Event between (342842) 08YB3 and star GA1160:10038618 with event index number of 2204569
Geocentric closest approach at 2025/10/30 23:17:01 UTC
J2000 position of star is 19:41:29.9 +27:21:44
Equinox of date position of star is 19:42:29.1 +27:25:12
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 53 degrees from the moon.
Moon is 63% illuminated.
Apparent brightness V=21.8
Object is 15.9 AU from the Sun
and 15.9 AU from the Earth.
Apparent velocity is 27.6
km/sec on the sky relative to the star, or,
8.6 arcsec/hr.
The 1-sigma error in the time of the event is 65 seconds.
The 1-sigma cross-track error in the shadow position is
739 km.
The object has an absolute magnitude Hv=9.5
Diameter=82.8 km assuming a 5% albedo -- 2.8 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2025/10/30 23:20UT) Object RA Dec mag sep mel Vega 18:37:48.8 +38:48:31 0.0 17.65 70 53Eps Cyg 20:47:15.3 +34:04:04 2.5 15.38 52 10 Vul 19:44:47.4 +25:50:07 5.5 1.67 51 PPM 109550 19:43:36.0 +27:18:59 8.4 0.26 52 PPM 109537 19:43:10.3 +27:14:50 9.0 0.22 52 PPM 109496 19:42:00.1 +27:19:33 10.3 0.16 52 342842 19:42:33.1 +27:25:27 15.9 52 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 342842, (2025/10/30 23:20UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 17.65 70 53Eps Cyg 20:46:13.3 +33:58:20 2.5 15.38 52 10 Vul 19:43:42.9 +25:46:19 5.5 1.67 51 PPM 109550 19:42:32.6 +27:15:14 8.4 0.26 52 PPM 109537 19:42:06.9 +27:11:06 9.0 0.22 52 PPM 109496 19:40:56.8 +27:15:51 10.3 0.16 52 342842 19:41:29.9 +27:21:44 15.9 52 Positions are for J2000
Event circumstances last updated at 2024/03/03 06:05:00 UT
Marc W. Buie, Southwest Research Institute