RECON: TNO occultation with 599752

Event between (599752) 10VQ11 and star GA1000:01369779 with event index number of 2728402

Geocentric closest approach at 2028/04/12 22:37:48 UTC

J2000 position of star is 06:03:38.6 +10:21:26
Equinox of date position of star is 06:04:58.2 +10:21:17
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 153 degrees from the moon. Moon is 85% illuminated.
Apparent brightness V=22.0

Object is 41.6 AU from the Sun and 42.0 AU from the Earth.
Apparent velocity is 16.8 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 315 seconds.
The 1-sigma cross-track error in the shadow position is 4106 km.

The object has an absolute magnitude Hv=5.6
Diameter=448.8 km assuming a 5% albedo -- 27.1 sec chord
Diameter=183.2 km assuming a 30% albedo -- 11.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 599752, (2028/04/12 22:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:42.2 +07:24:36  0.4  3.62 153
Alhena         06:39:20.7 +16:22:22  1.9 10.25 149
PPM 121823     06:04:59.6 +11:40:40  6.0  1.32 154
PPM 121854     06:06:14.1 +10:30:22  7.9  0.29 153
PPM 121808     06:04:22.2 +10:18:22  9.8  0.21 153
599752         06:05:12.5 +10:21:15 16.6       153
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 599752, (2028/04/12 22:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  3.62 153
Alhena         06:37:42.8 +16:23:56  1.9 10.25 149
PPM 121823     06:03:24.8 +11:40:51  6.0  1.32 154
PPM 121854     06:04:40.1 +10:30:35  7.9  0.29 153
PPM 121808     06:02:48.3 +10:18:31  9.8  0.21 153
599752         06:03:38.6 +10:21:26 16.6       153
Positions are for J2000

Event circumstances last updated at 2023/12/24 04:38:34 UT

Marc W. Buie, Southwest Research Institute

RECON