RECON: TNO occultation with 136108

Event between (136108) Haumea and star GA1040:03744080 with event index number of 2039185

Geocentric closest approach at 2027/07/29 13:59:01 UTC

J2000 position of star is 14:40:58.5 +14:02:56
Equinox of date position of star is 14:42:08.4 +13:56:43
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 130 degrees from the moon. Moon is 20% illuminated.
Apparent brightness V=17.3

Object is 49.7 AU from the Sun and 49.7 AU from the Earth.
Apparent velocity is 14.9 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 121 seconds.
The 1-sigma cross-track error in the shadow position is 1847 km.

The object has an absolute magnitude Hv=0.2
Diameter=5420.2 km assuming a 5% albedo -- 369.6 sec chord
Diameter=2212.8 km assuming a 30% albedo -- 150.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 136108, (2027/07/29 13:58UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:55.7 +19:02:36  0.0  7.94 122
Unukalhai      15:45:37.7 +06:20:26  2.6 17.33 144
PPM 130765     14:42:01.6 +13:25:02  6.0  0.52 130
PPM 130758     14:41:29.5 +13:44:22  9.7  0.27 130
136108         14:42:17.3 +13:55:55 15.7       130
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 136108, (2027/07/29 13:58UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.0 +19:10:14  0.0  7.94 122
Unukalhai      15:44:16.3 +06:25:33  2.6 17.33 144
PPM 130765     14:40:42.5 +13:32:03  6.0  0.52 130
PPM 130758     14:40:10.5 +13:51:24  9.7  0.27 130
136108         14:40:58.5 +14:02:56 15.7       130
Positions are for J2000

Event circumstances last updated at 2024/06/10 01:53:37 UT

Marc W. Buie, Southwest Research Institute

RECON