RECON: TNO occultation with 471335

Event between (471335) 11OD16 and star GA0960:00158468 with event index number of 2173923

Geocentric closest approach at 2027/10/29 14:00:41 UTC

J2000 position of star is 01:51:16.9 +06:38:42
Equinox of date position of star is 01:52:31.4 +06:45:41
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 168 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=21.8

Object is 19.7 AU from the Sun and 18.7 AU from the Earth.
Apparent velocity is 22.5 km/sec on the sky relative to the star, or, 6.0 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is 892 km.

The object has an absolute magnitude Hv=8.9
Diameter=100.0 km assuming a 5% albedo -- 4.5 sec chord
Diameter=40.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 471335, (2027/10/29 14:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.2 +16:33:48  0.8 41.42 145
68Omi Cet      02:20:45.3 -02:51:08  2.0 11.90 159
106Nu Psc      01:42:53.0 +05:37:39  4.4  2.71 166
PPM 145017     01:51:23.8 +07:21:37  7.8  0.67 168
PPM 145034     01:52:19.8 +06:39:53  9.0  0.16 168
471335         01:52:44.5 +06:46:54 16.6       168
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 471335, (2027/10/29 14:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 41.42 145
68Omi Cet      02:19:20.8 -02:58:45  2.0 11.90 159
106Nu Psc      01:41:25.9 +05:29:15  4.4  2.71 166
PPM 145017     01:49:56.0 +07:13:23  7.8  0.67 168
PPM 145034     01:50:52.2 +06:31:40  9.0  0.16 168
471335         01:51:16.9 +06:38:42 16.6       168
Positions are for J2000

Event circumstances last updated at 2023/09/03 04:35:29 UT

Marc W. Buie, Southwest Research Institute

RECON