RECON: TNO occultation with 523766

Event between (523766) 14WF510 and star GA0880:00757667 with event index number of 2717714

Geocentric closest approach at 2029/02/18 04:21:09 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 04:25:05 -36.7 Dark Up 32.5 210.5 Up 04:10:05 - 04:40:05 11140
Dunrhomin 04:23:48 -42.8 Dark Up 42.2 216.0 Up 04:08:48 - 04:38:48 10972
Nikitin 04:23:45 -42.8 Dark Up 42.4 216.0 Up 04:08:45 - 04:38:45 10965
CU-SBO 04:23:43 -42.8 Dark Up 42.5 215.9 Up 04:08:43 - 04:38:43 10959
Kelowna 04:25:35 -30.1 Dark Up 37.8 195.2 Up 04:10:35 - 04:40:35 10380
Penticton 04:25:35 -30.1 Dark Up 38.1 195.1 Up 04:10:35 - 04:40:35 10365
Anarchist Mountain Observatory 04:25:31 -30.4 Dark Up 38.6 195.4 Up 04:10:31 - 04:40:31 10362
Summerland 04:25:36 -30.0 Dark Up 38.1 195.0 Up 04:10:36 - 04:40:36 10361
Peachland 04:25:37 -29.9 Dark Up 38.0 194.8 Up 04:10:37 - 04:40:37 10360
Oliver 04:25:32 -30.2 Dark Up 38.5 195.2 Up 04:10:32 - 04:40:32 10355
Kamloops 04:25:42 -29.3 Dark Up 37.2 193.9 Up 04:10:42 - 04:40:42 10353
Okanogan 04:25:28 -30.5 Dark Up 39.3 195.3 Up 04:10:28 - 04:40:28 10329
George/Scottsdale 04:23:25 -39.8 Dark Up 50.7 210.9 Up 04:08:25 - 04:38:25 10321
Brewster 04:25:28 -30.4 Dark Up 39.6 195.1 Up 04:10:28 - 04:40:28 10309
PNWRO 04:25:12 -31.6 Dark Up 41.4 196.6 Up 04:10:12 - 04:40:12 10297
Manson/Chelan 04:25:29 -30.2 Dark Up 39.8 194.7 Up 04:10:29 - 04:40:29 10282
Wenatchee 04:25:27 -30.3 Dark Up 40.3 194.5 Up 04:10:27 - 04:40:27 10256
Patrick 04:23:48 -37.9 Dark Up 50.0 207.2 Up 04:08:48 - 04:38:48 10249
Ellensburg 04:25:23 -30.2 Dark Up 40.8 194.3 Up 04:10:23 - 04:40:23 10230
Toppenish/White Swan 04:25:18 -30.5 Dark Up 41.3 194.6 Up 04:10:18 - 04:40:18 10218
Yakima 04:25:18 -30.3 Dark Up 41.2 194.3 Up 04:10:18 - 04:40:18 10215
Laughlin/Bullhead City 04:23:46 -37.4 Dark Up 50.4 206.2 Up 04:08:46 - 04:38:46 10189
Lake Havasu City 04:23:42 -37.7 Dark Up 50.9 207.0 Up 04:08:42 - 04:38:42 10180
The Dalles 04:25:20 -30.2 Dark Up 42.2 193.7 Up 04:10:20 - 04:40:20 10144
Maupin 04:25:14 -30.4 Dark Up 42.6 193.9 Up 04:10:14 - 04:40:14 10136
Victoria 04:25:42 -28.0 Dark Up 39.7 190.4 Up 04:10:42 - 04:40:42 10111
Beatty 04:24:07 -35.3 Dark Up 49.6 202.3 Up 04:09:07 - 04:39:07 10108
Yuma 04:23:29 -37.8 Dark Up 52.7 207.5 Up 04:08:29 - 04:38:29 10083
Bend 04:25:07 -30.5 Dark Up 43.8 193.8 Up 04:10:07 - 04:40:07 10081
Sisters 04:25:13 -30.2 Dark Up 43.6 193.5 Up 04:10:13 - 04:40:13 10073
Oregon Observatory 04:25:09 -30.4 Dark Up 43.9 193.7 Up 04:10:09 - 04:40:09 10066
Cedarville 04:24:53 -31.8 Dark Up 46.0 196.0 Up 04:09:53 - 04:39:53 10060
Hawthorne 04:24:28 -33.6 Dark Up 48.5 199.0 Up 04:09:28 - 04:39:28 10045
Calipatria 04:23:38 -37.0 Dark Up 52.6 205.9 Up 04:08:38 - 04:38:38 10037
Yerington 04:24:31 -33.1 Dark Up 48.2 198.1 Up 04:09:31 - 04:39:31 10028
Bishop 04:24:18 -34.0 Dark Up 49.6 199.8 Up 04:09:18 - 04:39:18 10014
Reno 04:24:37 -32.5 Dark Up 47.8 197.0 Up 04:09:37 - 04:39:37 10005
Carson City 04:24:37 -32.6 Dark Up 48.2 197.2 Up 04:09:37 - 04:39:37 9993
Chiloquin 04:25:04 -30.4 Dark Up 45.3 193.4 Up 04:10:04 - 04:40:04 9990
Lee Vining 04:24:25 -33.3 Dark Up 49.2 198.5 Up 04:09:25 - 04:39:25 9989
Gardnerville 04:24:36 -32.7 Dark Up 48.4 197.3 Up 04:09:36 - 04:39:36 9986
Klamath Falls 04:25:03 -30.5 Dark Up 45.6 193.6 Up 04:10:03 - 04:40:03 9982
Idyllwild 04:23:46 -36.0 Dark Up 52.5 203.8 Up 04:08:46 - 04:38:46 9980
Portola 04:24:39 -32.0 Dark Up 47.7 196.0 Up 04:09:39 - 04:39:39 9973
Fall River/Burney 04:24:51 -31.0 Dark Up 46.7 194.4 Up 04:09:51 - 04:39:51 9960
Gimple 04:24:43 -31.6 Dark Up 47.5 195.3 Up 04:09:43 - 04:39:43 9959
Greenville 04:24:44 -31.5 Dark Up 47.5 195.2 Up 04:09:44 - 04:39:44 9953
Quincy 04:24:43 -31.6 Dark Up 47.7 195.3 Up 04:09:43 - 04:39:43 9945
Wildwood 04:23:59 -34.4 Dark Up 52.7 200.7 Up 04:08:59 - 04:38:59 9860

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 04:27:47 UT

Marc W. Buie, Southwest Research Institute

RECON