RECON: TNO occultation with 14XB48

Event between 14XB48 and star GA0820:00307438 with event index number of 2682359

Geocentric closest approach at 2024/07/15 22:07:11 UTC

J2000 position of star is 03:51:39.1 -07:57:23
Equinox of date position of star is 03:52:42.9 -07:53:31
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 149 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=22.7

TNO is 34.3 AU from the Sun and 34.8 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 153 seconds.
The 1-sigma cross-track error in the shadow position is 2247 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=212.8 km assuming a 5% albedo -- 9.1 sec chord
Diameter=86.9 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 7:2EEEEE
 
 
 
 
 
 
 
 

Star training set for 14XB48, (2024/07/15 22:07UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:43.1 -08:10:30  0.1 20.52 135
Menkar         03:03:33.9 +04:11:05  2.5 17.23 164
30 Eri         03:53:54.5 -05:17:23  5.6  2.61 151
PPM 186300     03:54:38.1 -07:56:38  8.1  0.45 148
PPM 186260     03:52:41.7 -08:04:09  9.2  0.19 149
14XB48         03:52:50.7 -07:53:03 14.2       149
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 14XB48, (2024/07/15 22:07UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 20.52 135
Menkar         03:02:16.8 +04:05:21  2.5 17.23 164
30 Eri         03:52:41.7 -05:21:41  5.6  2.61 151
PPM 186300     03:53:26.6 -08:00:54  8.1  0.45 148
PPM 186260     03:51:30.2 -08:08:30  9.2  0.19 149
14XB48         03:51:39.1 -07:57:23 14.2       149
Positions are for J2000

Event circumstances last updated at 2021/11/16 00:51:58 UT

Marc W. Buie, Southwest Research Institute

RECON