RECON: TNO occultation with 32929

Event between (32929) 95QY9 and star GA1120:00372048 with event index number of 2295018

Geocentric closest approach at 2025/03/05 15:36:10 UTC

J2000 position of star is 03:11:17.6 +22:30:07
Equinox of date position of star is 03:12:42.9 +22:35:35
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 10 degrees from the moon. Moon is 38% illuminated.
Apparent brightness V=23.9

Object is 31.2 AU from the Sun and 31.6 AU from the Earth.
Apparent velocity is 17.5 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 314 seconds.
The 1-sigma cross-track error in the shadow position is 2068 km.

The object has an absolute magnitude Hv=8.7
Diameter=125.9 km assuming a 5% albedo -- 6.4 sec chord
Diameter=51.4 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 32929, (2025/03/05 15:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:22.1 +16:33:29  0.8 20.80  13
44Zet Per      03:55:43.3 +31:57:23  2.8 13.35   7
58Zet Ari      03:16:21.2 +21:08:10  4.9  1.68  10
PPM 092277     03:12:47.1 +22:15:51  8.0  0.33  10
PPM 092273     03:12:41.7 +22:30:31  8.9  0.09  10
32929          03:12:45.4 +22:35:45 14.8        10
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 32929, (2025/03/05 15:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 20.80  13
44Zet Per      03:54:07.9 +31:53:01  2.8 13.35   7
58Zet Ari      03:14:54.0 +21:02:38  4.9  1.68  10
PPM 092277     03:11:19.5 +22:10:14  8.0  0.33  10
PPM 092273     03:11:13.9 +22:24:54  8.9  0.09  10
32929          03:11:17.6 +22:30:07 14.8        10
Positions are for J2000

Event circumstances last updated at 2024/06/13 03:43:17 UT

Marc W. Buie, Southwest Research Institute

RECON