RECON: TNO occultation with 84719

Event between (84719) 02VR128 and star GA1200:00756477 with event index number of 2404732

Geocentric closest approach at 2024/12/22 22:09:21 UTC

J2000 position of star is 04:05:40.3 +30:52:36
Equinox of date position of star is 04:07:11.1 +30:56:25
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 50% illuminated.
Apparent brightness V=21.4

Object is 41.4 AU from the Sun and 40.5 AU from the Earth.
Apparent velocity is 22.9 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is 1608 km.

The object has an absolute magnitude Hv=5.2
Diameter=532.1 km assuming a 5% albedo -- 23.5 sec chord
Diameter=217.2 km assuming a 30% albedo -- 9.6 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 84719, (2024/12/22 22:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.4 +16:33:27  0.8 15.94 112
44Zet Per      03:55:42.5 +31:57:21  2.8  2.66 118
PPM 069071     04:06:18.6 +32:38:15  6.5  1.71 115
PPM 069034     04:03:58.6 +31:23:51  8.5  0.83 116
PPM 069069     04:06:12.9 +30:57:03  9.6  0.22 116
84719          04:07:14.7 +30:56:34 14.8       115
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, (2024/12/22 22:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 15.94 112
44Zet Per      03:54:07.9 +31:53:01  2.8  2.66 118
PPM 069071     04:04:43.1 +32:34:16  6.5  1.71 115
PPM 069034     04:02:24.0 +31:19:46  8.5  0.83 116
PPM 069069     04:04:38.5 +30:53:03  9.6  0.22 116
84719          04:05:40.3 +30:52:36 14.8       116
Positions are for J2000

Event circumstances last updated at 2024/01/08 05:11:02 UT

Marc W. Buie, Southwest Research Institute

RECON