RECON: TNO occultation with 84719

Event between (84719) 02VR128 and star GA1220:01107250 with event index number of 2404887

Geocentric closest approach at 2028/08/28 14:47:30 UTC

J2000 position of star is 04:35:17.2 +32:31:14
Equinox of date position of star is 04:36:50.2 +32:34:06
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 66% illuminated.
Apparent brightness V=21.6

Object is 42.3 AU from the Sun and 42.4 AU from the Earth.
Apparent velocity is 9.3 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 289 seconds.
The 1-sigma cross-track error in the shadow position is 2581 km.

The object has an absolute magnitude Hv=5.2
Diameter=532.1 km assuming a 5% albedo -- 57.9 sec chord
Diameter=217.2 km assuming a 30% albedo -- 23.7 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 84719, (2028/08/28 14:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.1 +16:33:53  0.8 16.01 163
3Iot Aur       04:58:51.9 +33:12:31  2.7  4.60 169
PPM 069458     04:32:29.1 +32:31:04  6.2  0.98 164
PPM 069521     04:37:22.2 +33:19:45  8.4  0.75 165
PPM 069523     04:37:26.5 +32:38:11  8.7  0.09 165
84719          04:37:08.1 +32:34:39 15.9       166
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 84719, (2028/08/28 14:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 16.01 163
3Iot Aur       04:56:59.6 +33:09:58  2.7  4.60 169
PPM 069458     04:30:38.4 +32:27:28  6.2  0.98 164
PPM 069521     04:35:30.5 +33:16:20  8.4  0.75 165
PPM 069523     04:35:35.5 +32:34:47  8.7  0.09 165
84719          04:35:17.2 +32:31:14 15.9       165
Positions are for J2000

Event circumstances last updated at 2024/01/09 22:27:25 UT

Marc W. Buie, Southwest Research Institute

RECON