RECON: TNO occultation with 523752

Event between (523752) 14VU37 and star GA1060:00727130 with event index number of 1498607

Geocentric closest approach at 2026/02/04 06:00:52 UTC

J2000 position of star is 05:01:41.7 +17:46:09
Equinox of date position of star is 05:02:49.5 +17:47:46
Stellar brightness G=12.5, use SENSEUP=16
Star is 89 degrees from the moon. Moon is 94% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 42.3 AU from the Sun and 41.7 AU from the Earth.
The TNO is moving 11.8 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 945 seconds.
The 1-sigma cross-track error in the shadow position is 5418 km.
The sky-plane scale is 30270.7 km/arcsec.

The TNO has an absolute magnitude Hv=5.1
Diameter=575.5 km assuming a 5% albedo -- 48.7 sec chord
Diameter=234.9 km assuming a 30% albedo -- 19.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523752, (2026/02/04 06:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:25.2 +16:33:36  0.8  6.28  95
Alnath         05:27:56.6 +28:37:38  1.6 12.22  83
PPM 120426     04:58:52.9 +17:11:31  6.3  1.20  90
PPM 120566     05:06:21.4 +18:17:17  7.7  0.89  88
PPM 120479     05:01:27.8 +18:13:52 10.0  0.60  89
PPM 120499     05:02:30.1 +17:33:25 10.5  0.30  89
523752         05:03:12.8 +17:48:18 12.5        89
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 1.0 sigma about the mid-time.
The median site spacing is 23.1 km RECON observability=1.0 and success probability=7.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:57:38 -46.9 Dark Up 50.3 226.4 Up 05:42:38 - 06:12:38 6120
Summerland 05:57:39 -46.9 Dark Up 50.7 226.3 Up 05:42:39 - 06:12:39 6091
Penticton 05:57:37 -47.0 Dark Up 50.7 226.5 Up 05:42:37 - 06:12:37 6085
Okanagan Falls 05:57:38 -47.1 Dark Up 50.8 226.6 Up 05:42:38 - 06:12:38 6067
Oliver 05:57:36 -47.2 Dark Up 50.9 226.8 Up 05:42:36 - 06:12:36 6052
Anarchist Mountain Observatory 05:57:36 -47.4 Dark Up 50.9 227.2 Up 05:42:36 - 06:12:36 6036
Oroville 05:57:35 -47.4 Dark Up 51.0 227.1 Up 05:42:35 - 06:12:35 6029
Tonasket 05:57:35 -47.6 Dark Up 51.2 227.4 Up 05:42:35 - 06:12:35 6006
Okanogan 05:57:35 -47.7 Dark Up 51.5 227.5 Up 05:42:35 - 06:12:35 5973
Brewster 05:57:35 -47.8 Dark Up 51.8 227.5 Up 05:42:35 - 06:12:35 5946
Manson/Chelan 05:57:36 -47.7 Dark Up 52.1 227.2 Up 05:42:36 - 06:12:36 5925
Entiat 05:57:36 -47.8 Dark Up 52.3 227.3 Up 05:42:36 - 06:12:36 5903
Wenatchee 05:57:36 -47.9 Dark Up 52.5 227.4 Up 05:42:36 - 06:12:36 5878
Ellensburg 05:57:37 -48.0 Dark Up 52.9 227.5 Up 05:42:37 - 06:12:37 5837
Yakima 05:57:36 -48.2 Dark Up 53.2 227.9 Up 05:42:36 - 06:12:36 5797
Toppenish/White Swan 05:57:35 -48.4 Dark Up 53.2 228.3 Up 05:42:35 - 06:12:35 5777
Pasco 05:57:26 -49.2 Dark Up 52.7 230.1 Up 05:42:26 - 06:12:26 5771
PNWRO 05:57:25 -49.5 Dark Up 52.7 230.6 Up 05:42:25 - 06:12:25 5748
George/Umatilla 05:57:26 -49.3 Dark Up 53.0 230.1 Up 05:42:26 - 06:12:26 5737
Goldendale 05:57:36 -48.5 Dark Up 53.8 228.3 Up 05:42:36 - 06:12:36 5721
The Dalles 05:57:37 -48.4 Dark Up 54.2 228.0 Up 05:42:37 - 06:12:37 5697
Maupin 05:57:36 -48.7 Dark Up 54.4 228.6 Up 05:42:36 - 06:12:36 5656
Madras/Culver 05:57:35 -49.0 Dark Up 54.8 229.1 Up 05:42:35 - 06:12:35 5601
Sisters 05:57:37 -48.9 Dark Up 55.2 228.9 Up 05:42:37 - 06:12:37 5566
Redmond 05:57:34 -49.2 Dark Up 55.0 229.4 Up 05:42:34 - 06:12:34 5566
Bend 05:57:35 -49.2 Dark Up 55.2 229.5 Up 05:42:35 - 06:12:35 5544
Oregon Observatory 05:57:35 -49.2 Dark Up 55.4 229.5 Up 05:42:35 - 06:12:35 5526
La Pine/Gilchrist 05:57:35 -49.3 Dark Up 55.6 229.6 Up 05:42:35 - 06:12:35 5505
North Lake 05:57:30 -49.8 Dark Up 55.5 230.9 Up 05:42:30 - 06:12:30 5464
Paisley 05:57:27 -50.4 Dark Up 55.7 232.0 Up 05:42:27 - 06:12:27 5410
Chiloquin 05:57:35 -49.6 Dark Up 56.5 230.4 Up 05:42:35 - 06:12:35 5391
Lakeview 05:57:25 -50.7 Dark Up 55.9 232.9 Up 05:42:25 - 06:12:25 5360
Klamath Falls 05:57:34 -49.8 Dark Up 56.7 230.9 Up 05:42:34 - 06:12:34 5357
Tulelake 05:57:31 -50.1 Dark Up 56.7 231.6 Up 05:42:31 - 06:12:31 5331
Cedarville 05:57:22 -51.2 Dark Up 56.2 233.9 Up 05:42:22 - 06:12:22 5294
Niwot 05:55:50 -60.6 Dark Up 47.0 251.5 Up 05:40:50 - 06:10:50 5275
SwRI 05:55:51 -60.7 Dark Up 47.1 251.5 Up 05:40:51 - 06:10:51 5263
Fall River/Burney 05:57:28 -50.6 Dark Up 57.2 232.8 Up 05:42:28 - 06:12:28 5239
Susanville 05:57:23 -51.4 Dark Up 57.1 234.6 Up 05:42:23 - 06:12:23 5178
Gimple 05:57:23 -51.4 Dark Up 57.4 234.7 Up 05:42:23 - 06:12:23 5148
Greenville 05:57:25 -51.3 Dark Up 57.5 234.6 Up 05:42:25 - 06:12:25 5148
Quincy 05:57:24 -51.4 Dark Up 57.6 234.8 Up 05:42:24 - 06:12:24 5127
Portola 05:57:20 -51.8 Dark Up 57.4 235.6 Up 05:42:20 - 06:12:20 5116
Reno 05:57:17 -52.4 Dark Up 57.1 236.8 Up 05:42:17 - 06:12:17 5092
Carson City 05:57:15 -52.5 Dark Up 57.3 237.3 Up 05:42:15 - 06:12:15 5055
Yerington 05:57:10 -53.1 Dark Up 57.0 238.3 Up 05:42:10 - 06:12:10 5039
Gardnerville 05:57:15 -52.7 Dark Up 57.4 237.6 Up 05:42:15 - 06:12:15 5030
Hawthorne 05:57:06 -53.6 Dark Up 56.9 239.6 Up 05:42:06 - 06:12:06 4994
Tonopah 05:56:57 -54.8 Dark Up 56.2 241.8 Up 05:41:57 - 06:11:57 4954
Lee Vining 05:57:09 -53.6 Dark Up 57.5 239.7 Up 05:42:09 - 06:12:09 4932
Bishop 05:57:03 -54.3 Dark Up 57.3 241.4 Up 05:42:03 - 06:12:03 4874
Beatty 05:56:52 -55.7 Dark Up 56.4 243.9 Up 05:41:52 - 06:11:52 4836
Indian Springs 05:56:43 -56.6 Dark Up 55.8 245.5 Up 05:41:43 - 06:11:43 4810
Lone Pine 05:56:58 -54.9 Dark Up 57.4 242.8 Up 05:41:58 - 06:11:58 4796
Henderson 05:56:37 -57.3 Dark Up 55.5 246.9 Up 05:41:37 - 06:11:37 4759
Patrick 05:56:29 -58.4 Dark Up 54.9 248.8 Up 05:41:29 - 06:11:29 4702
Searchlight/Boulder City 05:56:36 -57.6 Dark Up 55.7 247.7 Up 05:41:36 - 06:11:36 4699
Kingman/Dolan Springs 05:56:31 -58.4 Dark Up 55.1 249.0 Up 05:41:31 - 06:11:31 4677
DCO 05:56:24 -59.0 Dark Up 54.5 249.9 Up 05:41:24 - 06:11:24 4676
Laughlin/Bullhead City 05:56:34 -58.0 Dark Up 55.5 248.5 Up 05:41:34 - 06:11:34 4671
CPSLO 05:57:14 -53.6 Dark Up 59.9 241.6 Up 05:42:14 - 06:12:14 4644
Mohave Valley 05:56:33 -58.1 Dark Up 55.6 248.9 Up 05:41:33 - 06:11:33 4642
Lake Havasu City 05:56:30 -58.5 Dark Up 55.6 249.6 Up 05:41:30 - 06:11:30 4601
Parker 05:56:29 -58.7 Dark Up 55.7 250.1 Up 05:41:29 - 06:11:29 4564
Wildwood 05:56:58 -55.6 Dark Up 58.9 245.8 Up 05:41:58 - 06:11:58 4528
Blythe 05:56:30 -58.7 Dark Up 56.1 250.6 Up 05:41:30 - 06:11:30 4506
Idyllwild 05:56:44 -57.1 Dark Up 57.7 248.4 Up 05:41:44 - 06:11:44 4502
Calipatria 05:56:36 -58.2 Dark Up 57.0 250.4 Up 05:41:36 - 06:11:36 4446
Yuma 05:56:29 -59.1 Dark Up 56.4 251.9 Up 05:41:29 - 06:11:29 4407

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 523752, (2026/02/04 06:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  6.28  95
Alnath         05:26:17.5 +28:36:23  1.6 12.22  83
PPM 120426     04:57:22.2 +17:09:12  6.3  1.20  90
PPM 120566     05:04:50.0 +18:15:14  7.7  0.89  88
PPM 120479     04:59:56.5 +18:11:38 10.0  0.60  89
PPM 120499     05:00:59.2 +17:31:14 10.5  0.30  89
523752         05:01:41.7 +17:46:09 12.5        89
Positions are for J2000

Event circumstances last updated at 2019/06/08 22:31:06 UT

Marc W. Buie, Southwest Research Institute

RECON