RECON: TNO occultation with 523749

Event between (523749) 14UR224 and star GA1100:00993347 with event index number of 2372603

Geocentric closest approach at 2024/08/25 09:02:09 UTC

J2000 position of star is 05:17:17.6 +20:24:52
Equinox of date position of star is 05:18:43.0 +20:26:20
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 31 degrees from the moon. Moon is 61% illuminated.
Apparent brightness V=21.7

[RECON map]
Object is 39.4 AU from the Sun and 39.7 AU from the Earth.
Apparent velocity is 13.9 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 140 seconds.
The 1-sigma cross-track error in the shadow position is 1502 km.
The sky-plane scale is 28810.4 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 33.2 sec chord
Diameter=186.6 km assuming a 30% albedo -- 13.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523749, (2024/08/25 09:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.3 +16:33:25  0.8 10.56  22
Alnath         05:27:51.1 +28:37:34  1.6  8.44  33
PPM 120839     05:21:45.6 +19:36:05  6.5  1.10  32
PPM 094240     05:18:58.8 +20:09:22  7.3  0.29  31
PPM 094244     05:19:05.4 +20:26:51 10.0  0.08  31
523749         05:18:45.4 +20:26:22 16.4        31
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=0.1 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)
Kamloops 08:56:54 -27.7 Dark Up 14.8 75.7 Really Low 08:44:43 - 09:09:05 9579
Victoria 08:56:43 -30.3 Dark Up 12.3 73.0 Really Low 08:44:32 - 09:08:54 9500
Kelowna 08:56:51 -28.3 Dark Up 15.2 76.2 Really Low 08:44:40 - 09:09:02 9497
Peachland 08:56:50 -28.5 Dark Up 15.0 75.9 Really Low 08:44:39 - 09:09:01 9497
Summerland 08:56:49 -28.6 Dark Up 15.0 76.0 Really Low 08:44:38 - 09:09:00 9483
Penticton 08:56:48 -28.7 Dark Up 15.0 76.0 Really Low 08:44:37 - 09:08:59 9476
Oliver 08:56:47 -29.0 Dark Up 14.9 75.9 Really Low 08:44:36 - 09:08:58 9450
Anarchist Mountain Observatory 08:56:45 -29.1 Dark Up 15.0 76.0 Really Low 08:44:34 - 09:08:56 9432
Okanogan 08:56:42 -29.8 Dark Up 14.7 75.7 Really Low 08:44:31 - 09:08:53 9389
Brewster 08:56:41 -30.1 Dark Up 14.5 75.5 Really Low 08:44:30 - 09:08:52 9374
Manson/Chelan 08:56:40 -30.4 Dark Up 14.2 75.2 Really Low 08:44:29 - 09:08:51 9368
Sleaford 08:57:11 -22.9 Dark Up 24.0 87.1 Low 08:45:00 - 09:09:22 9345
Wenatchee 08:56:38 -30.9 Dark Up 14.0 74.9 Really Low 08:44:27 - 09:08:49 9336
Ellensburg 08:56:33 -31.3 Dark Up 13.7 74.6 Really Low 08:44:22 - 09:08:44 9311
Yakima 08:56:32 -31.7 Dark Up 13.6 74.5 Really Low 08:44:21 - 09:08:43 9280
Toppenish/White Swan 08:56:31 -31.9 Dark Up 13.6 74.6 Really Low 08:44:20 - 09:08:42 9259
The Dalles 08:56:28 -32.8 Dark Up 12.9 73.9 Really Low 08:44:17 - 09:08:39 9220
PNWRO 08:56:28 -31.9 Dark Up 14.5 75.5 Really Low 08:44:17 - 09:08:39 9189
Maupin 08:56:26 -33.2 Dark Up 12.8 73.9 Really Low 08:44:15 - 09:08:37 9184
Sisters 08:56:21 -34.1 Dark Up 12.2 73.3 Really Low 08:44:10 - 09:08:32 9129
Bend 08:56:18 -34.3 Dark Up 12.3 73.4 Really Low 08:44:07 - 09:08:29 9103
Oregon Observatory 08:56:17 -34.5 Dark Up 12.2 73.3 Really Low 08:44:06 - 09:08:28 9093
Chiloquin 08:56:13 -35.8 Dark Up 11.5 72.8 Really Low 08:44:02 - 09:08:24 8999
Klamath Falls 08:56:11 -36.2 Dark Up 11.5 72.8 Really Low 08:44:00 - 09:08:22 8969
Cedarville 08:56:08 -36.5 Dark Up 12.4 73.6 Really Low 08:43:57 - 09:08:19 8865
Fall River/Burney 08:56:05 -37.2 Dark Up 11.4 72.7 Really Low 08:43:54 - 09:08:16 8861
Greenville 08:56:01 -38.0 Dark Up 11.4 72.8 Really Low 08:43:50 - 09:08:12 8772
Gimple 08:56:01 -38.0 Dark Up 11.5 72.9 Really Low 08:43:50 - 09:08:12 8769
Quincy 08:56:00 -38.2 Dark Up 11.4 72.8 Really Low 08:43:49 - 09:08:11 8755
Portola 08:55:59 -38.2 Dark Up 11.7 73.0 Really Low 08:43:48 - 09:08:10 8730
Reno 08:55:58 -38.3 Dark Up 12.1 73.4 Really Low 08:43:47 - 09:08:09 8688
Carson City 08:55:56 -38.7 Dark Up 12.0 73.3 Really Low 08:43:45 - 09:08:07 8657
Gardnerville 08:55:55 -38.9 Dark Up 11.9 73.3 Really Low 08:43:44 - 09:08:06 8634
Yerington 08:55:56 -38.7 Dark Up 12.4 73.6 Really Low 08:43:45 - 09:08:07 8621
Hawthorne 08:55:54 -39.0 Dark Up 12.7 73.8 Really Low 08:43:43 - 09:08:05 8564
Lee Vining 08:55:51 -39.7 Dark Up 12.1 73.4 Really Low 08:43:40 - 09:08:02 8531
Bishop 08:55:49 -40.1 Dark Up 12.5 73.7 Really Low 08:43:38 - 09:08:00 8456
Beatty 08:55:47 -40.0 Dark Up 13.6 74.5 Really Low 08:43:36 - 09:07:58 8364
Dunrhomin 08:56:12 -32.8 Dark Up 23.2 82.3 Low 08:44:01 - 09:08:23 8328
Nikitin 08:56:11 -33.0 Dark Up 23.2 82.2 Low 08:44:00 - 09:08:22 8312
CU-SBO 08:56:11 -33.1 Dark Up 23.1 82.1 Low 08:44:00 - 09:08:22 8308
Wildwood 08:55:35 -43.2 Dark Up 11.3 72.9 Really Low 08:43:24 - 09:07:46 8170
Patrick 08:55:42 -40.5 Dark Up 15.5 75.7 Really Low 08:43:31 - 09:07:53 8141
Laughlin/Bullhead City 08:55:41 -40.9 Dark Up 14.8 75.2 Really Low 08:43:30 - 09:07:52 8140
Idyllwild 08:55:34 -43.0 Dark Up 12.7 73.8 Really Low 08:43:23 - 09:07:45 8077
Lake Havasu City 08:55:38 -41.5 Dark Up 14.9 75.2 Really Low 08:43:27 - 09:07:49 8070
Calipatria 08:55:32 -43.1 Dark Up 13.5 74.2 Really Low 08:43:21 - 09:07:43 7982
George/Scottsdale 08:55:37 -41.2 Dark Up 16.7 76.2 Really Low 08:43:26 - 09:07:48 7921
Yuma 08:55:31 -43.2 Dark Up 14.1 74.6 Really Low 08:43:20 - 09:07:42 7913

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, (2024/08/25 09:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.56  22
Alnath         05:26:17.6 +28:36:23  1.6  8.44  33
PPM 120839     05:20:18.3 +19:34:41  6.5  1.10  32
PPM 094240     05:17:31.1 +20:07:52  7.3  0.29  31
PPM 094244     05:17:37.5 +20:25:21 10.0  0.08  31
523749         05:17:17.6 +20:24:52 16.4        31
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:48:01 UT

Marc W. Buie, Southwest Research Institute

RECON