RECON: TNO occultation with 307463

Event between (307463) 02VU130 and star GA1120:01471826 with event index number of 1303070

Geocentric closest approach at 2024/04/15 17:25:32 UTC

J2000 position of star is 05:48:03.2 +23:23:41
Equinox of date position of star is 05:49:27.3 +23:24:04
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 49% illuminated.
Apparent brightness V=22.0

Object is 38.9 AU from the Sun and 39.3 AU from the Earth.
Apparent velocity is 18.5 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 274 seconds.
The 1-sigma cross-track error in the shadow position is 1543 km.

The object has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 21.2 sec chord
Diameter=162.5 km assuming a 30% albedo -- 8.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 307463, (2024/04/15 17:23UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:29.3 +07:24:34  0.4 16.08  34
Alnath         05:27:49.8 +28:37:33  1.6  7.14  33
PPM 094739     05:44:48.1 +23:12:49  5.9  1.10  30
PPM 094824     05:47:25.9 +24:13:58  8.2  0.96  29
PPM 094910     05:50:07.6 +23:47:30  8.6  0.41  28
PPM 094893     05:49:36.4 +23:22:58 10.4  0.03  29
307463         05:49:31.9 +23:24:05 16.9        28
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 307463, (2024/04/15 17:23UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.08  34
Alnath         05:26:17.6 +28:36:23  1.6  7.14  33
PPM 094739     05:43:19.5 +23:12:15  5.9  1.10  30
PPM 094824     05:45:56.6 +24:13:30  8.2  0.96  29
PPM 094910     05:48:38.6 +23:47:08  8.6  0.41  28
PPM 094893     05:48:07.7 +23:22:34 10.4  0.03  29
307463         05:48:03.2 +23:23:41 16.9        29
Positions are for J2000

Event circumstances last updated at 2023/01/13 04:04:31 UT

Marc W. Buie, Southwest Research Institute

RECON