RECON: TNO occultation with 00CN105

Event between 00CN105 and star UC4-486-053360 with event index number of 76356

Geocentric closest approach at 2017/07/07 21:36:07 UTC

J2000 position of star is 11:16:50.1 +07:01:37
Equinox of date position of star is 11:17:44.3 +06:55:53
Stellar brightness R=12.9, use SENSEUP=32
Star is 104 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=21.8

TNO is 47.1 AU from the Sun and 47.6 AU from the Earth.
The TNO is moving 18.2 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 291 seconds.
The 1-sigma cross-track error in the shadow position is 4661 km.

The TNO has an absolute magnitude Hv=4.9
Diameter=619.5 km assuming a 5% albedo -- 34.1 sec chord
Diameter=252.9 km assuming a 30% albedo -- 13.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 00CN105, (2017/07/07 21:36UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:18.2 +11:52:51  1.3 17.58 122
Denebola       11:49:57.1 +14:28:27  2.1 10.93  99
77Sig Leo      11:22:02.4 +05:55:59  4.0  1.46 103
PPM 157766     11:21:56.9 +06:58:05  8.1  1.04 103
PPM 157662     11:16:07.8 +06:56:25  9.3  0.40 105
PPM 157701     11:18:31.5 +06:53:09 11.1  0.20 104
00CN105        11:17:44.5 +06:55:52 12.9       104
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 00CN105, (2017/07/07 21:36UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 17.58 122
Denebola       11:49:03.0 +14:34:17  2.1 10.93  99
77Sig Leo      11:21:08.1 +06:01:45  4.0  1.46 103
PPM 157766     11:21:02.6 +07:03:51  8.1  1.04 103
PPM 157662     11:15:13.4 +07:02:09  9.3  0.40 105
PPM 157701     11:17:37.1 +06:58:54 11.1  0.20 104
00CN105        11:16:50.1 +07:01:37 12.9       104
Positions are for J2000

Event circumstances last updated at 2017/06/14 16:58:03 UT

Marc W. Buie, Southwest Research Institute

RECON