RECON: TNO occultation with 14YD50

Event between 14YD50 and star GA0960:03473844 with event index number of 2574495

Geocentric closest approach at 2023/03/02 14:46:17 UTC

J2000 position of star is 08:58:51.7 +06:02:42
Equinox of date position of star is 09:00:05.1 +05:57:16
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 31 degrees from the moon. Moon is 79% illuminated.
Apparent brightness V=21.9

Object is 33.6 AU from the Sun and 32.7 AU from the Earth.
Apparent velocity is 20.7 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 75 seconds.
The 1-sigma cross-track error in the shadow position is 1284 km.

The object has an absolute magnitude Hv=6.6
Diameter=279.3 km assuming a 5% albedo -- 13.7 sec chord
Diameter=114.0 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14YD50, (2023/03/02 14:46UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:36.2 +11:51:11  1.3 18.15  42
Alphard        09:28:43.6 -08:45:36  2.0 16.35  47
16Zet Hya      08:56:37.0 +05:51:22  3.1  0.87  31
PPM 155220     08:57:46.5 +06:34:09  7.9  0.84  31
PPM 155278     09:00:32.9 +05:39:08  8.6  0.32  32
PPM 155262     08:59:38.1 +05:55:42 11.9  0.12  31
14YD50         09:00:05.3 +05:57:15 14.2        32
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 14YD50, (2023/03/02 14:46UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 18.15  42
Alphard        09:27:35.2 -08:39:30  2.0 16.35  47
16Zet Hya      08:55:23.5 +05:56:44  3.1  0.87  31
PPM 155220     08:56:32.7 +06:39:33  7.9  0.84  31
PPM 155278     08:59:19.5 +05:44:36  8.6  0.32  32
PPM 155262     08:58:24.5 +06:01:09 11.9  0.12  31
14YD50         08:58:51.7 +06:02:42 14.2        31
Positions are for J2000

Event circumstances last updated at 2023/02/10 03:58:44 UT

Marc W. Buie, Southwest Research Institute

RECON