RECON: TNO occultation with 523750

Event between (523750) 14US224 and star GA1200:00599225 with event index number of 2615528

Geocentric closest approach at 2028/10/19 13:14:31 UTC

J2000 position of star is 03:31:28.9 +30:30:53
Equinox of date position of star is 03:32:58.5 +30:35:44
Stellar brightness G=12.4, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=21.4

[RECON map]
Object is 45.0 AU from the Sun and 44.2 AU from the Earth.
Apparent velocity is 21.4 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 237 seconds.
The 1-sigma cross-track error in the shadow position is 1941 km.
The sky-plane scale is 32055.7 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=616.6 km assuming a 5% albedo -- 30.2 sec chord
Diameter=251.7 km assuming a 30% albedo -- 12.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 523750, (2028/10/19 13:18UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.6 +16:33:54  0.8 20.31 155
44Zet Per      03:55:57.0 +31:58:00  2.8  5.03 162
PPM 092402     03:22:05.4 +29:09:03  4.5  2.83 170
PPM 068552     03:33:56.2 +30:06:07  8.2  0.53 167
PPM 068540     03:33:30.6 +30:46:40 10.8  0.18 167
523750         03:33:15.6 +30:36:40 12.4       167
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 3.8 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 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 13:11:24 -4.6 CT Down 37.0 273.8 Up 12:56:24 - 13:26:24 304
Kamloops 13:11:45 -13.4 AT Down 46.0 263.6 Up 12:56:45 - 13:26:45 -203
Kelowna 13:11:41 -12.8 AT Down 45.5 265.2 Up 12:56:41 - 13:26:41 -259
Peachland 13:11:42 -13.0 AT Down 45.7 265.1 Up 12:56:42 - 13:26:42 -277
Summerland 13:11:41 -13.0 AT Down 45.7 265.3 Up 12:56:41 - 13:26:41 -289
Penticton 13:11:40 -12.9 AT Down 45.6 265.5 Up 12:56:40 - 13:26:40 -292
Oliver 13:11:40 -12.9 AT Down 45.7 265.8 Up 12:56:40 - 13:26:40 -326
Anarchist Mountain Observatory 13:11:39 -12.8 AT Down 45.5 266.1 Up 12:56:39 - 13:26:39 -337
Okanogan 13:11:38 -12.9 AT Down 45.7 266.6 Up 12:56:38 - 13:26:38 -405
Brewster 13:11:37 -13.0 AT Down 45.9 266.7 Up 12:56:37 - 13:26:37 -436
Manson/Chelan 13:11:38 -13.3 AT Down 46.1 266.7 Up 12:56:38 - 13:26:38 -465
Victoria 13:11:47 -15.4 AT Down 48.2 263.4 Up 12:56:47 - 13:26:47 -481
Wenatchee 13:11:37 -13.4 AT Down 46.3 267.0 Up 12:56:37 - 13:26:37 -515
Ellensburg 13:11:36 -13.5 AT Down 46.5 267.3 Up 12:56:36 - 13:26:36 -561
Yakima 13:11:35 -13.5 AT Down 46.5 267.7 Up 12:56:35 - 13:26:35 -601
PNWRO 13:11:30 -12.4 AT Down 45.4 269.5 Up 12:56:30 - 13:26:30 -615
Toppenish/White Swan 13:11:34 -13.4 AT Down 46.4 268.0 Up 12:56:34 - 13:26:34 -618
The Dalles 13:11:34 -14.0 AT Down 47.0 268.3 Up 12:56:34 - 13:26:34 -715
Dunrhomin 13:10:48 -1.9 CT Down 34.9 282.7 Up 12:55:48 - 13:25:48 -736
Maupin 13:11:33 -13.9 AT Down 46.9 268.8 Up 12:56:33 - 13:26:33 -753
Nikitin 13:10:47 -1.9 CT Down 34.9 282.8 Up 12:55:47 - 13:25:47 -754
CU-SBO 13:10:47 -1.9 CT Down 34.9 282.9 Up 12:55:47 - 13:25:47 -763
Sisters 13:11:32 -14.2 AT Down 47.3 269.4 Up 12:56:32 - 13:26:32 -853
Bend 13:11:31 -14.0 AT Down 47.1 269.8 Up 12:56:31 - 13:26:31 -870
Oregon Observatory 13:11:31 -14.1 AT Down 47.2 269.9 Up 12:56:31 - 13:26:31 -891
Chiloquin 13:11:29 -14.4 AT Down 47.5 271.1 Up 12:56:29 - 13:26:29 -1033
Klamath Falls 13:11:28 -14.4 AT Down 47.4 271.5 Up 12:56:28 - 13:26:28 -1066
Cedarville 13:11:23 -13.2 AT Down 46.2 273.2 Up 12:56:23 - 13:26:23 -1092
Fall River/Burney 13:11:25 -14.1 AT Down 47.1 273.0 Up 12:56:25 - 13:26:25 -1175
Gimple 13:11:21 -13.7 AT Down 46.6 274.3 Up 12:56:21 - 13:26:21 -1252
Greenville 13:11:22 -13.7 AT Down 46.7 274.2 Up 12:56:22 - 13:26:22 -1254
Portola 13:11:20 -13.3 AT Down 46.3 274.8 Up 12:56:20 - 13:26:20 -1274
Quincy 13:11:22 -13.7 AT Down 46.7 274.4 Up 12:56:22 - 13:26:22 -1275
Reno 13:11:18 -12.8 AT Down 45.8 275.5 Up 12:56:18 - 13:26:18 -1282
Carson City 13:11:17 -12.8 AT Down 45.7 275.9 Up 12:56:17 - 13:26:17 -1318
Yerington 13:11:15 -12.3 AT Down 45.2 276.4 Up 12:56:15 - 13:26:15 -1319
Gardnerville 13:11:16 -12.8 AT Down 45.7 276.1 Up 12:56:16 - 13:26:16 -1342
Hawthorne 13:11:12 -11.9 NT Down 44.8 277.1 Up 12:56:12 - 13:26:12 -1351
Lee Vining 13:11:13 -12.2 AT Down 45.1 277.4 Up 12:56:13 - 13:26:13 -1423
Beatty 13:11:04 -10.3 NT Down 43.1 279.6 Up 12:56:04 - 13:26:04 -1458
Bishop 13:11:09 -11.6 NT Down 44.5 278.4 Up 12:56:09 - 13:26:09 -1462
Patrick 13:10:55 -7.8 NT Down 40.6 282.2 Up 12:55:55 - 13:25:55 -1513
Laughlin/Bullhead City 13:10:55 -8.4 NT Down 41.1 282.1 Up 12:55:55 - 13:25:55 -1562
George/Scottsdale 13:10:46 -6.0 CT Down 38.6 284.4 Up 12:55:46 - 13:25:46 -1614
Lake Havasu City 13:10:54 -8.1 NT Down 40.7 282.8 Up 12:55:54 - 13:25:54 -1621
Idyllwild 13:10:58 -10.0 NT Down 42.5 282.5 Up 12:55:58 - 13:25:58 -1778
Calipatria 13:10:54 -8.9 NT Down 41.4 283.5 Up 12:55:54 - 13:25:54 -1801
Wildwood 13:11:04 -11.5 NT Down 44.1 281.4 Up 12:56:04 - 13:26:04 -1802
Yuma 13:10:51 -8.1 NT Down 40.6 284.2 Up 12:55:51 - 13:25:51 -1815

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 523750, (2028/10/19 13:18UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 20.31 155
44Zet Per      03:54:07.9 +31:53:01  2.8  5.03 162
PPM 092402     03:20:20.3 +29:02:54  4.5  2.83 170
PPM 068552     03:32:09.8 +30:00:22  8.2  0.53 167
PPM 068540     03:31:43.7 +30:40:54 10.8  0.18 167
523750         03:31:28.9 +30:30:53 12.4       167
Positions are for J2000

Event circumstances last updated at 2024/03/07 04:46:52 UT

Marc W. Buie, Southwest Research Institute

RECON