2023-05-30, 04:04 PM
Here's an update for the close approach of the recently discovered NEO 2023 HO18. The particulars haven't changed much.
As of 2023 May 30 CNEOS predicts that the close approach will occur on 2023-Jun-04 17:43±<00:01 UT at a distance of 0.00312 AU with V Relative = 4.66 km/sec, H=25.2 magnitude, diameter 24 m - 54 m, 'Rarity'=1. The Condition Code=6 with a 38 day observation arc. The Earth MOID=0.00307891 AU.
Using MPC's elements for 2023 May 30, ST4v predicts that this NEO will reach a maximum brightness of 13 .5 magnitude on 2023 Jun 4 0800 EDT when the NEO will be 492.2k km distant moving through Scorpius at 107"/min. This occurs in daylight and below the horizon as seen from Columbus, Ohio. Close approach is predicted to occur (to the nearest hour) on 2023 Jun 4 at 1400 EDT with the 13.7 magnitude NEO moving through Scorpius at 117"/min still in daylight & below the horizon as seen from Columbus, Ohio.
This object is best for the southern hemisphere, but it may be observable on the morning of Jun 3 in Serpens and Jun 4 in Libra from the northern hemisphere. Since this one will be very close, parallax will affect the apparent position in the sky, so anyone who wants to observe this object should download the MPC elements for NEOs at Today's Epoch using SkyTools.
Here's the Object Info dialog for this close approach:
There's still some time to get ready for this one.
Good hunting,
Phil S.
As of 2023 May 30 CNEOS predicts that the close approach will occur on 2023-Jun-04 17:43±<00:01 UT at a distance of 0.00312 AU with V Relative = 4.66 km/sec, H=25.2 magnitude, diameter 24 m - 54 m, 'Rarity'=1. The Condition Code=6 with a 38 day observation arc. The Earth MOID=0.00307891 AU.
Using MPC's elements for 2023 May 30, ST4v predicts that this NEO will reach a maximum brightness of 13 .5 magnitude on 2023 Jun 4 0800 EDT when the NEO will be 492.2k km distant moving through Scorpius at 107"/min. This occurs in daylight and below the horizon as seen from Columbus, Ohio. Close approach is predicted to occur (to the nearest hour) on 2023 Jun 4 at 1400 EDT with the 13.7 magnitude NEO moving through Scorpius at 117"/min still in daylight & below the horizon as seen from Columbus, Ohio.
This object is best for the southern hemisphere, but it may be observable on the morning of Jun 3 in Serpens and Jun 4 in Libra from the northern hemisphere. Since this one will be very close, parallax will affect the apparent position in the sky, so anyone who wants to observe this object should download the MPC elements for NEOs at Today's Epoch using SkyTools.
Here's the Object Info dialog for this close approach:
There's still some time to get ready for this one.
Good hunting,
Phil S.