Hi Dennis,
If the weather had cooperated, was the alert in time for you to have observed the close approach? There's about a half day time difference between Brisbane & Columbus. We're GMT-4 & you're GMT+10, but then there's the day ahead thing to consider that messes me up.
Another newly discovered NEO 2022 MJ3 just screamed past today at 12:44 UT, 0.00101 AU distant, H=29.6, 'Rarity'=0 from the CNEOS website. According to ST4v it reached peak brightness of 16.8 magnitude in Circinus moving 500.3"/min and 175.9k km distant at 1000 UT. Close approach of 155.7k km occurred at ~1200UT when it was 17.0 magnitude moving through Chamaeleon at 10.6"/sec! Amost like watching a meteor pass through the FOV
.
Note that when I calculate the ephemeris for the MPs, I use a time step of 2 hours because that seems to be close enough for the purposes of screening the possibilities for good events. Here's what the ephemeris looks like with 15 minute time intervals: [attachment=2418]
Add 4 hours to convert from EDT to UT & ST4v's results are right on the money as expected.
At least you're getting your beauty sleep with this lousy weather & the reservoirs are getting full.
Phi S.
If the weather had cooperated, was the alert in time for you to have observed the close approach? There's about a half day time difference between Brisbane & Columbus. We're GMT-4 & you're GMT+10, but then there's the day ahead thing to consider that messes me up.
Another newly discovered NEO 2022 MJ3 just screamed past today at 12:44 UT, 0.00101 AU distant, H=29.6, 'Rarity'=0 from the CNEOS website. According to ST4v it reached peak brightness of 16.8 magnitude in Circinus moving 500.3"/min and 175.9k km distant at 1000 UT. Close approach of 155.7k km occurred at ~1200UT when it was 17.0 magnitude moving through Chamaeleon at 10.6"/sec! Amost like watching a meteor pass through the FOV
.Note that when I calculate the ephemeris for the MPs, I use a time step of 2 hours because that seems to be close enough for the purposes of screening the possibilities for good events. Here's what the ephemeris looks like with 15 minute time intervals: [attachment=2418]
Add 4 hours to convert from EDT to UT & ST4v's results are right on the money as expected.
At least you're getting your beauty sleep with this lousy weather & the reservoirs are getting full.
Phi S.