RECON: TNO occultation with 11UQ62

Event between 11UQ62 and star GA1100:00741561 with event index number of 315102

Geocentric closest approach at 2020/03/28 21:48:45 UTC

J2000 position of star is 04:48:56.7 +21:16:43
Equinox of date position of star is 04:50:08.8 +21:18:46
Stellar brightness G=14.6, use SENSEUP=128
Star is 16 degrees from the moon. Moon is 18% illuminated.
TNO apparent brightness V=22.4

TNO is 16.0 AU from the Sun and 16.4 AU from the Earth.
The TNO is moving 21.4 km/sec on the sky relative to the star, or, 6.5 arcsec/hr.
The 1-sigma error in the time of the event is 35 seconds.
The 1-sigma cross-track error in the shadow position is 596 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=71.1 km assuming a 5% albedo -- 2.8 sec chord
Diameter=29.0 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 11UQ62, (2020/03/28 21:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:05.1 +16:32:54  0.8  5.68  12
Alnath         05:27:34.4 +28:37:21  1.6 11.19  26
PPM 093742     04:46:55.9 +23:39:49  6.1  2.47  16
PPM 093789     04:49:56.1 +21:21:00  7.3  0.06  15
11UQ62         04:50:09.0 +21:18:46 14.6        16
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 11UQ62, (2020/03/28 21:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  5.68  12
Alnath         05:26:17.5 +28:36:23  1.6 11.19  26
PPM 093742     04:45:42.5 +23:37:41  6.1  2.47  16
PPM 093789     04:48:43.8 +21:18:56  7.3  0.06  15
11UQ62         04:48:56.7 +21:16:43 14.6        16
Positions are for J2000

Event circumstances last updated at 2020/03/10 21:12:40 UT

Marc W. Buie, Southwest Research Institute

RECON