RECON: TNO occultation with 449097

Event between (449097) 12UT68 and star GA1220:03375176 with event index number of 2289320

Geocentric closest approach at 2024/05/05 12:13:58 UTC

J2000 position of star is 08:59:51.6 +33:01:36
Equinox of date position of star is 09:01:21.2 +32:55:50
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 118 degrees from the moon. Moon is 10% illuminated.
Apparent brightness V=22.0

Object is 16.5 AU from the Sun and 16.6 AU from the Earth.
Apparent velocity is 13.3 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 56 seconds.
The 1-sigma cross-track error in the shadow position is 809 km.

The object has an absolute magnitude Hv=9.5
Diameter=76.9 km assuming a 5% albedo -- 5.8 sec chord
Diameter=31.4 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 449097, (2024/05/05 12:14UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:48.3 +27:57:55  1.1 16.79 104
66 Cnc         09:02:53.3 +32:09:21  5.9  0.84 118
PPM 074111     08:58:09.5 +33:09:47  7.6  0.71 117
PPM 074133     08:59:50.6 +33:05:59  9.6  0.36 117
449097         09:01:21.3 +32:55:50 15.9       118
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 449097, (2024/05/05 12:14UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 16.79 104
66 Cnc         09:01:24.1 +32:15:09  5.9  0.84 118
PPM 074111     08:56:39.4 +33:15:28  7.6  0.71 117
PPM 074133     08:58:20.7 +33:11:42  9.6  0.36 117
449097         08:59:51.6 +33:01:36 15.9       117
Positions are for J2000

Event circumstances last updated at 2024/04/22 03:54:58 UT

Marc W. Buie, Southwest Research Institute

RECON