RECON: TNO occultation with 15VX164

Event between 15VX164 and star GA1040:00594074 with event index number of 2723930

Geocentric closest approach at 2023/03/30 10:51:35 UTC

J2000 position of star is 04:43:01.3 +15:31:49
Equinox of date position of star is 04:44:16.4 +15:34:12
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 44 degrees from the moon. Moon is 63% illuminated.
TNO apparent brightness V=24.5

TNO is 26.8 AU from the Sun and 27.2 AU from the Earth.
The TNO is moving 19.9 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 109 seconds.
The 1-sigma cross-track error in the shadow position is 1169 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=59.2 km assuming a 5% albedo -- 3.0 sec chord
Diameter=24.2 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15VX164, (2023/03/30 10:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:15.4 +16:33:15  0.8  1.97  46
Bellatrix      05:26:22.7 +06:22:08  1.6 13.81  40
91Sig1Tau      04:40:29.0 +15:50:38  5.3  0.97  45
PPM 120174     04:44:19.9 +15:31:57  8.1  0.04  44
15VX164        04:44:21.0 +15:34:21 16.0        44
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 15VX164, (2023/03/30 10:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  1.97  46
Bellatrix      05:25:07.8 +06:20:58  1.6 13.81  40
91Sig1Tau      04:39:09.2 +15:47:58  5.3  0.97  45
PPM 120174     04:43:00.2 +15:29:25  8.1  0.04  44
15VX164        04:43:01.3 +15:31:49 16.0        44
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:23:40 UT

Marc W. Buie, Southwest Research Institute

RECON