RECON: TNO occultation with 11HO60

Event between 11HO60 and star GA0460:11355033 with event index number of 295500

Geocentric closest approach at 2020/02/29 02:44:03 UTC

J2000 position of star is 15:57:05.8 -42:05:37
Equinox of date position of star is 15:58:23.2 -42:08:49
Stellar brightness G=15.1, use SENSEUP=128
Star is 144 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=21.9

TNO is 36.9 AU from the Sun and 36.8 AU from the Earth.
The TNO is moving 12.4 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 247 seconds.
The 1-sigma cross-track error in the shadow position is 5243 km.

The TNO has an absolute magnitude Hv=6.1
Diameter=358.1 km assuming a 5% albedo -- 28.8 sec chord
Diameter=146.2 km assuming a 30% albedo -- 11.7 sec chord
Dynamical classification is 11:2EEEEEEEEE
 
 
 
 
 
 
 
 

Star training set for 11HO60, (2020/02/29 02:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:38.8 -26:28:30  0.9 17.00 149
Eta Lup        16:01:27.9 -38:27:09  2.8  3.74 146
PPM 321254     16:00:53.0 -41:48:02  5.0  0.57 144
PPM 321217     15:58:05.0 -42:22:50  8.4  0.24 144
11HO60         15:58:28.7 -42:09:02 15.1       143
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 11HO60, (2020/02/29 02:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.00 149
Eta Lup        16:00:07.3 -38:23:48  2.8  3.74 146
PPM 321254     15:59:30.2 -41:44:40  5.0  0.57 144
PPM 321217     15:56:41.9 -42:19:24  8.4  0.24 144
11HO60         15:57:05.8 -42:05:37 15.1       144
Positions are for J2000

Event circumstances last updated at 2018/10/26 20:47:10 UT

Marc W. Buie, Southwest Research Institute

RECON