RECON: TNO occultation with 11VZ24

Event between 11VZ24 and star GA0920:00671043 with event index number of 2138458

Geocentric closest approach at 2024/04/02 05:20:27 UTC

J2000 position of star is 05:20:47.5 +02:50:42
Equinox of date position of star is 05:22:02.8 +02:52:02
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 145 degrees from the moon. Moon is 49% illuminated.
Apparent brightness V=22.8

Object is 36.5 AU from the Sun and 36.9 AU from the Earth.
Apparent velocity is 18.6 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 135 seconds.
The 1-sigma cross-track error in the shadow position is 2080 km.

The object has an absolute magnitude Hv=7.0
Diameter=242.1 km assuming a 5% albedo -- 13.1 sec chord
Diameter=98.8 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 11VZ24, (2024/04/02 05:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:29.1 +07:24:34  0.4  9.70 154
Bellatrix      05:26:26.0 +06:22:11  1.6  3.67 148
21 Ori         05:20:27.2 +02:37:09  5.7  0.47 145
PPM 148800     05:22:08.5 +02:57:06  7.2  0.09 145
11VZ24         05:22:03.7 +02:52:03 16.6       145
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 11VZ24, (2024/04/02 05:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.70 154
Bellatrix      05:25:07.8 +06:20:58  1.6  3.67 148
21 Ori         05:19:11.1 +02:35:44  5.7  0.47 145
PPM 148800     05:20:52.3 +02:55:44  7.2  0.09 145
11VZ24         05:20:47.5 +02:50:42 16.6       145
Positions are for J2000

Event circumstances last updated at 2023/12/16 05:09:13 UT

Marc W. Buie, Southwest Research Institute

RECON