RECON: TNO occultation with 524747

Event between (524747) 03UJ292 and star GA1000:00301525 with event index number of 1592919

Geocentric closest approach at 2025/02/27 07:41:36 UTC

J2000 position of star is 03:25:21.6 +11:32:57
Equinox of date position of star is 03:26:42.0 +11:38:02
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 82 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=22.9

Object is 38.0 AU from the Sun and 38.3 AU from the Earth.
Apparent velocity is 14.0 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 452 seconds.
The 1-sigma cross-track error in the shadow position is 2711 km.

The object has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 18.0 sec chord
Diameter=102.6 km assuming a 30% albedo -- 7.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 524747, (2025/02/27 07:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:22.0 +16:33:29  0.8 17.81 100
Menkar         03:03:35.9 +04:11:13  2.5  9.40  75
PPM 119093     03:28:42.1 +12:49:18  6.5  1.28  83
PPM 119067     03:26:27.1 +11:03:49  7.7  0.58  82
PPM 119080     03:27:07.6 +11:37:33  9.9  0.10  82
524747         03:26:44.3 +11:38:11 16.9        83
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 524747, (2025/02/27 07:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.81 100
Menkar         03:02:16.8 +04:05:21  2.5  9.40  75
PPM 119093     03:27:18.7 +12:44:07  6.5  1.28  83
PPM 119067     03:25:04.7 +10:58:35  7.7  0.58  82
PPM 119080     03:25:44.8 +11:32:20  9.9  0.10  82
524747         03:25:21.6 +11:32:57 16.9        82
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:44:06 UT

Marc W. Buie, Southwest Research Institute

RECON