RECON: TNO occultation with 15820

Event between (15820) 94TB and star GA1220:00894790 with event index number of 1230145

Geocentric closest approach at 2023/03/11 19:33:58 UTC

J2000 position of star is 04:11:21.5 +32:30:08
Equinox of date position of star is 04:12:49.8 +32:33:37
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 152 degrees from the moon. Moon is 83% illuminated.
Apparent brightness V=22.2

Object is 27.1 AU from the Sun and 27.3 AU from the Earth.
Apparent velocity is 14.6 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 278 seconds.
The 1-sigma cross-track error in the shadow position is 1973 km.

The object has an absolute magnitude Hv=7.6
Diameter=183.7 km assuming a 5% albedo -- 12.5 sec chord
Diameter=75.0 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15820, (2023/03/11 19:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:15.2 +16:33:15  0.8 16.93 150
44Zet Per      03:55:35.7 +31:57:02  2.8  3.70 155
PPM 069097     04:08:25.2 +33:30:25  6.4  1.32 152
PPM 069216     04:14:27.4 +32:35:25  7.8  0.34 151
PPM 069188     04:12:41.9 +32:28:21 10.3  0.09 152
15820          04:12:50.4 +32:33:38 14.9       151
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 15820, (2023/03/11 19:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 16.93 150
44Zet Per      03:54:07.9 +31:53:01  2.8  3.70 155
PPM 069097     04:06:55.8 +33:26:46  6.4  1.32 152
PPM 069216     04:12:58.4 +32:31:57  7.8  0.34 151
PPM 069188     04:11:13.0 +32:24:50 10.3  0.09 152
15820          04:11:21.5 +32:30:08 14.9       152
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:31:24 UT

Marc W. Buie, Southwest Research Institute

RECON