RECON: TNO occultation with 508792

Event between (508792) 00FX53 and star GA0760:05052531 with event index number of 2439830

Geocentric closest approach at 2028/06/19 17:04:57 UTC

J2000 position of star is 14:46:17.3 -12:17:42
Equinox of date position of star is 14:47:37.4 -12:23:48
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 169 degrees from the moon. Moon is 11% illuminated.
Apparent brightness V=23.8

Object is 38.0 AU from the Sun and 37.3 AU from the Earth.
Apparent velocity is 15.5 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 706 seconds.
The 1-sigma cross-track error in the shadow position is 3235 km.

The object has an absolute magnitude Hv=7.9
Diameter=166.0 km assuming a 5% albedo -- 10.0 sec chord
Diameter=67.8 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 508792, (2028/06/19 17:05UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:41.8 -11:18:32  1.0 19.88 153
27Bet Lib      15:18:32.6 -09:29:10  2.6  8.08 167
7Mu Lib        14:50:53.0 -14:15:57  5.8  1.99 171
PPM 229299     14:49:28.4 -12:57:29  6.6  0.67 169
PPM 229260     14:47:41.4 -12:24:48  9.9  0.04 169
508792         14:47:50.4 -12:24:48 14.9       169
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 508792, (2028/06/19 17:05UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 19.88 153
27Bet Lib      15:17:00.3 -09:22:59  2.6  8.08 167
7Mu Lib        14:49:18.9 -14:08:56  5.8  1.99 171
PPM 229299     14:47:55.0 -12:50:26  6.6  0.67 169
PPM 229260     14:46:08.3 -12:17:42  9.9  0.04 169
508792         14:46:17.3 -12:17:42 14.9       169
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:30:01 UT

Marc W. Buie, Southwest Research Institute

RECON