RECON: TNO occultation with 523736

Event between (523736) 14QA442 and star GA0740:00191189 with event index number of 2372909

Geocentric closest approach at 2028/10/04 07:04:58 UTC

J2000 position of star is 02:31:20.2 -14:29:07
Equinox of date position of star is 02:32:28.9 -14:22:48
Stellar brightness G=10.3, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 35 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=20.7

[RECON map]
Object is 35.3 AU from the Sun and 34.4 AU from the Earth.
Apparent velocity is 23.2 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is 1770 km.
The sky-plane scale is 24961.6 km/arcsec.

The object has an absolute magnitude Hv=5.2
Diameter=508.2 km assuming a 5% albedo -- 23.7 sec chord
Diameter=207.5 km assuming a 30% albedo -- 9.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523736, (2028/10/04 07:13UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:55.3 -08:10:14  0.1 40.44  66
68Omi Cet      02:20:48.1 -02:50:53  2.0 11.88  25
76Sig Cet      02:33:27.1 -15:07:10  4.8  0.78  35
PPM 211698     02:35:23.8 -14:02:40  8.1  0.72  35
PPM 211628     02:32:42.6 -14:21:33  9.5  0.00  35
523736         02:32:42.6 -14:21:33 10.3        35
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 12.7 km RECON observability=0.7 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)
Victoria 07:04:48 -44.4 Dark Up 17.0 137.8 Really Low 06:57:08 - 07:12:27 9725
Kamloops 07:04:34 -42.9 Dark Up 16.6 141.0 Really Low 06:56:54 - 07:12:13 9713
Peachland 07:04:36 -43.9 Dark Up 17.6 141.3 Really Low 06:56:56 - 07:12:15 9685
Kelowna 07:04:34 -43.9 Dark Up 17.6 141.6 Really Low 06:56:55 - 07:12:14 9681
Summerland 07:04:35 -44.1 Dark Up 17.8 141.4 Really Low 06:56:56 - 07:12:15 9680
Penticton 07:04:36 -44.2 Dark Up 17.9 141.5 Really Low 06:56:56 - 07:12:15 9676
Oliver 07:04:37 -44.5 Dark Up 18.1 141.4 Really Low 06:56:57 - 07:12:16 9669
Anarchist Mountain Observatory 07:04:37 -44.7 Dark Up 18.3 141.6 Really Low 06:56:57 - 07:12:16 9662
Manson/Chelan 07:04:42 -45.7 Dark Up 18.9 140.6 Really Low 06:57:03 - 07:12:22 9652
Okanogan 07:04:39 -45.3 Dark Up 18.8 141.2 Really Low 06:57:00 - 07:12:19 9652
Brewster 07:04:41 -45.5 Dark Up 18.9 141.0 Really Low 06:57:01 - 07:12:20 9650
Wenatchee 07:04:44 -46.1 Dark Up 19.2 140.4 Really Low 06:57:05 - 07:12:24 9644
Ellensburg 07:04:46 -46.4 Dark Up 19.4 140.1 Really Low 06:57:06 - 07:12:25 9639
Yakima 07:04:47 -46.8 Dark Up 19.7 140.0 Really Low 06:57:08 - 07:12:27 9629
Toppenish/White Swan 07:04:48 -47.1 Dark Up 20.0 140.1 Really Low 06:57:08 - 07:12:27 9620
The Dalles 07:04:52 -47.6 Dark Up 20.2 139.2 Low 06:57:13 - 07:12:32 9615
Maupin 07:04:53 -48.1 Dark Up 20.6 139.2 Low 06:57:13 - 07:12:32 9602
Sisters 07:04:56 -48.8 Dark Up 21.0 138.5 Low 06:57:17 - 07:12:36 9587
PNWRO 07:04:45 -47.7 Dark Up 20.9 141.4 Low 06:57:05 - 07:12:24 9580
Bend 07:04:57 -49.1 Dark Up 21.3 138.7 Low 06:57:17 - 07:12:36 9575
Oregon Observatory 07:04:57 -49.2 Dark Up 21.4 138.5 Low 06:57:18 - 07:12:37 9573
Chiloquin 07:05:04 -50.4 Dark Up 22.2 137.8 Low 06:57:24 - 07:12:43 9540
Klamath Falls 07:05:03 -50.7 Dark Up 22.5 137.8 Low 06:57:24 - 07:12:43 9527
Fall River/Burney 07:05:07 -51.9 Dark Up 23.5 137.8 Low 06:57:27 - 07:12:46 9480
Cedarville 07:05:02 -51.7 Dark Up 23.8 139.1 Low 06:57:22 - 07:12:41 9471
Greenville 07:05:09 -52.9 Dark Up 24.5 138.0 Low 06:57:30 - 07:12:49 9438
Gimple 07:05:08 -52.9 Dark Up 24.5 138.1 Low 06:57:28 - 07:12:47 9436
Quincy 07:05:09 -53.1 Dark Up 24.6 137.9 Low 06:57:30 - 07:12:49 9430
Sleaford 07:03:57 -42.4 Dark Up 20.2 154.9 Low 06:56:17 - 07:11:36 9428
Portola 07:05:08 -53.3 Dark Up 24.9 138.3 Low 06:57:29 - 07:12:48 9416
Reno 07:05:07 -53.7 Dark Up 25.5 138.8 Low 06:57:28 - 07:12:47 9391
Carson City 07:05:08 -54.1 Dark Up 25.8 138.7 Low 06:57:29 - 07:12:48 9377
Gardnerville 07:05:09 -54.3 Dark Up 26.0 138.7 Low 06:57:30 - 07:12:49 9366
Yerington 07:05:07 -54.4 Dark Up 26.2 139.2 Low 06:57:28 - 07:12:47 9355
Hawthorne 07:05:07 -55.0 Dark Up 26.8 139.6 Low 06:57:28 - 07:12:47 9324
Lee Vining 07:05:11 -55.4 Dark Up 27.0 139.0 Low 06:57:31 - 07:12:50 9313
Bishop 07:05:10 -56.1 Dark Up 27.9 139.4 Low 06:57:31 - 07:12:50 9270
Beatty 07:05:07 -56.9 Dark Up 29.0 140.8 Low 06:57:27 - 07:12:46 9210
Wildwood 07:05:21 -59.2 Dark Up 30.2 138.1 Up 06:57:41 - 07:13:00 9127
Laughlin/Bullhead City 07:05:05 -59.0 Dark Up 31.5 142.2 Up 06:57:25 - 07:12:44 9072
Patrick 07:05:02 -58.9 Dark Up 31.6 143.0 Up 06:57:23 - 07:12:42 9065
Idyllwild 07:05:16 -60.0 Dark Up 31.5 139.7 Up 06:57:37 - 07:12:56 9062
Lake Havasu City 07:05:07 -59.7 Dark Up 32.2 142.2 Up 06:57:27 - 07:12:46 9033
Dunrhomin 07:04:23 -54.2 Dark Up 31.1 153.3 Up 06:56:44 - 07:12:03 9023
Nikitin 07:04:24 -54.4 Dark Up 31.3 153.2 Up 06:56:44 - 07:12:03 9016
CU-SBO 07:04:24 -54.4 Dark Up 31.3 153.1 Up 06:56:44 - 07:12:03 9016
Calipatria 07:05:14 -60.8 Dark Up 32.6 140.6 Up 06:57:35 - 07:12:54 8999
Yuma 07:05:13 -61.4 Dark Up 33.4 141.2 Up 06:57:33 - 07:12:52 8952
George/Scottsdale 07:05:01 -60.8 Dark Up 34.0 144.4 Up 06:57:22 - 07:12:41 8924

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 523736, (2028/10/04 07:13UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 40.44  66
68Omi Cet      02:19:20.8 -02:58:45  2.0 11.88  25
76Sig Cet      02:32:05.1 -15:14:43  4.8  0.78  35
PPM 211698     02:34:01.4 -14:10:10  8.1  0.72  35
PPM 211628     02:31:20.2 -14:29:07  9.5  0.00  35
523736         02:31:20.2 -14:29:07 10.3        35
Positions are for J2000

Event circumstances last updated at 2023/12/24 04:43:18 UT

Marc W. Buie, Southwest Research Institute

RECON