RECON: TNO occultation with 471155

Event between (471155) 10GF65 and star GA0520:31776400 with event index number of 2237478

Geocentric closest approach at 2026/06/15 09:09:22 UTC

J2000 position of star is 18:34:14.5 -36:09:26
Equinox of date position of star is 18:35:53.4 -36:08:11
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 168 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=20.8

[RECON map]
Object is 22.1 AU from the Sun and 21.2 AU from the Earth.
Apparent velocity is 21.3 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 809 seconds.
The 1-sigma cross-track error in the shadow position is 4321 km.
The sky-plane scale is 15357.0 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=229.1 km assuming a 5% albedo -- 9.9 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471155, (2026/06/15 09:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.0 -26:29:18  0.9 28.24 162
38Zet Sgr      19:04:17.5 -29:50:24  2.7  8.64 164
PPM 297683     18:27:08.5 -35:58:30  5.9  1.80 169
PPM 297905     18:36:44.9 -36:01:50  8.5  0.18 168
471155         18:36:01.4 -36:08:05 16.9       167
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 1.1 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 09:08:51 -17.1 AT Down 5.3 179.1 Really Low 08:53:51 - 09:23:51 10463
Kamloops 09:08:41 -14.6 AT Down 3.2 181.5 Really Low 08:53:41 - 09:23:41 10453
Peachland 09:08:39 -15.3 AT Down 4.1 182.0 Really Low 08:53:39 - 09:23:39 10440
Summerland 09:08:38 -15.5 AT Down 4.2 182.1 Really Low 08:53:38 - 09:23:38 10438
Kelowna 09:08:37 -15.2 AT Down 3.9 182.3 Really Low 08:53:37 - 09:23:37 10438
Penticton 09:08:38 -15.5 AT Down 4.3 182.2 Really Low 08:53:38 - 09:23:38 10436
Oliver 09:08:38 -15.8 AT Down 4.6 182.2 Really Low 08:53:38 - 09:23:38 10433
Anarchist Mountain Observatory 09:08:37 -16.0 AT Down 4.8 182.3 Really Low 08:53:37 - 09:23:37 10430
Manson/Chelan 09:08:40 -17.2 AT Down 5.9 181.7 Really Low 08:53:40 - 09:23:40 10425
Okanogan 09:08:38 -16.6 AT Down 5.4 182.2 Really Low 08:53:38 - 09:23:38 10425
Brewster 09:08:38 -16.9 AT Down 5.7 182.0 Really Low 08:53:38 - 09:23:38 10424
Wenatchee 09:08:41 -17.7 AT Down 6.4 181.6 Really Low 08:53:41 - 09:23:41 10421
Ellensburg 09:08:41 -18.1 Dark Down 6.8 181.4 Really Low 08:53:41 - 09:23:41 10419
Yakima 09:08:41 -18.5 Dark Down 7.2 181.4 Really Low 08:53:41 - 09:23:41 10413
Toppenish/White Swan 09:08:41 -18.7 Dark Down 7.5 181.5 Really Low 08:53:41 - 09:23:41 10408
The Dalles 09:08:43 -19.6 Dark Down 8.2 180.9 Really Low 08:53:43 - 09:23:43 10404
Maupin 09:08:43 -20.0 Dark Down 8.7 181.0 Really Low 08:53:43 - 09:23:43 10396
Sisters 09:08:44 -20.9 Dark Down 9.5 180.6 Really Low 08:53:44 - 09:23:44 10387
PNWRO 09:08:35 -18.8 Dark Down 7.8 182.7 Really Low 08:53:35 - 09:23:35 10386
Bend 09:08:43 -21.1 Dark Down 9.8 180.8 Really Low 08:53:43 - 09:23:43 10380
Oregon Observatory 09:08:44 -21.3 Dark Down 10.0 180.7 Really Low 08:53:44 - 09:23:44 10378
Chiloquin 09:08:46 -22.6 Dark Down 11.3 180.4 Really Low 08:53:46 - 09:23:46 10355
Klamath Falls 09:08:46 -23.0 Dark Down 11.6 180.4 Really Low 08:53:46 - 09:23:46 10347
Fall River/Burney 09:08:44 -24.0 Dark Down 12.8 180.7 Really Low 08:53:44 - 09:23:44 10315
Cedarville 09:08:40 -23.3 Dark Down 12.3 181.7 Really Low 08:53:40 - 09:23:40 10313
Greenville 09:08:43 -24.8 Dark Down 13.7 181.1 Really Low 08:53:43 - 09:23:43 10287
Gimple 09:08:42 -24.8 Dark Down 13.7 181.2 Really Low 08:53:42 - 09:23:42 10286
Quincy 09:08:43 -25.0 Dark Down 13.9 181.1 Really Low 08:53:43 - 09:23:43 10282
Portola 09:08:41 -25.0 Dark Down 14.0 181.5 Really Low 08:53:41 - 09:23:41 10273
Reno 09:08:38 -25.1 Dark Down 14.3 182.0 Really Low 08:53:38 - 09:23:38 10258
Sleaford 09:07:56 -9.9 NT Down 0.6 193.0 Really Low 08:52:56 - 09:22:56 10253
Carson City 09:08:38 -25.5 Dark Down 14.6 182.1 Really Low 08:53:38 - 09:23:38 10248
Gardnerville 09:08:39 -25.7 Dark Down 14.9 182.1 Really Low 08:53:39 - 09:23:39 10240
Yerington 09:08:36 -25.5 Dark Down 14.8 182.6 Really Low 08:53:36 - 09:23:36 10234
Hawthorne 09:08:34 -25.8 Dark Down 15.2 183.0 Really Low 08:53:34 - 09:23:34 10213
Lee Vining 09:08:36 -26.5 Dark Down 15.8 182.6 Really Low 08:53:36 - 09:23:36 10204
Bishop 09:08:33 -26.8 Dark Down 16.4 183.2 Really Low 08:53:33 - 09:23:33 10174
Beatty 09:08:26 -26.8 Dark Down 16.8 184.6 Really Low 08:53:26 - 09:23:26 10135
Wildwood 09:08:34 -30.0 Dark Down 19.7 183.1 Really Low 08:53:34 - 09:23:34 10063
Laughlin/Bullhead City 09:08:18 -27.8 Dark Down 18.3 186.5 Really Low 08:53:18 - 09:23:18 10037
Patrick 09:08:15 -27.3 Dark Down 18.0 187.0 Really Low 08:53:15 - 09:23:15 10034
Idyllwild 09:08:27 -29.8 Dark Down 19.9 184.7 Really Low 08:53:27 - 09:23:27 10021
Dunrhomin 09:07:43 -19.9 Dark Down 12.0 193.9 Really Low 08:52:43 - 09:22:43 10009
Lake Havasu City 09:08:17 -28.3 Dark Down 19.0 186.7 Really Low 08:53:17 - 09:23:17 10008
Nikitin 09:07:44 -20.1 Dark Down 12.2 193.9 Really Low 08:52:44 - 09:22:44 10004
CU-SBO 09:07:44 -20.2 Dark Down 12.3 193.8 Really Low 08:52:44 - 09:22:44 10004
Calipatria 09:08:21 -30.0 Dark Down 20.4 185.7 Low 08:53:21 - 09:23:21 9975
Yuma 09:08:17 -30.1 Dark Down 20.8 186.5 Low 08:53:17 - 09:23:17 9942
George/Scottsdale 09:08:06 -28.2 Dark Down 19.5 188.8 Really Low 08:53:06 - 09:23:06 9930

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 471155, (2026/06/15 09:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.24 162
38Zet Sgr      19:02:36.7 -29:52:49  2.7  8.64 164
PPM 297683     18:25:21.6 -35:59:31  5.9  1.80 169
PPM 297905     18:34:58.1 -36:03:12  8.5  0.18 168
471155         18:34:14.5 -36:09:26 16.9       168
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:27:06 UT

Marc W. Buie, Southwest Research Institute

RECON