RECON: TNO occultation with 07LG38

Event between 07LG38 and star GA0880:09020533 with event index number of 1545738

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 18:46:18.3 -01:40:15
Stellar brightness G=15.4, use SENSEUP=128
Star is 151 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=24.1

[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 4306 km.
The sky-plane scale is 26684.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=150.7 km assuming a 5% albedo -- 6.4 sec chord
Diameter=61.5 km assuming a 30% albedo -- 2.6 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 +04:33:28  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 21.1 km RECON observability=1.0 and success probability=11.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:14:54 -24.0 Dark Down 33.2 213.8 Up 06:59:54 - 07:29:54 970
Summerland 07:14:55 -24.3 Dark Down 33.5 213.6 Up 06:59:55 - 07:29:55 956
Penticton 07:14:55 -24.3 Dark Down 33.5 213.8 Up 06:59:55 - 07:29:55 947
Okanagan Falls 07:14:54 -24.5 Dark Down 33.7 213.8 Up 06:59:54 - 07:29:54 932
Oliver 07:14:54 -24.7 Dark Down 33.8 213.9 Up 06:59:54 - 07:29:54 918
Anarchist Mountain Observatory 07:14:53 -24.9 Dark Down 33.9 214.2 Up 06:59:53 - 07:29:53 898
Oroville 07:14:54 -24.9 Dark Down 34.0 214.1 Up 06:59:54 - 07:29:54 895
Tonasket 07:14:54 -25.2 Dark Down 34.2 214.2 Up 06:59:54 - 07:29:54 876
Okanogan 07:14:54 -25.5 Dark Down 34.5 214.2 Up 06:59:54 - 07:29:54 853
Brewster 07:14:55 -25.7 Dark Down 34.8 214.1 Up 06:59:55 - 07:29:55 838
Manson/Chelan 07:14:56 -25.9 Dark Down 35.1 213.7 Up 06:59:56 - 07:29:56 833
Wenatchee 07:14:57 -26.3 Dark Down 35.6 213.7 Up 06:59:57 - 07:29:57 801
Ellensburg 07:14:58 -26.7 Dark Down 36.0 213.6 Up 06:59:58 - 07:29:58 774
Yakima 07:14:57 -27.1 Dark Down 36.3 213.8 Up 06:59:57 - 07:29:57 741
Toppenish/White Swan 07:14:57 -27.3 Dark Down 36.5 214.1 Up 06:59:57 - 07:29:57 718
Goldendale 07:14:58 -27.8 Dark Down 37.1 213.8 Up 06:59:58 - 07:29:58 687
The Dalles 07:15:00 -27.9 Dark Down 37.4 213.5 Up 07:00:00 - 07:30:00 681
Pasco 07:14:54 -27.6 Dark Down 36.1 215.6 Up 06:59:54 - 07:29:54 664
Maupin 07:14:59 -28.3 Dark Down 37.7 213.8 Up 06:59:59 - 07:29:59 643
PNWRO 07:14:53 -27.9 Dark Down 36.2 215.9 Up 06:59:53 - 07:29:53 635
Madras/Culver 07:15:00 -28.9 Dark Down 38.2 214.0 Up 07:00:00 - 07:30:00 599
Sisters 07:15:01 -29.1 Dark Down 38.6 213.6 Up 07:00:01 - 07:30:01 587
Redmond 07:15:00 -29.2 Dark Down 38.5 214.1 Up 07:00:00 - 07:30:00 570
Bend 07:15:01 -29.4 Dark Down 38.7 214.0 Up 07:00:01 - 07:30:01 557
Oregon Observatory 07:15:01 -29.5 Dark Down 38.9 213.9 Up 07:00:01 - 07:30:01 548
La Pine/Gilchrist 07:15:02 -29.7 Dark Down 39.1 214.0 Up 07:00:02 - 07:30:02 533
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 - 07:30:03 451
Klamath Falls 07:15:03 -31.0 Dark Down 40.4 214.3 Up 07:00:03 - 07:30:03 419
Paisley 07:14:59 -30.8 Dark Down 39.5 215.5 Up 06:59:59 - 07:29:59 413
Tulelake 07:15:02 -31.4 Dark Down 40.5 214.8 Up 07:00:02 - 07:30:02 385
Lakeview 07:14:59 -31.4 Dark Down 39.9 216.0 Up 06:59:59 - 07:29:59 362
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 07:14:59 -34.4 Dark Down 42.0 218.2 Up 06:59:59 - 07:29:59 78
Gardnerville 07:14:59 -34.6 Dark Down 42.2 218.4 Up 06:59:59 - 07:29:59 55
Yerington 07:14:57 -34.7 Dark Down 41.9 219.1 Up 06:59:57 - 07:29:57 36
Hawthorne 07:14:55 -35.2 Dark Down 42.0 220.0 Up 06:59:55 - 07:29:55 -26
Lee Vining 07:14:57 -35.7 Dark Down 42.6 219.7 Up 06:59:57 - 07:29:57 -58
Tonopah 07:14:51 -35.9 Dark Down 41.6 221.8 Up 06:59:51 - 07:29:51 -123
Bishop 07:14:55 -36.4 Dark Down 42.7 220.9 Up 06:59:55 - 07:29:55 -141
Lone Pine 07:14:55 -37.2 Dark Down 43.1 221.8 Up 06:59:55 - 07:29:55 -223
CPSLO 07:15:04 -37.9 Dark Down 45.4 219.6 Up 07:00:04 - 07:30:04 -238
Beatty 07:14:50 -37.1 Dark Down 42.2 223.1 Up 06:59:50 - 07:29:50 -247
Indian Springs 07:14:47 -37.6 Dark Down 41.8 224.5 Up 06:59:47 - 07:29:47 -319
SwRI 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 -396
Wildwood 07:14:58 -39.5 Dark Down 45.3 222.8 Up 06:59:58 - 07:29:58 -434
Searchlight/Boulder City 07:14:45 -38.8 Dark Down 42.2 226.0 Up 06:59:45 - 07:29:45 -452
Laughlin/Bullhead City 07:14:44 -39.1 Dark Down 42.2 226.6 Up 06:59:44 - 07:29:44 -494
Patrick 07:14:42 -39.0 Dark Down 41.6 227.2 Up 06:59:42 - 07:29:42 -498
Kingman/Dolan Springs 07:14:43 -39.2 Dark Down 41.9 227.1 Up 06:59:43 - 07:29:43 -512
Mohave Valley 07:14:45 -39.4 Dark Down 42.4 226.8 Up 06:59:45 - 07:29:45 -520
Idyllwild 07:14:53 -40.2 Dark Down 44.4 225.2 Up 06:59:53 - 07:29:53 -544
Lake Havasu City 07:14:44 -39.8 Dark Down 42.5 227.3 Up 06:59:44 - 07:29:44 -567
Parker 07:14:45 -40.2 Dark Down 42.7 227.6 Up 06:59:45 - 07:29:45 -602
Blythe 07:14:45 -40.7 Dark Down 43.3 227.6 Up 06:59:45 - 07:29:45 -640
Calipatria 07:14:49 -41.0 Dark Down 44.2 226.9 Up 06:59:49 - 07:29:49 -649
Yuma 07:14:47 -41.6 Dark Down 43.9 228.2 Up 06:59:47 - 07:29:47 -727
George/Scottsdale 07:14:36 -40.9 Dark Down 41.5 230.4 Up 06:59:36 - 07:29:36 -738

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 +04:34:05  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 -01:47:26  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 2019/08/06 22:53:34 UT

Marc W. Buie, Southwest Research Institute

RECON