RECON: TNO occultation with 07LG38

Event between 07LG38 and star GA0880:09020533 with event index number of 2025337

Geocentric closest approach at 2026/08/11 07:18:12 UTC

J2000 position of star is 18:45:17.3 -01:41:33
Equinox of date position of star is 18:46:26.7 -01:40:04
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 151 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=24.0

[RECON map]
TNO is 37.6 AU from the Sun and 36.8 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 335 seconds.
The 1-sigma cross-track error in the shadow position is 4305 km.
The sky-plane scale is 26684.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=134.9 km assuming a 5% albedo -- 6.5 sec chord
Diameter=55.1 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 07LG38, (2026/08/11 07:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.6 -26:29:19  0.9 40.93 131
60Bet Oph      17:44:47.3 +04:33:29  2.8 16.66 135
5 Aql          18:47:51.0 -00:55:53  6.2  0.79 150
PPM 180420     18:45:35.6 -01:31:32  8.4  0.30 151
PPM 180423     18:45:59.8 -01:45:42  9.4  0.19 151
PPM 180422     18:45:57.1 -01:39:39 10.1  0.18 151
07LG38         18:46:40.2 -01:39:47 15.4       151
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 2.7 sigma about the mid-time.
The median site spacing is 23.8 km RECON observability=1.0 and success probability=11.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:14:56 -23.1 Dark Down 32.9 212.5 Up 06:59:56 - 07:29:56 1063
Victoria 07:15:06 -24.7 Dark Down 35.7 209.8 Up 07:00:06 - 07:30:06 994
Peachland 07:14:55 -24.1 Dark Down 33.4 213.5 Up 06:59:55 - 07:29:55 971
Kelowna 07:14:54 -24.0 Dark Down 33.2 213.8 Up 06:59:54 - 07:29:54 970
Summerland 07:14:54 -24.3 Dark Down 33.5 213.6 Up 06:59:54 - 07:29:54 956
Penticton 07:14:54 -24.3 Dark Down 33.5 213.8 Up 06:59:54 - 07:29:54 947
Oliver 07:14:55 -24.7 Dark Down 33.8 213.9 Up 06:59:55 - 07:29:55 918
Anarchist Mountain Observatory 07:14:54 -24.9 Dark Down 33.9 214.2 Up 06:59:54 - 07:29:54 899
Tonasket 07:14:54 -25.2 Dark Down 34.2 214.2 Up 06:59:54 - 07:29:54 876
Okanogan 07:14:55 -25.5 Dark Down 34.5 214.2 Up 06:59:55 - 07:29:55 853
Brewster 07:14:55 -25.7 Dark Down 34.8 214.1 Up 06:59:55 - 07:29:55 838
Manson/Chelan 07:14:57 -25.9 Dark Down 35.1 213.7 Up 06:59:57 - 07:29:57 833
Wenatchee 07:14:57 -26.3 Dark Down 35.6 213.7 Up 06:59:57 - 07:29:57 800
Ellensburg 07:14:57 -26.7 Dark Down 36.0 213.6 Up 06:59:57 - 07:29:57 774
Sleaford 07:14:22 -22.7 Dark Down 26.1 227.0 Low 06:59:22 - 07:29:22 755
Yakima 07:14:58 -27.1 Dark Down 36.3 213.8 Up 06:59:58 - 07:29:58 741
Toppenish/White Swan 07:14:57 -27.3 Dark Down 36.5 214.1 Up 06:59:57 - 07:29:57 718
Goldendale 07:14:59 -27.8 Dark Down 37.1 213.8 Up 06:59:59 - 07:29:59 687
The Dalles 07:14:59 -27.9 Dark Down 37.4 213.5 Up 06:59:59 - 07:29:59 681
Maupin 07:15:00 -28.3 Dark Down 37.7 213.8 Up 07:00:00 - 07:30:00 643
PNWRO 07:14:53 -27.9 Dark Down 36.2 215.9 Up 06:59:53 - 07:29:53 635
Sisters 07:15:01 -29.1 Dark Down 38.6 213.6 Up 07:00:01 - 07:30:01 587
Bend 07:15:01 -29.4 Dark Down 38.7 214.0 Up 07:00:01 - 07:30:01 558
Oregon Observatory 07:15:01 -29.5 Dark Down 38.9 213.9 Up 07:00:01 - 07:30:01 548
North Lake 07:15:00 -30.2 Dark Down 39.2 214.9 Up 07:00:00 - 07:30:00 474
Chiloquin 07:15:03 -30.7 Dark Down 40.2 214.1 Up 07:00:03 - 07:30:03 452
Klamath Falls 07:15:03 -31.0 Dark Down 40.4 214.3 Up 07:00:03 - 07:30:03 419
Lakeview 07:14:58 -31.4 Dark Down 39.9 216.0 Up 06:59:58 - 07:29:58 363
Fall River/Burney 07:15:02 -32.3 Dark Down 41.2 215.4 Up 07:00:02 - 07:30:02 303
Cedarville 07:14:58 -32.0 Dark Down 40.3 216.6 Up 06:59:58 - 07:29:58 299
Susanville 07:15:00 -33.0 Dark Down 41.4 216.6 Up 07:00:00 - 07:30:00 220
Greenville 07:15:01 -33.2 Dark Down 41.8 216.4 Up 07:00:01 - 07:30:01 207
Gimple 07:15:01 -33.2 Dark Down 41.7 216.5 Up 07:00:01 - 07:30:01 204
Quincy 07:15:02 -33.4 Dark Down 41.9 216.5 Up 07:00:02 - 07:30:02 189
Portola 07:15:00 -33.6 Dark Down 41.8 217.1 Up 07:00:00 - 07:30:00 160
Reno 07:14:58 -34.0 Dark Down 41.7 218.0 Up 06:59:58 - 07:29:58 111
Carson City 07:14:58 -34.4 Dark Down 42.0 218.2 Up 06:59:58 - 07:29:58 79
Gardnerville 07:14:58 -34.6 Dark Down 42.2 218.4 Up 06:59:58 - 07:29:58 55
Yerington 07:14:57 -34.7 Dark Down 41.9 219.1 Up 06:59:57 - 07:29:57 37
Hawthorne 07:14:55 -35.2 Dark Down 42.0 220.0 Up 06:59:55 - 07:29:55 -25
Lee Vining 07:14:57 -35.7 Dark Down 42.6 219.7 Up 06:59:57 - 07:29:57 -57
Tonopah 07:14:51 -35.9 Dark Down 41.6 221.8 Up 06:59:51 - 07:29:51 -122
Bishop 07:14:55 -36.4 Dark Down 42.7 220.9 Up 06:59:55 - 07:29:55 -140
Beatty 07:14:50 -37.1 Dark Down 42.2 223.1 Up 06:59:50 - 07:29:50 -246
Indian Springs 07:14:47 -37.6 Dark Down 41.8 224.5 Up 06:59:47 - 07:29:47 -319
Dunrhomin 07:14:16 -34.5 Dark Down 33.3 232.9 Up 06:59:16 - 07:29:16 -347
CU-SBO 07:14:16 -34.7 Dark Down 33.5 233.0 Up 06:59:16 - 07:29:16 -368
Henderson 07:14:45 -38.2 Dark Down 41.8 225.6 Up 06:59:45 - 07:29:45 -395
Wildwood 07:14:58 -39.5 Dark Down 45.3 222.8 Up 06:59:58 - 07:29:58 -433
Laughlin/Bullhead City 07:14:45 -39.1 Dark Down 42.2 226.6 Up 06:59:45 - 07:29:45 -493
Patrick 07:14:42 -39.0 Dark Down 41.6 227.2 Up 06:59:42 - 07:29:42 -498
Kingman/Dolan Springs 07:14:42 -39.2 Dark Down 41.9 227.1 Up 06:59:42 - 07:29:42 -511
Mohave Valley 07:14:45 -39.4 Dark Down 42.4 226.8 Up 06:59:45 - 07:29:45 -520
Idyllwild 07:14:52 -40.2 Dark Down 44.4 225.2 Up 06:59:52 - 07:29:52 -543
Lake Havasu City 07:14:44 -39.8 Dark Down 42.5 227.3 Up 06:59:44 - 07:29:44 -567
Parker 07:14:44 -40.2 Dark Down 42.7 227.6 Up 06:59:44 - 07:29:44 -602
Calipatria 07:14:49 -41.0 Dark Down 44.2 226.9 Up 06:59:49 - 07:29:49 -650
Yuma 07:14:47 -41.6 Dark Down 43.9 228.2 Up 06:59:47 - 07:29:47 -727
George/Scottsdale 07:14:37 -40.9 Dark Down 41.5 230.4 Up 06:59:37 - 07:29:37 -737

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 07LG38, (2026/08/11 07:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 40.93 131
60Bet Oph      17:43:28.3 +04:34:06  2.8 16.66 135
5 Aql          18:46:28.6 -00:57:42  6.2  0.79 150
PPM 180420     18:44:12.8 -01:33:16  8.4  0.30 151
PPM 180423     18:44:36.9 -01:47:27  9.4  0.19 151
PPM 180422     18:44:34.2 -01:41:24 10.1  0.18 151
07LG38         18:45:17.3 -01:41:33 15.4       151
Positions are for J2000

Event circumstances last updated at 2022/04/21 23:09:17 UT

Marc W. Buie, Southwest Research Institute

RECON