RECON: TNO occultation with 523749

Event between (523749) 14UR224 and star GA1080:01280895 with event index number of 2372848

Geocentric closest approach at 2028/11/16 10:33:03 UTC

J2000 position of star is 05:43:24.4 +19:25:26
Equinox of date position of star is 05:44:49.5 +19:25:59
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 39.3 AU from the Sun and 38.4 AU from the Earth.
Apparent velocity is 20.7 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 150 seconds.
The 1-sigma cross-track error in the shadow position is 1728 km.
The sky-plane scale is 27874.2 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 22.5 sec chord
Diameter=186.6 km assuming a 30% albedo -- 9.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523749, (2028/11/16 10:31UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:44.2 +07:24:36  0.4 12.35 139
Alnath         05:28:07.2 +28:37:45  1.6  9.98 151
PPM 121513     05:54:06.1 +19:52:22  6.4  2.16 144
PPM 121323     05:45:15.6 +19:33:05  8.5  0.12 146
523749         05:45:06.8 +19:26:05 13.9       146
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 35.7 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 10:31:32 -35.7 Dark Down 53.1 216.2 Up 10:18:30 - 10:44:34 10989
Kamloops 10:32:18 -44.4 Dark Down 58.1 194.2 Up 10:19:16 - 10:45:20 10889
Kelowna 10:32:15 -44.3 Dark Down 58.8 196.1 Up 10:19:13 - 10:45:17 10806
Peachland 10:32:17 -44.5 Dark Down 58.9 195.6 Up 10:19:15 - 10:45:19 10797
Summerland 10:32:16 -44.5 Dark Down 59.1 195.9 Up 10:19:14 - 10:45:18 10782
Penticton 10:32:17 -44.5 Dark Down 59.1 196.1 Up 10:19:15 - 10:45:19 10775
Oliver 10:32:16 -44.6 Dark Down 59.4 196.3 Up 10:19:14 - 10:45:18 10741
Anarchist Mountain Observatory 10:32:15 -44.6 Dark Down 59.6 196.7 Up 10:19:13 - 10:45:17 10723
Victoria 10:32:30 -47.2 Dark Down 60.6 189.4 Up 10:19:28 - 10:45:32 10700
Okanogan 10:32:16 -45.0 Dark Down 60.2 196.6 Up 10:19:14 - 10:45:18 10661
Brewster 10:32:15 -45.3 Dark Down 60.5 196.4 Up 10:19:13 - 10:45:17 10636
Manson/Chelan 10:32:19 -45.6 Dark Down 60.8 195.8 Up 10:19:17 - 10:45:21 10618
Wenatchee 10:32:18 -45.9 Dark Down 61.3 195.7 Up 10:19:16 - 10:45:20 10572
Ellensburg 10:32:20 -46.2 Dark Down 61.7 195.5 Up 10:19:18 - 10:45:22 10532
Yakima 10:32:19 -46.4 Dark Down 62.1 195.6 Up 10:19:17 - 10:45:21 10492
Toppenish/White Swan 10:32:20 -46.4 Dark Down 62.3 196.1 Up 10:19:18 - 10:45:22 10470
PNWRO 10:32:13 -45.6 Dark Down 62.3 199.2 Up 10:19:11 - 10:45:15 10425
The Dalles 10:32:22 -47.2 Dark Down 63.2 194.9 Up 10:19:20 - 10:45:24 10397
Maupin 10:32:21 -47.3 Dark Down 63.6 195.4 Up 10:19:19 - 10:45:23 10354
Sisters 10:32:23 -48.0 Dark Down 64.5 194.8 Up 10:19:21 - 10:45:25 10269
Bend 10:32:23 -47.9 Dark Down 64.7 195.5 Up 10:19:21 - 10:45:25 10243
Oregon Observatory 10:32:24 -48.0 Dark Down 64.9 195.3 Up 10:19:22 - 10:45:26 10227
Chiloquin 10:32:25 -48.8 Dark Down 66.2 195.1 Up 10:19:23 - 10:45:27 10096
Klamath Falls 10:32:25 -48.9 Dark Down 66.5 195.5 Up 10:19:23 - 10:45:27 10060
Cedarville 10:32:19 -48.1 Dark Down 66.9 199.7 Up 10:19:17 - 10:45:21 9978
Fall River/Burney 10:32:23 -49.1 Dark Down 67.6 197.2 Up 10:19:21 - 10:45:25 9936
Greenville 10:32:22 -49.1 Dark Down 68.4 199.0 Up 10:19:20 - 10:45:24 9839
Gimple 10:32:22 -49.0 Dark Down 68.3 199.2 Up 10:19:20 - 10:45:24 9838
Quincy 10:32:22 -49.1 Dark Down 68.5 199.2 Up 10:19:20 - 10:45:24 9818
Dunrhomin 10:31:20 -37.5 Dark Down 61.4 229.9 Up 10:18:18 - 10:44:22 9806
Portola 10:32:21 -48.8 Dark Down 68.5 200.4 Up 10:19:19 - 10:45:23 9802
Nikitin 10:31:20 -37.5 Dark Down 61.6 230.2 Up 10:18:18 - 10:44:22 9787
CU-SBO 10:31:19 -37.6 Dark Down 61.6 230.1 Up 10:18:17 - 10:44:21 9780
Reno 10:32:17 -48.4 Dark Down 68.6 202.3 Up 10:19:15 - 10:45:19 9770
Carson City 10:32:17 -48.5 Dark Down 68.9 202.7 Up 10:19:15 - 10:45:19 9732
Yerington 10:32:15 -48.1 Dark Down 68.9 204.4 Up 10:19:13 - 10:45:17 9708
Gardnerville 10:32:17 -48.6 Dark Down 69.1 203.0 Up 10:19:15 - 10:45:19 9706
Hawthorne 10:32:13 -47.8 Dark Down 69.2 206.2 Up 10:19:11 - 10:45:15 9656
Lee Vining 10:32:14 -48.4 Dark Down 69.8 205.7 Up 10:19:12 - 10:45:16 9599
Bishop 10:32:12 -48.0 Dark Down 70.1 208.2 Up 10:19:10 - 10:45:14 9532
Beatty 10:32:05 -46.8 Dark Down 69.9 212.9 Up 10:19:03 - 10:45:07 9474
Patrick 10:31:52 -44.8 Dark Down 69.7 222.0 Up 10:18:50 - 10:44:54 9303
Laughlin/Bullhead City 10:31:56 -45.4 Dark Down 70.2 220.8 Up 10:18:54 - 10:44:58 9279
Lake Havasu City 10:31:55 -45.3 Dark Down 70.6 222.7 Up 10:18:53 - 10:44:57 9206
Wildwood 10:32:13 -48.8 Dark Down 73.0 212.7 Up 10:19:11 - 10:45:15 9184
Idyllwild 10:32:05 -47.3 Dark Down 72.4 218.4 Up 10:19:03 - 10:45:07 9135
George/Scottsdale 10:31:44 -43.4 Dark Down 69.7 229.4 Up 10:18:42 - 10:44:46 9114
Calipatria 10:32:00 -46.5 Dark Down 72.2 222.6 Up 10:18:58 - 10:45:02 9063
Yuma 10:31:54 -45.8 Dark Down 72.0 225.7 Up 10:18:52 - 10:44:56 9012

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 523749, (2028/11/16 10:31UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 12.35 139
Alnath         05:26:17.6 +28:36:23  1.6  9.98 151
PPM 121513     05:52:23.4 +19:52:04  6.4  2.16 144
PPM 121323     05:43:33.2 +19:32:25  8.5  0.12 146
523749         05:43:24.4 +19:25:26 13.9       146
Positions are for J2000

Event circumstances last updated at 2023/12/24 04:44:05 UT

Marc W. Buie, Southwest Research Institute

RECON