RECON: TNO occultation with 492338

Event between (492338) 14FW and star GA0660:37637013 with event index number of 2321941

Geocentric closest approach at 2024/04/15 15:20:10 UTC

J2000 position of star is 19:26:20.0 -23:41:48
Equinox of date position of star is 19:27:47.2 -23:38:49
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 174 degrees from the moon. Moon is 49% illuminated.
Apparent brightness V=22.0

Object is 14.8 AU from the Sun and 14.6 AU from the Earth.
Apparent velocity is 5.9 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 510 seconds.
The 1-sigma cross-track error in the shadow position is 630 km.

The object has an absolute magnitude Hv=10.0
Diameter=59.4 km assuming a 5% albedo -- 10.1 sec chord
Diameter=24.3 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 492338, (2024/04/15 15:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.0 -26:29:02  0.9 39.97 136
Nunki          18:56:46.2 -26:15:52  2.0  7.50 168
49Chi3Sgr      19:26:57.7 -23:54:46  4.8  0.33 174
PPM 269793     19:28:26.0 -23:59:45  8.2  0.38 175
PPM 269808     19:29:04.4 -23:43:07  9.3  0.30 175
492338         19:27:47.9 -23:38:48 16.7       174
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 492338, (2024/04/15 15:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 39.97 136
Nunki          18:55:15.9 -26:17:49  2.0  7.50 168
49Chi3Sgr      19:25:29.7 -23:57:45  4.8  0.33 174
PPM 269793     19:26:57.9 -24:02:47  8.2  0.38 175
PPM 269808     19:27:36.4 -23:46:10  9.3  0.30 175
492338         19:26:20.0 -23:41:48 16.7       174
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:20:12 UT

Marc W. Buie, Southwest Research Institute

RECON