RECON: TNO occultation with 02GB32

Event between 02GB32 and star UC4-418-061222 with event index number of 174300

Geocentric closest approach at 2019/01/12 04:35:49 UTC

J2000 position of star is 15:05:05.3 -06:34:37
Equinox of date position of star is 15:06:00.6 -06:38:37
Stellar brightness R=15.3, use SENSEUP=128
Star is 133 degrees from the moon. Moon is 30% illuminated.
TNO apparent brightness V=23.4

TNO is 35.6 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 20.1 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 384 seconds.
The 1-sigma cross-track error in the shadow position is 2324 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=175.4 km assuming a 5% albedo -- 8.7 sec chord
Diameter=71.6 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 02GB32, (2019/01/12 04:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:11.9 -11:15:36  1.0 25.09 153
27Bet Lib      15:18:02.0 -09:27:07  2.6  4.07 129
19Del Lib      15:01:59.5 -08:35:36  4.9  2.19 133
PPM 198193     15:05:07.4 -06:57:39  7.9  0.39 133
PPM 198222     15:06:40.0 -06:39:48  9.6  0.14 132
02GB32         15:06:05.9 -06:39:00 15.3       132
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 02GB32, (2019/01/12 04:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 25.09 153
27Bet Lib      15:17:00.3 -09:22:59  2.6  4.07 129
19Del Lib      15:00:58.3 -08:31:08  4.9  2.19 133
PPM 198193     15:04:06.7 -06:53:14  7.9  0.39 133
PPM 198222     15:05:39.4 -06:35:26  9.6  0.14 132
02GB32         15:05:05.3 -06:34:37 15.3       133
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:37:04 UT

Marc W. Buie, Southwest Research Institute

RECON