RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA0860:00627449 with event index number of 2656258

Geocentric closest approach at 2027/11/19 14:08:48 UTC

J2000 position of star is 05:25:33.4 -02:13:28
Equinox of date position of star is 05:26:47.4 -02:12:16
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 52 degrees from the moon. Moon is 66% illuminated.
Apparent brightness V=18.9

Object is 11.1 AU from the Sun and 10.3 AU from the Earth.
Apparent velocity is 37.3 km/sec on the sky relative to the star, or, 18.0 arcsec/hr.
The 1-sigma error in the time of the event is 23 seconds.
The 1-sigma cross-track error in the shadow position is 1503 km.

The object has an absolute magnitude Hv=8.3
Diameter=128.2 km assuming a 5% albedo -- 3.6 sec chord
Diameter=52.4 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 468861, (2027/11/19 14:09UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:52.8 -08:10:17  0.1  6.58  57
34Del Ori      05:33:26.0 -00:16:51  2.2  2.51  50
28Eta Ori      05:25:52.8 -02:22:25  3.4  0.32  53
PPM 175823     05:27:07.6 -02:01:03  8.4  0.19  52
PPM 175826     05:27:33.2 -02:14:58  9.5  0.16  52
468861         05:26:57.7 -02:12:06 16.5        52
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 468861, (2027/11/19 14:09UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  6.58  57
34Del Ori      05:32:00.4 -00:17:57  2.2  2.51  50
28Eta Ori      05:24:28.6 -02:23:49  3.4  0.32  53
PPM 175823     05:25:43.2 -02:02:25  8.4  0.19  52
PPM 175826     05:26:08.9 -02:16:19  9.5  0.16  52
468861         05:25:33.4 -02:13:28 16.5        52
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:29:17 UT

Marc W. Buie, Southwest Research Institute

RECON