RECON: TNO occultation with 00YE2

Event between 00YE2 and star UC4-555-015969 with event index number of 107625

Geocentric closest approach at 2018/03/25 17:29:46 UTC

J2000 position of star is 05:30:04.2 +20:49:04
Equinox of date position of star is 05:31:06.3 +20:49:48
Stellar brightness R=15.6, use SENSEUP=128
Star is 26 degrees from the moon. Moon is 62% illuminated.
TNO apparent brightness V=24.3

TNO is 38.4 AU from the Sun and 38.6 AU from the Earth.
The TNO is moving 10.9 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 1088 seconds.
The 1-sigma cross-track error in the shadow position is 5763 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.7 km assuming a 5% albedo -- 12.3 sec chord
Diameter=54.6 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 00YE2, (2018/03/25 17:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:58.1 +16:32:40  0.8 13.52  39
Alnath         05:27:26.7 +28:37:16  1.6  7.84  28
PPM 094484     05:34:43.9 +20:29:08  6.0  0.90  25
PPM 094420     05:31:20.2 +20:33:51  7.1  0.27  26
PPM 094399     05:30:07.7 +20:53:34  9.8  0.25  26
00YE2          05:31:09.4 +20:49:51 15.6        26
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 00YE2, (2018/03/25 17:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.52  39
Alnath         05:26:17.5 +28:36:24  1.6  7.84  28
PPM 094484     05:33:38.8 +20:28:27  6.0  0.90  25
PPM 094420     05:30:15.0 +20:33:05  7.1  0.27  26
PPM 094399     05:29:02.5 +20:52:46  9.8  0.25  26
00YE2          05:30:04.2 +20:49:04 15.6        26
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:34:20 UT

Marc W. Buie, Southwest Research Institute

RECON