RECON: TNO occultation with 160091

Event between (160091) 00OL67 and star GA0920:00032470 with event index number of 1671450

Geocentric closest approach at 2024/10/11 21:43:34 UTC

J2000 position of star is 00:21:04.0 +03:48:39
Equinox of date position of star is 00:22:17.9 +03:56:37
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 64 degrees from the moon. Moon is 62% illuminated.
Apparent brightness V=23.5

Object is 44.6 AU from the Sun and 43.7 AU from the Earth.
Apparent velocity is 24.6 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 184 seconds.
The 1-sigma cross-track error in the shadow position is 3177 km.

The object has an absolute magnitude Hv=7.0
Diameter=244.4 km assuming a 5% albedo -- 9.9 sec chord
Diameter=99.8 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 160091, (2024/10/11 21:50UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:00.8 -29:29:25  1.2 38.95  34
Algenib        00:14:30.9 +15:19:16  2.8 11.53  68
44 Psc         00:26:40.5 +02:04:36  5.8  2.16  64
PPM 143392     00:21:38.1 +04:54:59  8.5  0.98  64
PPM 143400     00:21:59.9 +03:35:12  9.2  0.37  63
160091         00:22:20.4 +03:56:53 16.7        64
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 160091, (2024/10/11 21:50UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 38.95  34
Algenib        00:13:14.2 +15:11:01  2.8 11.53  68
44 Psc         00:25:24.2 +01:56:22  5.8  2.16  64
PPM 143392     00:20:21.6 +04:46:44  8.5  0.98  64
PPM 143400     00:20:43.6 +03:26:58  9.2  0.37  63
160091         00:21:04.0 +03:48:39 16.7        64
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:48:42 UT

Marc W. Buie, Southwest Research Institute

RECON