RECON: TNO occultation with 35671

Event between (35671) 98SN165 and star GA1000:00180841 with event index number of 2438053

Geocentric closest approach at 2024/10/31 20:23:14 UTC

J2000 position of star is 02:03:34.7 +10:46:44
Equinox of date position of star is 02:04:51.5 +10:53:36
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 176 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=21.3

Object is 37.1 AU from the Sun and 36.1 AU from the Earth.
Apparent velocity is 24.9 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 64 seconds.
The 1-sigma cross-track error in the shadow position is 1353 km.

The object has an absolute magnitude Hv=5.6
Diameter=442.6 km assuming a 5% albedo -- 18.0 sec chord
Diameter=180.7 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 35671, (2024/10/31 20:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.9 +16:33:26  0.8 37.39 141
6Bet Ari       01:56:01.0 +20:55:42  2.6 10.26 173
PPM 117850     02:00:45.9 +12:24:51  6.1  1.82 178
PPM 117903     02:04:17.3 +11:08:14  7.5  0.28 176
PPM 117908     02:04:45.7 +11:08:08 11.1  0.24 176
35671          02:04:54.4 +10:53:51 16.9       176
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 35671, (2024/10/31 20:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 37.39 141
6Bet Ari       01:54:38.5 +20:48:26  2.6 10.26 173
PPM 117850     01:59:25.9 +12:17:40  6.1  1.82 178
PPM 117903     02:02:57.6 +11:01:07  7.5  0.28 176
PPM 117908     02:03:26.0 +11:01:02 11.1  0.24 176
35671          02:03:34.7 +10:46:44 16.9       176
Positions are for J2000

Event circumstances last updated at 2023/12/15 05:30:30 UT

Marc W. Buie, Southwest Research Institute

RECON