RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star GA1260:02015127 with event index number of 284294

Geocentric closest approach at 2020/08/24 02:05:12 UTC

J2000 position of star is 05:24:50.0 +37:22:47
Equinox of date position of star is 05:26:12.5 +37:23:48
Stellar brightness G=12.6, use SENSEUP=16
Star is 134 degrees from the moon. Moon is 32% illuminated.
TNO apparent brightness V=22.6

TNO is 16.7 AU from the Sun and 17.0 AU from the Earth.
The TNO is moving 16.7 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 130 seconds.
The 1-sigma cross-track error in the shadow position is 1474 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=75.9 km assuming a 5% albedo -- 3.6 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 248835, (2020/08/24 02:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:06.5 +16:32:57  0.8 23.49 150
3Iot Aur       04:58:20.5 +33:11:49  2.7  7.07 140
21Sig Aur      05:26:03.5 +37:24:09  6.4  0.04 134
248835         05:26:14.3 +37:23:49 12.6       133
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 248835, (2020/08/24 02:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 23.49 150
3Iot Aur       04:56:59.6 +33:09:58  2.7  7.07 140
21Sig Aur      05:24:39.2 +37:23:07  6.4  0.04 134
248835         05:24:50.0 +37:22:47 12.6       133
Positions are for J2000

Event circumstances last updated at 2020/03/16 22:03:49 UT

Marc W. Buie, Southwest Research Institute

RECON