RECON: TNO occultation with 10TV191

Event between 10TV191 and star UC4-515-008128 with event index number of 167595

Geocentric closest approach at 2018/11/26 17:26:42 UTC

J2000 position of star is 04:36:04.9 +12:56:28
Equinox of date position of star is 04:37:01.9 +12:58:29
Stellar brightness R=13.1
Star is 42 degrees from the moon. Moon is 84% illuminated.
TNO apparent brightness V=22.4

TNO is 28.0 AU from the Sun and 27.0 AU from the Earth.
The TNO is moving 24.9 km/sec on the sky relative to the star, or, 4.6 arcsec/hr.
The 1-sigma error in the time of the event is 355 seconds.
The 1-sigma cross-track error in the shadow position is 1463 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=152.1 km assuming a 5% albedo -- 6.1 sec chord
Diameter=62.1 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10TV191, (2018/11/26 17:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.4 +16:32:45  0.8  3.57  41
Bellatrix      05:26:08.8 +06:21:55  1.6 13.76  34
90 Tau         04:39:13.0 +12:32:50  4.3  0.66  42
PPM 120021     04:34:50.4 +13:17:25  7.0  0.64  43
PPM 120031     04:35:29.4 +12:46:15  9.6  0.45  43
PPM 120053     04:36:40.6 +12:44:00 11.5  0.27  42
10TV191        04:37:08.5 +12:58:43 13.1        42
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 10TV191, (2018/11/26 17:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  3.57  41
Bellatrix      05:25:07.8 +06:20:59  1.6 13.76  34
90 Tau         04:38:09.6 +12:30:39  4.3  0.66  42
PPM 120021     04:33:46.7 +13:15:07  7.0  0.64  43
PPM 120031     04:34:25.9 +12:43:58  9.6  0.45  43
PPM 120053     04:35:37.1 +12:41:45 11.5  0.27  42
10TV191        04:36:04.9 +12:56:28 13.1        42
Positions are for J2000

Event circumstances last updated at 2016/12/12 17:39:10 UT

Marc W. Buie, Southwest Research Institute

RECON