RECON: TNO occultation with 523746

Event between (523746) 14UT114 and star GA1200:02795436 with event index number of 2323059

Geocentric closest approach at 2024/05/01 04:29:28 UTC

J2000 position of star is 06:53:09.8 +31:31:54
Equinox of date position of star is 06:54:42.8 +31:30:02
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 53% illuminated.
Apparent brightness V=21.3

[RECON map]
Object is 16.4 AU from the Sun and 16.8 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 6.9 arcsec/hr.
The 1-sigma error in the time of the event is 33 seconds.
The 1-sigma cross-track error in the shadow position is 661 km.
The sky-plane scale is 12211.2 km/arcsec.

The object has an absolute magnitude Hv=8.8
Diameter=95.5 km assuming a 5% albedo -- 4.4 sec chord
Diameter=39.0 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523746, (2024/05/01 04:25UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:48.2 +27:57:56  1.1 11.83 166
34The Gem      06:54:23.5 +33:55:46  3.6  2.43 153
PPM 072165     06:52:55.9 +32:07:43  8.3  0.74 153
PPM 072199     06:54:38.8 +31:25:51  9.8  0.07 154
523746         06:54:44.1 +31:30:01 14.9       154
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 5.0 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.5 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 04:31:05 -15.3 AT Down 31.3 282.4 Up 04:27:50 - 04:34:20 8293
Dunrhomin 04:31:54 -25.0 Dark Down 27.4 289.4 Low 04:28:39 - 04:35:09 7818
Nikitin 04:31:55 -25.1 Dark Down 27.4 289.5 Low 04:28:40 - 04:35:10 7808
CU-SBO 04:31:55 -25.2 Dark Down 27.4 289.5 Low 04:28:40 - 04:35:10 7801
Kamloops 04:31:05 -10.1 NT Down 40.1 273.0 Up 04:27:50 - 04:34:20 7655
Kelowna 04:31:08 -11.0 NT Down 39.4 274.3 Up 04:27:53 - 04:34:23 7653
Peachland 04:31:09 -11.0 NT Down 39.6 274.2 Up 04:27:54 - 04:34:24 7635
Penticton 04:31:10 -11.2 NT Down 39.5 274.5 Up 04:27:55 - 04:34:25 7633
Summerland 04:31:10 -11.1 NT Down 39.5 274.4 Up 04:27:55 - 04:34:25 7631
Anarchist Mountain Observatory 04:31:12 -11.6 NT Down 39.3 275.1 Up 04:27:57 - 04:34:27 7615
Oliver 04:31:11 -11.4 NT Down 39.4 274.8 Up 04:27:56 - 04:34:26 7615
Okanogan 04:31:14 -11.9 NT Down 39.4 275.5 Up 04:27:59 - 04:34:29 7572
Brewster 04:31:16 -12.0 AT Down 39.5 275.5 Up 04:28:01 - 04:34:31 7549
Manson/Chelan 04:31:16 -12.0 NT Down 39.7 275.5 Up 04:28:01 - 04:34:31 7522
Wenatchee 04:31:18 -12.2 AT Down 39.8 275.7 Up 04:28:03 - 04:34:33 7489
PNWRO 04:31:25 -13.8 AT Down 38.6 277.9 Up 04:28:10 - 04:34:40 7479
Ellensburg 04:31:20 -12.3 AT Down 39.9 275.9 Up 04:28:05 - 04:34:35 7457
Yakima 04:31:21 -12.6 AT Down 39.8 276.3 Up 04:28:06 - 04:34:36 7434
Toppenish/White Swan 04:31:22 -12.8 AT Down 39.7 276.6 Up 04:28:07 - 04:34:37 7430
Victoria 04:31:11 -9.8 NT Down 41.9 272.6 Up 04:27:56 - 04:34:26 7412
The Dalles 04:31:25 -12.9 AT Down 40.1 276.7 Up 04:28:10 - 04:34:40 7350
Maupin 04:31:27 -13.2 AT Down 40.0 277.1 Up 04:28:12 - 04:34:42 7332
Sisters 04:31:29 -13.5 AT Down 40.2 277.6 Up 04:28:14 - 04:34:44 7259
Bend 04:31:32 -13.8 AT Down 40.0 277.9 Up 04:28:17 - 04:34:47 7257
Oregon Observatory 04:31:31 -13.8 AT Down 40.1 278.0 Up 04:28:16 - 04:34:46 7241
Cedarville 04:31:42 -16.0 AT Down 38.7 280.7 Up 04:28:27 - 04:34:57 7163
Chiloquin 04:31:37 -14.4 AT Down 40.2 278.9 Up 04:28:22 - 04:34:52 7143
Klamath Falls 04:31:38 -14.6 AT Down 40.1 279.2 Up 04:28:23 - 04:34:53 7126
Patrick 04:32:10 -23.8 Dark Down 32.3 288.0 Up 04:28:55 - 04:35:25 7110
George/Scottsdale 04:32:17 -26.2 Dark Down 30.2 289.8 Up 04:29:02 - 04:35:32 7110
Fall River/Burney 04:31:43 -15.6 AT Down 39.6 280.4 Up 04:28:28 - 04:34:58 7073
Reno 04:31:50 -17.4 AT Down 38.1 282.4 Up 04:28:35 - 04:35:05 7060
Yerington 04:31:53 -18.2 Dark Down 37.4 283.2 Up 04:28:38 - 04:35:08 7059
Laughlin/Bullhead City 04:32:10 -23.5 Dark Down 32.8 287.9 Up 04:28:55 - 04:35:25 7057
Hawthorne 04:31:55 -18.8 Dark Down 36.9 283.8 Up 04:28:40 - 04:35:10 7057
Beatty 04:32:03 -21.0 Dark Down 35.0 285.8 Up 04:28:48 - 04:35:18 7052
Portola 04:31:48 -16.9 AT Down 38.6 281.9 Up 04:28:33 - 04:35:03 7043
Gimple 04:31:46 -16.4 AT Down 39.0 281.4 Up 04:28:31 - 04:35:01 7043
Greenville 04:31:47 -16.4 AT Down 39.0 281.4 Up 04:28:32 - 04:35:02 7039
Carson City 04:31:51 -17.7 AT Down 38.0 282.7 Up 04:28:36 - 04:35:06 7038
Lake Havasu City 04:32:13 -24.1 Dark Down 32.4 288.4 Up 04:28:58 - 04:35:28 7028
Quincy 04:31:47 -16.5 AT Down 39.0 281.5 Up 04:28:32 - 04:35:02 7027
Gardnerville 04:31:52 -17.9 AT Down 37.9 282.9 Up 04:28:37 - 04:35:07 7026
Lee Vining 04:31:57 -18.9 Dark Down 37.1 284.0 Up 04:28:42 - 04:35:12 6997
Bishop 04:31:59 -19.7 Dark Down 36.4 284.7 Up 04:28:44 - 04:35:14 6996
Yuma 04:32:19 -25.1 Dark Down 32.0 289.4 Up 04:29:04 - 04:35:34 6894
Calipatria 04:32:17 -24.2 Dark Down 32.9 288.8 Up 04:29:02 - 04:35:32 6874
Idyllwild 04:32:14 -23.1 Dark Down 34.0 287.9 Up 04:28:59 - 04:35:29 6851
Wildwood 04:32:10 -21.6 Dark Down 35.7 287.0 Up 04:28:55 - 04:35:25 6772

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 523746, (2024/05/01 04:25UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 11.83 166
34The Gem      06:52:47.3 +33:57:39  3.6  2.43 153
PPM 072165     06:51:21.1 +32:09:33  8.3  0.74 153
PPM 072199     06:53:04.6 +31:27:45  9.8  0.07 154
523746         06:53:09.8 +31:31:54 14.9       154
Positions are for J2000

Event circumstances last updated at 2024/01/08 05:08:00 UT

Marc W. Buie, Southwest Research Institute

RECON