RECON: TNO occultation with 523751

Event between (523751) 14UU224 and star GA0980:01536957 with event index number of 2723618

Geocentric closest approach at 2029/03/11 05:42:32 UTC

J2000 position of star is 06:12:58.2 +08:44:40
Equinox of date position of star is 06:14:17.0 +08:44:11
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 144 degrees from the moon. Moon is 14% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 31.0 AU from the Sun and 30.8 AU from the Earth.
Apparent velocity is 7.9 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 149 seconds.
The 1-sigma cross-track error in the shadow position is 2247 km.
The sky-plane scale is 22335.2 km/arcsec.

The object has an absolute magnitude Hv=7.1
Diameter=228.0 km assuming a 5% albedo -- 29.1 sec chord
Diameter=93.1 km assuming a 30% albedo -- 11.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523751, (2029/03/11 05:41UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:45.2 +07:24:36  0.4  4.60 140
Alhena         06:39:23.9 +16:22:18  1.9  9.75 152
75 Ori         06:18:43.2 +09:55:45  5.4  1.57 146
PPM 150087     06:14:28.7 +08:33:39  8.5  0.18 144
PPM 150103     06:14:50.8 +08:40:14  9.2  0.09 144
523751         06:14:34.0 +08:44:05 16.9       145
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 15.6 km RECON observability=1.0 and success probability=4.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Nikitin 05:48:47 -49.1 Dark Down 29.9 255.2 Low 05:35:52 - 06:01:43 5289
CU-SBO 05:48:47 -49.1 Dark Down 30.0 255.2 Up 05:35:52 - 06:01:43 5289
Dunrhomin 05:48:51 -49.0 Dark Down 29.9 255.1 Low 05:35:55 - 06:01:46 5282
George/Scottsdale 05:47:17 -50.4 Dark Down 37.1 254.0 Up 05:34:21 - 06:00:12 5178
Yuma 05:47:03 -49.3 Dark Down 39.6 252.7 Up 05:34:08 - 05:59:59 5036
Lake Havasu City 05:47:27 -48.4 Dark Down 38.8 251.6 Up 05:34:32 - 06:00:23 5003
Patrick 05:47:44 -48.1 Dark Down 38.1 251.3 Up 05:34:49 - 06:00:40 5003
Calipatria 05:47:09 -48.5 Dark Down 40.2 251.7 Up 05:34:13 - 06:00:04 4966
Laughlin/Bullhead City 05:47:36 -47.9 Dark Down 38.7 250.9 Up 05:34:41 - 06:00:32 4966
Idyllwild 05:47:16 -47.4 Dark Down 40.9 250.3 Up 05:34:21 - 06:00:12 4873
Beatty 05:47:59 -45.4 Dark Down 39.7 247.9 Up 05:35:04 - 06:00:55 4776
Wildwood 05:47:22 -45.9 Dark Down 42.2 248.5 Up 05:34:27 - 06:00:18 4737
Bishop 05:48:04 -44.2 Dark Down 40.7 246.2 Up 05:35:09 - 06:01:00 4657
Sleaford 05:51:08 -38.6 Dark Down 26.3 248.9 Low 05:38:13 - 06:04:04 4605
Hawthorne 05:48:19 -43.3 Dark Down 40.3 245.1 Up 05:35:24 - 06:01:15 4605
Lee Vining 05:48:12 -43.4 Dark Down 40.9 245.1 Up 05:35:17 - 06:01:08 4592
Yerington 05:48:25 -42.7 Dark Down 40.5 244.3 Up 05:35:30 - 06:01:21 4556
Gardnerville 05:48:25 -42.4 Dark Down 40.9 243.8 Up 05:35:29 - 06:01:20 4520
Carson City 05:48:28 -42.2 Dark Down 40.8 243.5 Up 05:35:32 - 06:01:23 4510
Reno 05:48:32 -42.0 Dark Down 40.7 243.3 Up 05:35:37 - 06:01:28 4496
Portola 05:48:35 -41.4 Dark Down 41.0 242.5 Up 05:35:40 - 06:01:31 4446
Quincy 05:48:38 -41.1 Dark Down 41.3 241.9 Up 05:35:42 - 06:01:33 4411
Gimple 05:48:39 -41.0 Dark Down 41.1 241.8 Up 05:35:44 - 06:01:35 4410
Cedarville 05:48:58 -40.6 Dark Down 39.9 241.5 Up 05:36:02 - 06:01:53 4407
Greenville 05:48:40 -41.0 Dark Down 41.2 241.8 Up 05:35:45 - 06:01:36 4405
Fall River/Burney 05:48:50 -40.1 Dark Down 41.0 240.7 Up 05:35:55 - 06:01:46 4346
PNWRO 05:49:51 -38.3 Dark Down 36.8 239.9 Up 05:36:55 - 06:02:46 4312
Klamath Falls 05:49:06 -39.2 Dark Down 40.6 239.5 Up 05:36:10 - 06:02:01 4283
Chiloquin 05:49:10 -39.0 Dark Down 40.5 239.2 Up 05:36:15 - 06:02:06 4266
Bend 05:49:33 -38.4 Dark Down 39.3 238.7 Up 05:36:38 - 06:02:29 4247
Oregon Observatory 05:49:26 -38.4 Dark Down 39.5 238.7 Up 05:36:30 - 06:02:21 4245
Sisters 05:49:30 -38.1 Dark Down 39.4 238.3 Up 05:36:35 - 06:02:26 4222
Maupin 05:49:40 -37.8 Dark Down 38.6 238.2 Up 05:36:45 - 06:02:36 4218
Toppenish/White Swan 05:49:55 -37.3 Dark Down 37.5 238.2 Up 05:37:00 - 06:02:51 4211
The Dalles 05:49:45 -37.4 Dark Down 38.4 237.9 Up 05:36:50 - 06:02:41 4196
Yakima 05:50:01 -37.1 Dark Down 37.5 237.9 Up 05:37:06 - 06:02:57 4193
Ellensburg 05:50:03 -36.9 Dark Down 37.2 237.7 Up 05:37:07 - 06:02:58 4177
Brewster 05:50:15 -36.5 Dark Down 36.2 237.8 Up 05:37:20 - 06:03:11 4173
Okanogan 05:50:21 -36.4 Dark Down 35.9 237.9 Up 05:37:25 - 06:03:16 4172
Wenatchee 05:50:08 -36.7 Dark Down 36.9 237.7 Up 05:37:13 - 06:03:04 4172
Manson/Chelan 05:50:12 -36.4 Dark Down 36.5 237.5 Up 05:37:16 - 06:03:07 4162
Anarchist Mountain Observatory 05:50:31 -36.1 Dark Down 35.4 237.7 Up 05:37:36 - 06:03:27 4156
Oliver 05:50:28 -35.8 Dark Down 35.4 237.4 Up 05:37:32 - 06:03:23 4138
Penticton 05:50:35 -35.6 Dark Down 35.2 237.2 Up 05:37:39 - 06:03:30 4122
Summerland 05:50:33 -35.5 Dark Down 35.3 237.1 Up 05:37:38 - 06:03:29 4113
Kelowna 05:50:38 -35.4 Dark Down 35.0 237.2 Up 05:37:43 - 06:03:34 4112
Peachland 05:50:33 -35.3 Dark Down 35.2 236.9 Up 05:37:37 - 06:03:28 4101
Kamloops 05:50:47 -34.4 Dark Down 35.0 235.8 Up 05:37:52 - 06:03:43 4028
Victoria 05:50:22 -34.4 Dark Down 37.9 233.8 Up 05:37:27 - 06:03:18 3952

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 523751, (2029/03/11 05:41UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  4.60 140
Alhena         06:37:42.8 +16:23:56  1.9  9.75 152
75 Ori         06:17:06.6 +09:56:31  5.4  1.57 146
PPM 150087     06:12:53.1 +08:34:13  8.5  0.18 144
PPM 150103     06:13:15.1 +08:40:50  9.2  0.09 144
523751         06:12:58.2 +08:44:40 16.9       144
Positions are for J2000

Event circumstances last updated at 2024/01/09 22:30:36 UT

Marc W. Buie, Southwest Research Institute

RECON