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 05:43:48 UTC

J2000 position of star is 05:01:41.7 +17:46:09
Equinox of date position of star is 05:02:54.1 +17:47:52
Stellar brightness G=12.5, use SENSEUP=16
Star is 89 degrees from the moon. Moon is 94% illuminated.
TNO apparent brightness V=26.4

[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 960 seconds.
The 1-sigma cross-track error in the shadow position is 4921 km.
The sky-plane scale is 30271.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=575.5 km assuming a 5% albedo -- 5.1 sec chord
Diameter=234.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523752, (2026/02/04 05:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:25.2 +16:33:35  0.8  6.28  95
Alnath         05:27:56.6 +28:37:38  1.6 12.22  82
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        88
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 0.9 sigma about the mid-time.
The median site spacing is 24.1 km RECON observability=1.0 and success probability=10.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 05:40:58 -44.6 Dark Up 51.9 220.6 Up 05:25:58 - 05:55:58 274
Kelowna 05:40:58 -44.7 Dark Up 52.3 220.7 Up 05:25:58 - 05:55:58 236
Peachland 05:41:00 -44.6 Dark Up 52.5 220.3 Up 05:26:00 - 05:56:00 225
Summerland 05:40:59 -44.7 Dark Up 52.5 220.6 Up 05:25:59 - 05:55:59 211
Penticton 05:40:58 -44.8 Dark Up 52.5 220.8 Up 05:25:58 - 05:55:58 205
Oliver 05:40:57 -45.0 Dark Up 52.8 221.1 Up 05:25:57 - 05:55:57 172
Anarchist Mountain Observatory 05:40:56 -45.2 Dark Up 52.9 221.5 Up 05:25:56 - 05:55:56 156
Tonasket 05:40:56 -45.4 Dark Up 53.1 221.7 Up 05:25:56 - 05:55:56 126
Victoria 05:41:18 -43.2 Dark Up 54.9 216.2 Up 05:26:18 - 05:56:18 99
Okanogan 05:40:56 -45.5 Dark Up 53.4 221.8 Up 05:25:56 - 05:55:56 93
Brewster 05:40:56 -45.5 Dark Up 53.7 221.7 Up 05:25:56 - 05:55:56 66
Manson/Chelan 05:40:58 -45.4 Dark Up 54.0 221.4 Up 05:25:58 - 05:55:58 45
Entiat 05:40:58 -45.5 Dark Up 54.2 221.5 Up 05:25:58 - 05:55:58 24
Wenatchee 05:40:58 -45.5 Dark Up 54.5 221.6 Up 05:25:58 - 05:55:58 -1
Ellensburg 05:40:59 -45.6 Dark Up 54.9 221.7 Up 05:25:59 - 05:55:59 -42
Yakima 05:40:58 -45.8 Dark Up 55.2 222.0 Up 05:25:58 - 05:55:58 -82
Toppenish/White Swan 05:40:57 -46.0 Dark Up 55.3 222.5 Up 05:25:57 - 05:55:57 -103
Pasco 05:40:49 -46.8 Dark Up 54.8 224.4 Up 05:25:49 - 05:55:49 -111
PNWRO 05:40:47 -47.1 Dark Up 54.8 225.0 Up 05:25:47 - 05:55:47 -134
Goldendale 05:40:58 -46.1 Dark Up 55.9 222.4 Up 05:25:58 - 05:55:58 -158
The Dalles 05:41:00 -45.9 Dark Up 56.2 222.1 Up 05:26:00 - 05:56:00 -182
Maupin 05:40:58 -46.2 Dark Up 56.5 222.7 Up 05:25:58 - 05:55:58 -223
Sisters 05:41:00 -46.3 Dark Up 57.4 222.9 Up 05:26:00 - 05:56:00 -311
Redmond 05:40:57 -46.6 Dark Up 57.2 223.5 Up 05:25:57 - 05:55:57 -313
Bend 05:40:58 -46.6 Dark Up 57.4 223.5 Up 05:25:58 - 05:55:58 -334
Oregon Observatory 05:40:58 -46.6 Dark Up 57.6 223.5 Up 05:25:58 - 05:55:58 -352
La Pine/Gilchrist 05:40:58 -46.6 Dark Up 57.8 223.6 Up 05:25:58 - 05:55:58 -373
North Lake 05:40:54 -47.2 Dark Up 57.8 225.0 Up 05:25:54 - 05:55:54 -415
Paisley 05:40:51 -47.7 Dark Up 58.0 226.1 Up 05:25:51 - 05:55:51 -470
Lakeview 05:40:49 -48.0 Dark Up 58.3 227.0 Up 05:25:49 - 05:55:49 -520
Klamath Falls 05:40:58 -47.1 Dark Up 59.0 224.8 Up 05:25:58 - 05:55:58 -521
Cedarville 05:40:46 -48.4 Dark Up 58.6 228.0 Up 05:25:46 - 05:55:46 -587
Niwot 05:39:13 -58.4 Dark Up 50.0 247.5 Up 05:24:13 - 05:54:13 -634
Fall River/Burney 05:40:54 -47.8 Dark Up 59.6 226.8 Up 05:25:54 - 05:55:54 -640
SwRI 05:39:13 -58.4 Dark Up 50.1 247.5 Up 05:24:13 - 05:54:13 -645
Susanville 05:40:48 -48.6 Dark Up 59.6 228.7 Up 05:25:48 - 05:55:48 -703
Greenville 05:40:49 -48.5 Dark Up 60.0 228.6 Up 05:25:49 - 05:55:49 -732
Gimple 05:40:49 -48.5 Dark Up 59.9 228.8 Up 05:25:49 - 05:55:49 -732
Quincy 05:40:49 -48.6 Dark Up 60.1 228.9 Up 05:25:49 - 05:55:49 -753
Portola 05:40:46 -48.9 Dark Up 59.9 229.8 Up 05:25:46 - 05:55:46 -764
Reno 05:40:41 -49.5 Dark Up 59.7 231.1 Up 05:25:41 - 05:55:41 -790
Carson City 05:40:40 -49.7 Dark Up 59.9 231.6 Up 05:25:40 - 05:55:40 -827
Yerington 05:40:36 -50.2 Dark Up 59.7 232.7 Up 05:25:36 - 05:55:36 -845
Gardnerville 05:40:40 -49.8 Dark Up 60.0 232.0 Up 05:25:40 - 05:55:40 -852
Hawthorne 05:40:32 -50.7 Dark Up 59.6 234.1 Up 05:25:32 - 05:55:32 -891
Tonopah 05:40:22 -51.9 Dark Up 59.0 236.6 Up 05:25:22 - 05:55:22 -933
Lee Vining 05:40:34 -50.6 Dark Up 60.2 234.2 Up 05:25:34 - 05:55:34 -952
Bishop 05:40:28 -51.4 Dark Up 60.1 236.0 Up 05:25:28 - 05:55:28 -1011
Beatty 05:40:16 -52.7 Dark Up 59.3 238.8 Up 05:25:16 - 05:55:16 -1052
Indian Springs 05:40:09 -53.6 Dark Up 58.8 240.6 Up 05:25:09 - 05:55:09 -1081
Henderson 05:40:03 -54.3 Dark Up 58.5 242.2 Up 05:25:03 - 05:55:03 -1134
Patrick 05:39:55 -55.4 Dark Up 58.0 244.4 Up 05:24:55 - 05:54:55 -1193
Searchlight/Boulder City 05:40:02 -54.6 Dark Up 58.8 243.1 Up 05:25:02 - 05:55:02 -1194
Kingman/Dolan Springs 05:39:56 -55.3 Dark Up 58.3 244.5 Up 05:24:56 - 05:54:56 -1218
DCO 05:39:50 -56.0 Dark Up 57.6 245.6 Up 05:24:50 - 05:54:50 -1221
Laughlin/Bullhead City 05:39:59 -55.0 Dark Up 58.6 244.0 Up 05:24:59 - 05:54:59 -1223
CPSLO 05:40:41 -50.4 Dark Up 62.8 236.0 Up 05:25:41 - 05:55:41 -1237
Mohave Valley 05:39:59 -55.1 Dark Up 58.8 244.4 Up 05:24:59 - 05:54:59 -1252
Lake Havasu City 05:39:56 -55.4 Dark Up 58.8 245.2 Up 05:24:56 - 05:54:56 -1293
Parker 05:39:55 -55.6 Dark Up 58.9 245.8 Up 05:24:55 - 05:54:55 -1330
Wildwood 05:40:25 -52.4 Dark Up 62.0 240.8 Up 05:25:25 - 05:55:25 -1358
George/Scottsdale 05:39:38 -57.6 Dark Up 57.2 249.0 Up 05:24:38 - 05:54:38 -1359
Idyllwild 05:40:11 -53.9 Dark Up 60.8 243.7 Up 05:25:11 - 05:55:11 -1387
Blythe 05:39:57 -55.6 Dark Up 59.3 246.3 Up 05:24:57 - 05:54:57 -1388
Calipatria 05:40:02 -55.0 Dark Up 60.2 246.0 Up 05:25:02 - 05:55:02 -1446
Yuma 05:39:55 -55.9 Dark Up 59.7 247.7 Up 05:24:55 - 05:54:55 -1487

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 05:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  6.28  95
Alnath         05:26:17.5 +28:36:23  1.6 12.22  82
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 2020/09/27 19:59:35 UT

Marc W. Buie, Southwest Research Institute

RECON