RECON: TNO occultation with 612048

Event between (612048) 96TS66 and star GA1160:01293298 with event index number of 2803893

Geocentric closest approach at 2024/10/13 23:17:36 UTC

J2000 position of star is 05:23:28.3 +26:23:00
Equinox of date position of star is 05:24:54.0 +26:24:12
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 110 degrees from the moon. Moon is 83% illuminated.
Apparent brightness V=22.2

Object is 38.5 AU from the Sun and 38.0 AU from the Earth.
Apparent velocity is 9.9 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 455 seconds.
The 1-sigma cross-track error in the shadow position is 2350 km.

The object has an absolute magnitude Hv=6.2
Diameter=350.0 km assuming a 5% albedo -- 35.5 sec chord
Diameter=142.9 km assuming a 30% albedo -- 14.5 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 
 
 

Star training set for 612048, (2024/10/13 23:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.7 +16:33:26  0.8 14.81  97
Alnath         05:27:51.7 +28:37:34  1.6  2.31 111
PPM 094294     05:22:32.9 +27:58:48  6.3  1.67 110
PPM 094373     05:28:34.8 +27:37:44  8.4  1.46 111
PPM 094355     05:27:33.6 +25:46:47  8.8  0.85 110
PPM 094330     05:25:29.5 +26:31:02 12.0  0.16 110
612048         05:25:00.8 +26:24:17 16.1       110
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 612048, (2024/10/13 23:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 14.81  97
Alnath         05:26:17.6 +28:36:23  1.6  2.31 111
PPM 094294     05:20:59.3 +27:57:25  6.3  1.67 110
PPM 094373     05:27:01.4 +27:36:35  8.4  1.46 111
PPM 094355     05:26:01.5 +25:45:35  8.8  0.85 110
PPM 094330     05:23:57.0 +26:29:46 12.0  0.16 110
612048         05:23:28.3 +26:23:00 16.1       110
Positions are for J2000

Event circumstances last updated at 2022/12/24 04:07:38 UT

Marc W. Buie, Southwest Research Institute

RECON