RECON: TNO occultation with 04VX130

Event between 04VX130 and star GA1140:00814945 with event index number of 2568122

Geocentric closest approach at 2023/10/12 01:54:31 UTC

J2000 position of star is 04:46:53.9 +25:07:43
Equinox of date position of star is 04:48:20.5 +25:10:10
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 95 degrees from the moon. Moon is 7% illuminated.
Apparent brightness V=23.6

Object is 38.7 AU from the Sun and 38.1 AU from the Earth.
Apparent velocity is 12.8 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 1408 seconds.
The 1-sigma cross-track error in the shadow position is 4952 km.

The object has an absolute magnitude Hv=7.6
Diameter=178.7 km assuming a 5% albedo -- 14.0 sec chord
Diameter=72.9 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 04VX130, (2023/10/12 01:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.3 +16:33:19  0.8  8.99  99
3Iot Aur       04:58:32.8 +33:12:05  2.7  8.33  92
PPM 093742     04:47:08.8 +23:40:12  6.1  1.52  96
PPM 093748     04:47:40.0 +26:04:36  7.4  0.92  95
PPM 093787     04:50:02.8 +24:46:59  8.7  0.54  95
PPM 093781     04:49:41.7 +25:14:09 11.7  0.31  95
04VX130        04:48:21.2 +25:10:11 16.5        95
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 04VX130, (2023/10/12 01:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  8.99  99
3Iot Aur       04:56:59.6 +33:09:58  2.7  8.33  92
PPM 093742     04:45:42.5 +23:37:41  6.1  1.52  96
PPM 093748     04:46:12.1 +26:02:07  7.4  0.92  95
PPM 093787     04:48:35.8 +24:44:35  8.7  0.54  95
PPM 093781     04:48:14.3 +25:11:43 11.7  0.31  95
04VX130        04:46:53.9 +25:07:43 16.5        95
Positions are for J2000

Event circumstances last updated at 2023/07/27 03:50:36 UT

Marc W. Buie, Southwest Research Institute

RECON