RECON: TNO occultation with 444030

Event between (444030) 04NT33 and star GA1120:16218228 with event index number of 2543796

Geocentric closest approach at 2028/12/05 16:09:10 UTC

J2000 position of star is 22:39:44.6 +23:32:35
Equinox of date position of star is 22:40:54.1 +23:40:11
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon. Moon is 86% illuminated.
Apparent brightness V=20.6

Object is 40.5 AU from the Sun and 40.4 AU from the Earth.
Apparent velocity is 15.6 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 118 seconds.
The 1-sigma cross-track error in the shadow position is 2036 km.

The object has an absolute magnitude Hv=4.4
Diameter=698.3 km assuming a 5% albedo -- 50.4 sec chord
Diameter=285.1 km assuming a 30% albedo -- 20.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 444030, (2028/12/05 16:09UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:25.1 +45:23:06  1.3 32.35 115
Scheat         23:05:10.8 +28:14:24  2.4  7.06 115
47Lam Peg      22:47:55.7 +23:43:07  3.9  1.56 121
PPM 114723     22:42:48.9 +23:59:54  6.9  0.49 122
PPM 114689     22:40:54.9 +23:44:32  9.5  0.07 122
444030         22:41:07.8 +23:41:40 16.6       122
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 444030, (2028/12/05 16:09UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 32.35 115
Scheat         23:03:46.8 +28:05:01  2.4  7.06 115
47Lam Peg      22:46:32.0 +23:33:56  3.9  1.56 121
PPM 114723     22:41:25.7 +23:50:47  6.9  0.49 122
PPM 114689     22:39:31.7 +23:35:27  9.5  0.07 122
444030         22:39:44.6 +23:32:35 16.6       122
Positions are for J2000

Event circumstances last updated at 2024/03/08 02:59:50 UT

Marc W. Buie, Southwest Research Institute

RECON