RECON: TNO occultation with 02PQ152

Event between 02PQ152 and star GA1160:00371646 with event index number of 1071004

Geocentric closest approach at 2021/09/24 15:34:40 UTC

J2000 position of star is 02:48:12.6 +26:08:21
Equinox of date position of star is 02:49:28.7 +26:13:42
Stellar brightness G=13.2, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 12 degrees from the moon. Moon is 87% illuminated.
TNO apparent brightness V=23.1

TNO is 24.5 AU from the Sun and 23.8 AU from the Earth.
The TNO is moving 15.4 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 700 seconds.
The 1-sigma cross-track error in the shadow position is 3756 km.

The TNO has an absolute magnitude Hv=9.1
Diameter=90.0 km assuming a 5% albedo -- 5.9 sec chord
Diameter=36.7 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 02PQ152, (2021/09/24 15:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:10.2 +16:33:05  0.8 26.80  26
Hamal          02:08:24.2 +23:33:51  2.0  9.69  13
PPM 091996     02:50:02.0 +25:16:39  5.9  0.96  11
PPM 092014     02:51:30.1 +25:25:21  8.0  0.93  11
PPM 091992     02:49:54.7 +26:42:17  9.6  0.49  12
PPM 091993     02:49:58.6 +26:15:00 10.3  0.11  12
02PQ152        02:49:29.0 +26:13:43 13.2        12
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 02PQ152, (2021/09/24 15:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 26.80  26
Hamal          02:07:10.7 +23:27:42  2.0  9.69  13
PPM 091996     02:48:46.0 +25:11:17  5.9  0.96  11
PPM 092014     02:50:14.0 +25:20:01  8.0  0.93  11
PPM 091992     02:48:38.1 +26:36:55  9.6  0.49  12
PPM 091993     02:48:42.2 +26:09:38 10.3  0.11  12
02PQ152        02:48:12.6 +26:08:21 13.2        12
Positions are for J2000

Event circumstances last updated at 2021/08/25 04:09:48 UT

Marc W. Buie, Southwest Research Institute

RECON