RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star GA1300:02059895 with event index number of 224340

Geocentric closest approach at 2019/11/30 15:38:34 UTC

J2000 position of star is 04:52:02.1 +40:22:55
Equinox of date position of star is 04:53:23.0 +40:24:48
Stellar brightness G=16.5, use SENSEUP=128
Star is 137 degrees from the moon. Moon is 18% illuminated.
TNO apparent brightness V=21.6

TNO is 16.2 AU from the Sun and 15.3 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 7.7 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 972 km.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 3.2 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 248835, (2019/11/30 15:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.9 +16:32:52  0.8 24.13 132
3Iot Aur       04:58:17.6 +33:11:45  2.7  7.28 138
PPM 047304     04:45:36.0 +40:49:19  6.0  1.54 135
PPM 047520     04:57:54.2 +40:11:56  8.0  0.88 137
PPM 047435     04:53:28.2 +40:33:57  8.9  0.15 137
248835         04:53:25.0 +40:24:51 16.5       137
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, (2019/11/30 15:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 24.13 132
3Iot Aur       04:56:59.6 +33:09:58  2.7  7.28 138
PPM 047304     04:44:13.0 +40:47:10  6.0  1.54 135
PPM 047520     04:56:31.4 +40:10:09  8.0  0.88 137
PPM 047435     04:52:05.2 +40:32:01  8.9  0.15 137
248835         04:52:02.1 +40:22:55 16.5       137
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:56:13 UT

Marc W. Buie, Southwest Research Institute

RECON