RECON: TNO occultation with 534625

Event between (534625) 14UQ224 and star GA1140:01343558 with event index number of 2388249

Geocentric closest approach at 2028/10/21 07:46:56 UTC

J2000 position of star is 05:37:56.8 +25:09:39
Equinox of date position of star is 05:39:26.2 +25:10:24
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 14% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 46.5 AU from the Sun and 45.9 AU from the Earth.
Apparent velocity is 12.5 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 728 seconds.
The 1-sigma cross-track error in the shadow position is 1890 km.
The sky-plane scale is 33292.2 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=467.8 km assuming a 5% albedo -- 37.5 sec chord
Diameter=191.0 km assuming a 30% albedo -- 15.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 534625, (2028/10/21 07:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.6 +16:33:54  0.8 16.86 171
Alnath         05:28:06.9 +28:37:45  1.6  4.32 169
125 Tau        05:41:31.4 +25:54:38  5.2  0.84 166
PPM 094629     05:41:37.4 +24:14:21  7.4  1.03 166
PPM 094559     05:38:24.3 +25:10:12  9.8  0.30 167
534625         05:39:43.4 +25:10:32 15.4       166
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 1.2 sigma about the mid-time.
The median site spacing is 28.0 km RECON observability=1.0 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:51:42 -50.2 Dark Down 40.1 98.7 Up 07:36:42 - 08:06:42 5952
Kelowna 07:51:42 -51.0 Dark Down 40.8 98.8 Up 07:36:42 - 08:06:42 5860
Peachland 07:51:44 -51.1 Dark Down 40.6 98.4 Up 07:36:44 - 08:06:44 5857
Summerland 07:51:44 -51.3 Dark Down 40.7 98.4 Up 07:36:44 - 08:06:44 5842
Victoria 07:52:03 -52.4 Dark Down 38.5 94.5 Up 07:37:03 - 08:07:03 5840
Penticton 07:51:44 -51.3 Dark Down 40.8 98.4 Up 07:36:44 - 08:06:44 5833
Oliver 07:51:46 -51.7 Dark Down 40.9 98.1 Up 07:36:46 - 08:06:46 5802
Anarchist Mountain Observatory 07:51:46 -51.9 Dark Down 41.0 98.1 Up 07:36:46 - 08:06:46 5782
Sleaford 07:50:41 -46.9 Dark Down 48.2 113.5 Up 07:35:41 - 08:05:41 5776
Okanogan 07:51:51 -52.5 Dark Down 41.0 97.4 Up 07:36:51 - 08:06:51 5730
Brewster 07:51:53 -52.8 Dark Down 40.9 97.0 Up 07:36:53 - 08:06:53 5711
Manson/Chelan 07:51:55 -53.0 Dark Down 40.7 96.6 Up 07:36:55 - 08:06:55 5701
Wenatchee 07:51:58 -53.5 Dark Down 40.6 96.0 Up 07:36:58 - 08:06:58 5663
Ellensburg 07:52:01 -53.9 Dark Down 40.5 95.5 Up 07:37:01 - 08:07:01 5631
Yakima 07:52:03 -54.3 Dark Down 40.5 95.2 Up 07:37:03 - 08:07:03 5595
Toppenish/White Swan 07:52:04 -54.5 Dark Down 40.7 95.1 Up 07:37:04 - 08:07:04 5571
The Dalles 07:52:10 -55.3 Dark Down 40.2 93.9 Up 07:37:10 - 08:07:10 5521
PNWRO 07:52:01 -54.8 Dark Down 41.7 95.9 Up 07:37:01 - 08:07:01 5499
Maupin 07:52:12 -55.7 Dark Down 40.3 93.6 Up 07:37:12 - 08:07:12 5480
Sisters 07:52:18 -56.6 Dark Down 40.0 92.5 Up 07:37:18 - 08:07:18 5413
Bend 07:52:19 -56.9 Dark Down 40.2 92.5 Up 07:37:19 - 08:07:19 5384
Oregon Observatory 07:52:20 -57.0 Dark Down 40.1 92.3 Up 07:37:20 - 08:07:20 5371
Chiloquin 07:52:29 -58.4 Dark Down 39.9 90.9 Up 07:37:29 - 08:07:29 5260
Klamath Falls 07:52:30 -58.7 Dark Down 40.0 90.7 Up 07:37:30 - 08:07:30 5226
Cedarville 07:52:26 -59.4 Dark Down 41.2 91.1 Up 07:37:26 - 08:07:26 5116
Fall River/Burney 07:52:33 -59.9 Dark Down 40.3 89.9 Up 07:37:33 - 08:07:33 5104
Greenville 07:52:36 -60.8 Dark Down 40.6 89.5 Up 07:37:36 - 08:07:36 5005
Gimple 07:52:37 -60.8 Dark Down 40.7 89.5 Up 07:37:37 - 08:07:37 5002
Quincy 07:52:36 -61.0 Dark Down 40.6 89.3 Up 07:37:36 - 08:07:36 4985
Portola 07:52:35 -61.1 Dark Down 41.0 89.5 Up 07:37:35 - 08:07:35 4960
Reno 07:52:35 -61.3 Dark Down 41.5 89.7 Up 07:37:35 - 08:07:35 4916
Carson City 07:52:36 -61.7 Dark Down 41.5 89.4 Up 07:37:36 - 08:07:36 4880
Gardnerville 07:52:37 -61.9 Dark Down 41.5 89.2 Up 07:37:37 - 08:07:37 4855
Yerington 07:52:33 -61.8 Dark Down 42.0 89.6 Up 07:37:33 - 08:07:33 4843
Hawthorne 07:52:33 -62.2 Dark Down 42.4 89.5 Up 07:37:33 - 08:07:33 4783
Lee Vining 07:52:38 -62.8 Dark Down 42.0 88.7 Up 07:37:38 - 08:07:38 4742
Bishop 07:52:38 -63.4 Dark Down 42.6 88.6 Up 07:37:38 - 08:07:38 4662
Dunrhomin 07:51:25 -57.2 Dark Down 52.4 100.7 Up 07:36:25 - 08:06:25 4617
Nikitin 07:51:26 -57.4 Dark Down 52.4 100.5 Up 07:36:26 - 08:06:26 4599
CU-SBO 07:51:27 -57.5 Dark Down 52.4 100.3 Up 07:36:27 - 08:06:27 4594
Beatty 07:52:32 -63.6 Dark Down 43.8 89.1 Up 07:37:32 - 08:07:32 4570
Wildwood 07:52:51 -66.6 Dark Down 42.3 85.5 Up 07:37:51 - 08:07:51 4343
Patrick 07:52:26 -64.4 Dark Down 46.1 89.3 Up 07:37:26 - 08:07:26 4340
Laughlin/Bullhead City 07:52:30 -64.8 Dark Down 45.6 88.6 Up 07:37:30 - 08:07:30 4335
Lake Havasu City 07:52:30 -65.4 Dark Down 45.8 88.1 Up 07:37:30 - 08:07:30 4259
Idyllwild 07:52:45 -66.7 Dark Down 43.8 86.1 Up 07:37:45 - 08:07:45 4251
Calipatria 07:52:41 -67.0 Dark Down 44.7 86.1 Up 07:37:41 - 08:07:41 4154
George/Scottsdale 07:52:21 -65.4 Dark Down 47.7 88.5 Up 07:37:21 - 08:07:21 4112
Yuma 07:52:39 -67.2 Dark Down 45.4 86.1 Up 07:37:39 - 08:07:39 4084

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 534625, (2028/10/21 07:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 16.86 171
Alnath         05:26:17.6 +28:36:23  1.6  4.32 169
125 Tau        05:39:44.2 +25:53:49  5.2  0.84 166
PPM 094629     05:39:51.5 +24:13:32  7.4  1.03 166
PPM 094559     05:36:37.7 +25:09:15  9.8  0.30 167
534625         05:37:56.8 +25:09:39 15.4       166
Positions are for J2000

Event circumstances last updated at 2024/03/08 02:55:46 UT

Marc W. Buie, Southwest Research Institute

RECON