RECON: TNO occultation with 07VJ305

Event between 07VJ305 and star UC4-510-002581 with event index number of 152634

Geocentric closest approach at 2018/02/08 06:56:14 UTC

J2000 position of star is 01:43:57.5 +11:59:22
Equinox of date position of star is 01:44:54.9 +12:04:44
Stellar brightness R=15.2, use SENSEUP=128
Star is 151 degrees from the moon. Moon is 44% illuminated.
TNO apparent brightness V=22.6

TNO is 37.0 AU from the Sun and 37.4 AU from the Earth.
The TNO is moving 16.8 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 375 seconds.
The 1-sigma cross-track error in the shadow position is 4976 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=278.0 km assuming a 5% albedo -- 16.6 sec chord
Diameter=113.5 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 07VJ305, (2018/02/08 06:56UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.7 +16:32:39  0.8 41.84 167
6Bet Ari       01:55:38.6 +20:53:45  2.6  9.18 154
102Pi Psc      01:38:03.7 +12:14:01  5.6  1.68 150
PPM 117669     01:48:06.9 +10:56:02  7.2  1.39 152
PPM 117624     01:44:58.4 +11:48:26  8.8  0.27 151
PPM 117630     01:45:24.6 +12:13:55 10.5  0.19 151
07VJ305        01:44:55.4 +12:04:47 15.2       152
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 07VJ305, (2018/02/08 06:56UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 41.84 167
6Bet Ari       01:54:38.5 +20:48:27  2.6  9.18 154
102Pi Psc      01:37:05.8 +12:08:31  5.6  1.68 150
PPM 117669     01:47:09.1 +10:50:38  7.2  1.39 152
PPM 117624     01:44:00.5 +11:43:01  8.8  0.27 151
PPM 117630     01:44:26.7 +12:08:29 10.5  0.19 151
07VJ305        01:43:57.5 +11:59:22 15.2       151
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:15:04 UT

Marc W. Buie, Southwest Research Institute

RECON