DEC. This is the time very near closest approach and magnitude 15.28. Bravo for ST!

Below SE Texas horizon and daylight for Dennis.

Best time for Dennis might be 19:00UT July 21. And brighter at mag 14.9. Rock up 60° on the Pisces/Aquarius/Cetus border moving NE @2.5'/min. Sun 20° down.

Hope his weather is good.

[PMSchu]

CNEOS has refined the orbit for this NEO. As of 2023 Jul 20, the Condition Code=7 with a 5 day observation arc.

A 3" error sounds very good for an object that will be as close as 2023 NR1 at close approach. It's currently 0.01 AU distant.

Phil S.

[bigmasterdrago]

Amazing... but only when using/updating osculating elements. Moving 2.5'/min might make it obvious but using the other epoch dates do not have the same accuracy unless fetched todays on the day of observation.

[Dennis]

I’m a little late to the party for 2023 NR1, but I did manage to grab a set of images from Brisbane on 19th July 2023.
One set was at the Sidereal Rate showing the trail of NEO 2023 NR1, then I managed to grab some with the mount tracking at the custom rate of NR1.
 
For the Sidereal Image Frame #1:
·       ExpDateTime     19/07/2023 12:01:06 PM
·       Exposure            60
·       Pixel_size_X       7.52
·       Pixel_size_Y       7.52
·       Binning X            2
·       Binning Y            2
·       Pedestal              100
·       Gain                     2
·       OBJCTRA             '20 27 54.759'       / SBIGFITSEXT The right ascension of the center o
·       OBJCTDEC          '-29 46 27.86'       / SBIGFITSEXT The declination of the center of th
·       OBJECT               '2023 NR1'           / SBIGFITSEXT The name of the object imaged     
·       LOCALTIM           '19/07/2023 10:01:06.450 PM STD' / Local time at exposure start
 
For the Custom Tracked single image:
·       ExpDateTime     19/07/2023 12:41:18 PM
·       Exposure            60
·       Pixel_size_X       7.52
·       Pixel_size_Y       7.52
·       Binning X            2
·       Binning Y            2
·       Pedestal              100
·       Gain                     2
·       OBJCTRA             '20 28 44.357'       / SBIGFITSEXT The right ascension of the center o
·       OBJCTDEC          '-29 43 14.19'       / SBIGFITSEXT The declination of the center of th
·       OBJECT               '2023 NR1'           / SBIGFITSEXT The name of the object imaged     
·       LOCALTIM           '19/07/2023 10:41:18.149 PM STD' / Local time at exposure start      

The above Copy/Paste FITs Header info are for the full frame shots, not the full res-crops of the region of interest.

Cheers
 
Dennis

   

   

   

   

[PMSchu]

Great work again, Dennis! The pinpoint tracking on the NEO is additional evidence that it's the correct object, too. What are the chances of tracking on another MP with those orbital elements? Close to zero.

Phil S.