RECON: TNO occultation with 529940

Event between (529940) 10TB192 and star GA1100:00409456 with event index number of 2443182

Geocentric closest approach at 2028/10/10 17:01:39 UTC

J2000 position of star is 03:35:29.8 +21:11:44
Equinox of date position of star is 03:36:53.4 +21:16:26
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 42 degrees from the moon. Moon is 59% illuminated.
Apparent brightness V=22.8

Object is 42.8 AU from the Sun and 42.0 AU from the Earth.
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 336 seconds.
The 1-sigma cross-track error in the shadow position is 3642 km.

The object has an absolute magnitude Hv=6.4
Diameter=310.5 km assuming a 5% albedo -- 16.6 sec chord
Diameter=126.7 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 529940, (2028/10/10 16:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.5 +16:33:54  0.8 15.04  29
44Zet Per      03:55:56.9 +31:58:00  2.8 11.47  36
PPM 092695     03:40:40.6 +21:00:26  6.4  0.86  41
PPM 092630     03:36:37.9 +21:06:42  9.8  0.22  42
529940         03:37:10.4 +21:17:23 13.4        41
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 529940, (2028/10/10 16:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 15.04  29
44Zet Per      03:54:07.9 +31:53:01  2.8 11.47  36
PPM 092695     03:39:00.1 +20:54:55  6.4  0.86  41
PPM 092630     03:34:57.5 +21:01:03  9.8  0.22  42
529940         03:35:29.8 +21:11:44 13.4        42
Positions are for J2000

Event circumstances last updated at 2023/12/03 04:24:16 UT

Marc W. Buie, Southwest Research Institute

RECON