RECON: TNO occultation with 444030

Event between (444030) 04NT33 and star GA1120:16195715 with event index number of 2378407

Geocentric closest approach at 2027/10/20 17:18:29 UTC

J2000 position of star is 22:34:09.1 +23:47:41
Equinox of date position of star is 22:35:18.2 +23:55:12
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 98 degrees from the moon. Moon is 72% illuminated.
Apparent brightness V=20.5

Object is 40.3 AU from the Sun and 39.6 AU from the Earth.
Apparent velocity is 21.5 km/sec on the sky relative to the star, or, 2.7 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 1972 km.

The object has an absolute magnitude Hv=4.4
Diameter=698.3 km assuming a 5% albedo -- 36.7 sec chord
Diameter=285.1 km assuming a 30% albedo -- 15.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 444030, (2027/10/20 17:19UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:22.8 +45:22:51  1.3 31.33 100
Scheat         23:05:07.5 +28:14:02  2.4  7.92  90
47Lam Peg      22:47:52.4 +23:42:45  3.9  2.84  96
PPM 114532     22:33:12.7 +24:00:27  8.5  0.52  98
PPM 114551     22:34:00.1 +23:39:09  9.3  0.44  98
444030         22:35:28.6 +23:56:20 16.5        97
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, (2027/10/20 17:19UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 31.33 100
Scheat         23:03:46.8 +28:05:01  2.4  7.92  90
47Lam Peg      22:46:32.0 +23:33:56  3.9  2.84  96
PPM 114532     22:31:53.4 +23:51:50  8.5  0.52  98
PPM 114551     22:32:40.6 +23:30:31  9.3  0.44  98
444030         22:34:09.1 +23:47:41 16.5        98
Positions are for J2000

Event circumstances last updated at 2024/03/06 04:33:15 UT

Marc W. Buie, Southwest Research Institute

RECON