RECON: TNO occultation with 14XU40

Event between 14XU40 and star GA1120:01647654 with event index number of 1497914

Geocentric closest approach at 2026/01/19 06:01:36 UTC

J2000 position of star is 05:58:59.7 +22:24:14
Equinox of date position of star is 06:00:09.4 +22:24:15
Stellar brightness G=15.6, use SENSEUP=128
Star is 146 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 33.5 AU from the Sun and 32.6 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 115 seconds.
The 1-sigma cross-track error in the shadow position is 1195 km.
The sky-plane scale is 23654.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 10.9 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14XU40, (2026/01/19 06:02UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:35.0 +07:24:35  0.4 15.03 140
Alnath         05:27:56.5 +28:37:38  1.6  9.63 139
PPM 095249     06:03:16.1 +22:23:58  6.2  0.62 146
PPM 095201     06:01:16.9 +22:28:14  7.7  0.18 146
14XU40         06:00:34.1 +22:24:15 15.6       146
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 22.3 km RECON observability=1.0 and success probability=38.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:01:36 -51.3 Dark Down 62.5 179.8 Up 05:51:32 - 06:11:41 1505
Summerland 06:01:37 -51.3 Dark Down 62.8 179.3 Up 05:51:33 - 06:11:42 1476
Penticton 06:01:37 -51.4 Dark Down 62.9 179.5 Up 05:51:32 - 06:11:41 1469
Okanagan Falls 06:01:37 -51.5 Dark Down 63.1 179.4 Up 05:51:33 - 06:11:42 1451
Oliver 06:01:37 -51.6 Dark Down 63.2 179.5 Up 05:51:32 - 06:11:41 1435
Anarchist Mountain Observatory 06:01:36 -51.8 Dark Down 63.4 179.9 Up 05:51:32 - 06:11:41 1417
Oroville 06:01:37 -51.8 Dark Down 63.5 179.7 Up 05:51:32 - 06:11:41 1410
Tonasket 06:01:36 -52.0 Dark Down 63.7 179.7 Up 05:51:32 - 06:11:41 1387
Okanogan 06:01:37 -52.1 Dark Down 64.0 179.4 Up 05:51:33 - 06:11:42 1353
Brewster 06:01:38 -52.1 Dark Down 64.3 179.0 Up 05:51:33 - 06:11:42 1326
Manson/Chelan 06:01:39 -52.1 Dark Down 64.5 178.2 Up 05:51:35 - 06:11:44 1306
Entiat 06:01:40 -52.1 Dark Down 64.7 178.0 Up 05:51:35 - 06:11:44 1284
Wenatchee 06:01:40 -52.2 Dark Down 65.0 177.8 Up 05:51:35 - 06:11:44 1258
Ellensburg 06:01:41 -52.3 Dark Down 65.4 177.3 Up 05:51:36 - 06:11:45 1217
Yakima 06:01:41 -52.6 Dark Down 65.8 177.2 Up 05:51:36 - 06:11:45 1176
Toppenish/White Swan 06:01:40 -52.8 Dark Down 66.0 177.6 Up 05:51:36 - 06:11:45 1154
Pasco 06:01:36 -53.6 Dark Down 66.2 180.4 Up 05:51:31 - 06:11:40 1140
PNWRO 06:01:35 -53.8 Dark Down 66.4 180.9 Up 05:51:30 - 06:11:39 1114
George/Umatilla 06:01:37 -53.6 Dark Down 66.5 179.9 Up 05:51:32 - 06:11:41 1106
Goldendale 06:01:42 -52.8 Dark Down 66.6 176.5 Up 05:51:37 - 06:11:46 1098
The Dalles 06:01:43 -52.7 Dark Down 66.8 175.6 Up 05:51:39 - 06:11:48 1076
Maupin 06:01:43 -53.0 Dark Down 67.2 175.8 Up 05:51:38 - 06:11:47 1033
Madras/Culver 06:01:43 -53.3 Dark Down 67.7 175.6 Up 05:51:39 - 06:11:48 976
Sisters 06:01:45 -53.2 Dark Down 68.0 174.5 Up 05:51:40 - 06:11:49 943
Redmond 06:01:43 -53.4 Dark Down 68.1 175.4 Up 05:51:39 - 06:11:48 940
Bend 06:01:44 -53.4 Dark Down 68.3 175.0 Up 05:51:39 - 06:11:48 918
Oregon Observatory 06:01:44 -53.4 Dark Down 68.4 174.7 Up 05:51:40 - 06:11:49 900
La Pine/Gilchrist 06:01:45 -53.5 Dark Down 68.6 174.5 Up 05:51:40 - 06:11:49 879
North Lake 06:01:43 -54.1 Dark Down 69.1 175.9 Up 05:51:38 - 06:11:47 833
Paisley 06:01:41 -54.6 Dark Down 69.7 176.8 Up 05:51:37 - 06:11:46 775
Chiloquin 06:01:46 -53.8 Dark Down 69.7 173.3 Up 05:51:42 - 06:11:51 764
Klamath Falls 06:01:46 -54.0 Dark Down 70.1 173.4 Up 05:51:42 - 06:11:51 728
Lakeview 06:01:41 -55.0 Dark Down 70.2 177.2 Up 05:51:36 - 06:11:45 722
Tulelake 06:01:45 -54.3 Dark Down 70.4 174.1 Up 05:51:40 - 06:11:49 700
Cedarville 06:01:40 -55.4 Dark Down 70.9 177.6 Up 05:51:35 - 06:11:44 653
Fall River/Burney 06:01:45 -54.8 Dark Down 71.3 174.1 Up 05:51:40 - 06:11:49 604
Niwot 06:00:41 -65.1 Dark Down 68.7 217.8 Up 05:50:36 - 06:10:45 544
Susanville 06:01:42 -55.6 Dark Down 72.0 176.0 Up 05:51:38 - 06:11:47 536
SwRI 06:00:41 -65.1 Dark Down 68.9 217.7 Up 05:50:37 - 06:10:46 533
Greenville 06:01:43 -55.5 Dark Down 72.2 175.1 Up 05:51:39 - 06:11:48 508
Gimple 06:01:43 -55.5 Dark Down 72.2 175.3 Up 05:51:38 - 06:11:47 507
Quincy 06:01:43 -55.6 Dark Down 72.4 175.1 Up 05:51:39 - 06:11:48 486
Portola 06:01:41 -55.9 Dark Down 72.6 176.5 Up 05:51:37 - 06:11:46 472
Reno 06:01:39 -56.5 Dark Down 72.9 178.4 Up 05:51:34 - 06:11:43 443
Carson City 06:01:39 -56.7 Dark Down 73.2 178.5 Up 05:51:34 - 06:11:43 405
Yerington 06:01:36 -57.2 Dark Down 73.4 180.5 Up 05:51:32 - 06:11:41 384
Gardnerville 06:01:38 -56.8 Dark Down 73.5 178.6 Up 05:51:34 - 06:11:43 379
Hawthorne 06:01:34 -57.8 Dark Down 73.9 182.2 Up 05:51:30 - 06:11:39 334
Tonopah 06:01:28 -59.0 Dark Down 74.2 187.0 Up 05:51:24 - 06:11:33 284
Lee Vining 06:01:36 -57.7 Dark Down 74.4 180.6 Up 05:51:32 - 06:11:41 274
Bishop 06:01:33 -58.4 Dark Down 75.0 183.2 Up 05:51:29 - 06:11:38 209
Beatty 06:01:26 -59.8 Dark Down 75.3 189.2 Up 05:51:22 - 06:11:31 160
Lone Pine 06:01:32 -59.0 Dark Down 75.8 184.6 Up 05:51:27 - 06:11:36 127
Indian Springs 06:01:22 -60.7 Dark Down 75.5 193.3 Up 05:51:17 - 06:11:26 125
Henderson 06:01:19 -61.4 Dark Down 75.9 196.3 Up 05:51:14 - 06:11:23 69
Searchlight/Boulder City 06:01:18 -61.7 Dark Down 76.4 197.2 Up 05:51:14 - 06:11:23 7
Patrick 06:01:14 -62.5 Dark Down 76.2 201.1 Up 05:51:09 - 06:11:18 3
CPSLO 06:01:43 -57.5 Dark Down 77.0 174.5 Up 05:51:38 - 06:11:47 -10
Kingman/Dolan Springs 06:01:15 -62.5 Dark Down 76.4 200.8 Up 05:51:10 - 06:11:19 -21
Laughlin/Bullhead City 06:01:17 -62.1 Dark Down 76.6 198.9 Up 05:51:12 - 06:11:21 -25
DCO 06:01:11 -63.1 Dark Down 76.2 204.2 Up 05:51:06 - 06:11:15 -28
Mohave Valley 06:01:17 -62.2 Dark Down 76.9 199.3 Up 05:51:12 - 06:11:21 -54
Lake Havasu City 06:01:16 -62.5 Dark Down 77.2 200.8 Up 05:51:11 - 06:11:20 -97
Parker 06:01:15 -62.7 Dark Down 77.5 201.5 Up 05:51:11 - 06:11:20 -135
Wildwood 06:01:34 -59.5 Dark Down 78.3 183.2 Up 05:51:30 - 06:11:39 -144
Idyllwild 06:01:26 -61.0 Dark Down 78.5 191.8 Up 05:51:21 - 06:11:30 -183
Blythe 06:01:17 -62.7 Dark Down 78.1 201.2 Up 05:51:12 - 06:11:21 -193
Calipatria 06:01:21 -62.2 Dark Down 78.8 197.9 Up 05:51:16 - 06:11:25 -248
Yuma 06:01:17 -63.0 Dark Down 78.9 202.7 Up 05:51:12 - 06:11:21 -294

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 14XU40, (2026/01/19 06:02UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.03 140
Alnath         05:26:17.5 +28:36:23  1.6  9.63 139
PPM 095249     06:01:41.6 +22:24:04  6.2  0.62 146
PPM 095201     05:59:42.4 +22:28:15  7.7  0.18 146
14XU40         05:58:59.7 +22:24:14 15.6       146
Positions are for J2000

Event circumstances last updated at 2019/03/25 01:14:01 UT

Marc W. Buie, Southwest Research Institute

RECON