RECON: TNO occultation with 15VZ184

Event between 15VZ184 and star GA1220:00712862 with event index number of 2726969

Geocentric closest approach at 2023/08/12 15:55:21 UTC

J2000 position of star is 03:37:49.6 +32:21:54
Equinox of date position of star is 03:39:16.2 +32:26:20
Stellar brightness G=14.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 39 degrees from the moon. Moon is 12% illuminated.
Apparent brightness V=22.6

Object is 28.6 AU from the Sun and 28.8 AU from the Earth.
Apparent velocity is 13.2 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is 1364 km.

The object has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 12.7 sec chord
Diameter=67.8 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15VZ184, (2023/08/12 15:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:16.7 +16:33:18  0.8 20.60  31
44Zet Per      03:55:37.3 +31:57:07  2.8  3.49  36
38Omi Per      03:45:48.4 +32:21:40  3.7  1.37  38
PPM 068593     03:36:29.9 +32:05:38  7.2  0.69  40
PPM 068655     03:40:52.1 +32:37:55  9.8  0.38  39
PPM 068649     03:40:23.8 +32:19:24 10.9  0.26  39
15VZ184        03:39:18.6 +32:26:28 14.4        39
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 15VZ184, (2023/08/12 15:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 20.60  31
44Zet Per      03:54:07.9 +31:53:01  2.8  3.49  36
38Omi Per      03:44:19.1 +32:17:17  3.7  1.37  38
PPM 068593     03:35:01.3 +32:00:59  7.2  0.69  40
PPM 068655     03:39:23.0 +32:33:23  9.8  0.38  39
PPM 068649     03:38:54.9 +32:14:52 10.9  0.26  39
15VZ184        03:37:49.6 +32:21:54 14.4        39
Positions are for J2000

Event circumstances last updated at 2022/12/24 03:43:41 UT

Marc W. Buie, Southwest Research Institute

RECON