RECON: TNO occultation with 02GV32

Event between 02GV32 and star GA0640:19369884 with event index number of 1070343

Geocentric closest approach at 2021/08/17 23:36:56 UTC

J2000 position of star is 17:44:38.0 -24:14:34
Equinox of date position of star is 17:45:56.5 -24:15:01
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 1 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=22.5

TNO is 32.1 AU from the Sun and 31.6 AU from the Earth.
The TNO is moving 9.4 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 753 seconds.
The 1-sigma cross-track error in the shadow position is 1451 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 21.8 sec chord
Diameter=83.4 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 02GV32, (2021/08/17 23:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:44.2 -26:28:41  0.9 17.12  17
35Eta Oph      17:11:37.2 -15:45:01  2.6 11.71  12
PPM 267309     17:49:04.1 -22:29:02  6.1  1.91   3
PPM 267267     17:47:44.7 -24:08:53  8.4  0.42   1
02GV32         17:45:57.5 -24:15:01 15.7         1
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 02GV32, (2021/08/17 23:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.12  17
35Eta Oph      17:10:22.7 -15:43:29  2.6 11.71  12
PPM 267309     17:47:45.6 -22:28:40  6.1  1.91   3
PPM 267267     17:46:25.3 -24:08:29  8.4  0.42   1
02GV32         17:44:38.0 -24:14:34 15.7         1
Positions are for J2000

Event circumstances last updated at 2021/05/17 01:06:06 UT

Marc W. Buie, Southwest Research Institute

RECON