RECON: TNO occultation with 523766

Event between (523766) 14WF510 and star GA0880:00705704 with event index number of 2690254

Geocentric closest approach at 2029/02/18 04:21:23 UTC

J2000 position of star is 05:33:43.2 -01:19:11
Equinox of date position of star is 05:34:56.1 -01:18:17
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 66 degrees from the moon. Moon is 19% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 32.9 AU from the Sun and 32.6 AU from the Earth.
Apparent velocity is 12.5 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 209 seconds.
The 1-sigma cross-track error in the shadow position is 2130 km.
The sky-plane scale is 23614.9 km/arcsec.

The object has an absolute magnitude Hv=7.0
Diameter=238.8 km assuming a 5% albedo -- 19.3 sec chord
Diameter=97.5 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523766, (2029/02/18 04:21UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:56.4 -08:10:13  0.1  8.38  64
34Del Ori      05:33:29.8 -00:16:48  2.2  1.11  66
PPM 175905     05:35:00.3 -01:08:17  5.0  0.17  66
PPM 175914     05:35:32.6 -01:27:10  7.8  0.17  66
PPM 175905     05:35:00.3 -01:08:17  5.0  0.17  66
523766         05:35:11.9 -01:18:06 16.2        67
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 4.3 sigma about the mid-time.
The median site spacing is 8.0 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:25:20 -36.7 Dark Up 32.5 210.6 Up 04:10:20 - 04:40:20 11146
Dunrhomin 04:24:01 -42.8 Dark Up 42.2 216.0 Up 04:09:01 - 04:39:01 10978
Nikitin 04:23:54 -42.8 Dark Up 42.4 216.1 Up 04:08:54 - 04:38:54 10972
CU-SBO 04:23:57 -42.8 Dark Up 42.5 216.0 Up 04:08:57 - 04:38:57 10966
Kelowna 04:25:50 -30.1 Dark Up 37.8 195.2 Up 04:10:50 - 04:40:50 10386
Penticton 04:25:50 -30.2 Dark Up 38.1 195.2 Up 04:10:50 - 04:40:50 10372
Anarchist Mountain Observatory 04:25:46 -30.4 Dark Up 38.6 195.5 Up 04:10:46 - 04:40:46 10368
Summerland 04:25:51 -30.1 Dark Up 38.1 195.0 Up 04:10:51 - 04:40:51 10367
Peachland 04:25:52 -30.0 Dark Up 38.0 194.9 Up 04:10:52 - 04:40:52 10366
Oliver 04:25:46 -30.3 Dark Up 38.5 195.2 Up 04:10:46 - 04:40:46 10361
Kamloops 04:25:57 -29.3 Dark Up 37.1 194.0 Up 04:10:57 - 04:40:57 10359
Okanogan 04:25:44 -30.5 Dark Up 39.3 195.4 Up 04:10:44 - 04:40:44 10336
George/Scottsdale 04:23:39 -39.9 Dark Up 50.6 211.0 Up 04:08:39 - 04:38:39 10328
Brewster 04:25:41 -30.5 Dark Up 39.6 195.2 Up 04:10:41 - 04:40:41 10316
PNWRO 04:25:29 -31.6 Dark Up 41.4 196.7 Up 04:10:29 - 04:40:29 10304
Manson/Chelan 04:25:41 -30.3 Dark Up 39.8 194.7 Up 04:10:41 - 04:40:41 10288
Wenatchee 04:25:39 -30.3 Dark Up 40.3 194.6 Up 04:10:39 - 04:40:39 10263
Patrick 04:23:58 -37.9 Dark Up 49.9 207.2 Up 04:08:58 - 04:38:58 10255
Ellensburg 04:25:39 -30.3 Dark Up 40.8 194.4 Up 04:10:39 - 04:40:39 10236
Toppenish/White Swan 04:25:35 -30.6 Dark Up 41.3 194.7 Up 04:10:35 - 04:40:35 10225
Yakima 04:25:36 -30.4 Dark Up 41.2 194.4 Up 04:10:36 - 04:40:36 10222
Laughlin/Bullhead City 04:24:01 -37.4 Dark Up 50.4 206.3 Up 04:09:01 - 04:39:01 10196
Lake Havasu City 04:23:54 -37.8 Dark Up 50.9 207.0 Up 04:08:54 - 04:38:54 10187
The Dalles 04:25:29 -30.2 Dark Up 42.2 193.8 Up 04:10:29 - 04:40:29 10150
Maupin 04:25:32 -30.4 Dark Up 42.6 194.1 Up 04:10:32 - 04:40:32 10142
Victoria 04:25:58 -28.1 Dark Up 39.7 190.5 Up 04:10:58 - 04:40:58 10118
Beatty 04:24:22 -35.4 Dark Up 49.5 202.4 Up 04:09:22 - 04:39:22 10115
Yuma 04:23:43 -37.9 Dark Up 52.7 207.6 Up 04:08:43 - 04:38:43 10090
Bend 04:25:22 -30.5 Dark Up 43.7 193.9 Up 04:10:22 - 04:40:22 10088
Sisters 04:25:28 -30.3 Dark Up 43.6 193.6 Up 04:10:28 - 04:40:28 10080
Oregon Observatory 04:25:24 -30.5 Dark Up 43.9 193.8 Up 04:10:24 - 04:40:24 10073
Cedarville 04:25:03 -31.9 Dark Up 46.0 196.1 Up 04:10:03 - 04:40:03 10067
Hawthorne 04:24:41 -33.6 Dark Up 48.5 199.1 Up 04:09:41 - 04:39:41 10052
Calipatria 04:23:50 -37.1 Dark Up 52.6 206.0 Up 04:08:50 - 04:38:50 10045
Yerington 04:24:45 -33.1 Dark Up 48.2 198.2 Up 04:09:45 - 04:39:45 10035
Bishop 04:24:32 -34.0 Dark Up 49.6 199.9 Up 04:09:32 - 04:39:32 10021
Reno 04:24:50 -32.5 Dark Up 47.8 197.1 Up 04:09:50 - 04:39:50 10012
Carson City 04:24:49 -32.6 Dark Up 48.2 197.2 Up 04:09:49 - 04:39:49 10000
Chiloquin 04:25:15 -30.4 Dark Up 45.3 193.5 Up 04:10:15 - 04:40:15 9997
Lee Vining 04:24:39 -33.4 Dark Up 49.2 198.6 Up 04:09:39 - 04:39:39 9996
Gardnerville 04:24:49 -32.7 Dark Up 48.4 197.4 Up 04:09:49 - 04:39:49 9993
Klamath Falls 04:25:14 -30.6 Dark Up 45.6 193.7 Up 04:10:14 - 04:40:14 9989
Idyllwild 04:24:03 -36.0 Dark Up 52.5 203.9 Up 04:09:03 - 04:39:03 9987
Portola 04:24:56 -32.0 Dark Up 47.7 196.1 Up 04:09:56 - 04:39:56 9980
Fall River/Burney 04:25:04 -31.1 Dark Up 46.7 194.5 Up 04:10:04 - 04:40:04 9967
Gimple 04:25:00 -31.7 Dark Up 47.5 195.4 Up 04:10:00 - 04:40:00 9966
Greenville 04:24:57 -31.6 Dark Up 47.5 195.3 Up 04:09:57 - 04:39:57 9960
Quincy 04:24:57 -31.6 Dark Up 47.7 195.4 Up 04:09:57 - 04:39:57 9952
Wildwood 04:24:09 -34.4 Dark Up 52.7 200.8 Up 04:09:09 - 04:39:09 9867

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 523766, (2029/02/18 04:21UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  8.38  64
34Del Ori      05:32:00.4 -00:17:57  2.2  1.11  66
PPM 175905     05:33:31.5 -01:09:22  5.0  0.17  66
PPM 175914     05:34:04.0 -01:28:14  7.8  0.17  66
PPM 175905     05:33:31.5 -01:09:22  5.0  0.17  66
523766         05:33:43.2 -01:19:11 16.2        66
Positions are for J2000

Event circumstances last updated at 2023/12/10 04:30:12 UT

Marc W. Buie, Southwest Research Institute

RECON