RECON: TNO occultation with 470308

Event between (470308) 07JH43 and star GA0620:14032289 with event index number of 2220371

Geocentric closest approach at 2026/07/06 05:24:48 UTC

J2000 position of star is 17:09:45.2 -27:53:11
Equinox of date position of star is 17:11:17.4 -27:54:56
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 96 degrees from the moon. Moon is 67% illuminated.
Apparent brightness V=20.9

[RECON map]
Object is 40.5 AU from the Sun and 39.6 AU from the Earth.
Apparent velocity is 22.2 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 121 seconds.
The 1-sigma cross-track error in the shadow position is 1790 km.
The sky-plane scale is 28714.2 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=758.6 km assuming a 5% albedo -- 29.5 sec chord
Diameter=309.7 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 470308, (2026/07/06 05:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.2 -26:29:18  0.9  9.09 105
23Tau Sco      16:37:32.3 -28:16:07  2.8  7.48 103
PPM 266416     17:08:32.0 -26:32:47  6.3  1.51  97
PPM 266467     17:10:43.6 -27:55:37  8.3  0.15  96
PPM 266500     17:11:47.1 -27:53:16  9.5  0.09  96
470308         17:11:25.0 -27:55:05 15.0        96
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 12.4 km RECON observability=0.5 and success probability=11.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:25:02 -11.9 NT Down 10.0 181.9 Really Low 05:14:27 - 05:35:36 572
Kamloops 05:25:47 -8.6 NT Down 10.7 169.1 Really Low 05:15:12 - 05:36:21 429
Kelowna 05:25:44 -9.6 NT Down 11.6 169.9 Really Low 05:15:10 - 05:36:19 419
Peachland 05:25:45 -9.5 NT Down 11.7 169.6 Really Low 05:15:11 - 05:36:20 413
Summerland 05:25:45 -9.7 NT Down 11.8 169.7 Really Low 05:15:11 - 05:36:20 410
Penticton 05:25:45 -9.8 NT Down 11.9 169.8 Really Low 05:15:10 - 05:36:19 410
Oliver 05:25:45 -10.1 NT Down 12.3 169.7 Really Low 05:15:10 - 05:36:19 400
Anarchist Mountain Observatory 05:25:45 -10.3 NT Down 12.5 169.9 Really Low 05:15:10 - 05:36:19 399
Okanogan 05:25:46 -10.7 NT Down 13.1 169.7 Really Low 05:15:11 - 05:36:20 377
Brewster 05:25:47 -10.9 NT Down 13.3 169.5 Really Low 05:15:12 - 05:36:21 367
Manson/Chelan 05:25:48 -10.9 NT Down 13.5 169.2 Really Low 05:15:14 - 05:36:23 357
Wenatchee 05:25:49 -11.2 NT Down 13.9 169.0 Really Low 05:15:14 - 05:36:23 341
Victoria 05:25:57 -9.0 NT Down 12.4 166.3 Really Low 05:15:22 - 05:36:31 333
Ellensburg 05:25:50 -11.4 NT Down 14.3 168.8 Really Low 05:15:15 - 05:36:24 325
PNWRO 05:25:45 -12.9 AT Down 15.5 170.2 Really Low 05:15:11 - 05:36:20 314
Yakima 05:25:50 -11.7 NT Down 14.7 168.7 Really Low 05:15:16 - 05:36:25 312
Toppenish/White Swan 05:25:50 -12.0 NT Down 14.9 168.9 Really Low 05:15:15 - 05:36:24 307
The Dalles 05:25:53 -12.3 AT Down 15.6 168.1 Really Low 05:15:18 - 05:36:27 271
Maupin 05:25:53 -12.6 AT Down 16.0 168.2 Really Low 05:15:18 - 05:36:27 259
Sisters 05:25:55 -13.1 AT Down 16.8 167.7 Really Low 05:15:21 - 05:36:30 221
Dunrhomin 05:24:57 -22.9 Dark Down 21.8 182.7 Low 05:14:22 - 05:35:31 218
Bend 05:25:54 -13.4 AT Down 17.1 167.9 Really Low 05:15:20 - 05:36:29 216
Nikitin 05:24:57 -23.0 Dark Down 22.0 182.7 Low 05:14:22 - 05:35:31 211
Oregon Observatory 05:25:55 -13.5 AT Down 17.2 167.8 Really Low 05:15:20 - 05:36:29 208
CU-SBO 05:24:57 -23.0 Dark Down 22.1 182.6 Low 05:14:22 - 05:35:31 208
Chiloquin 05:25:57 -14.3 AT Down 18.4 167.3 Really Low 05:15:22 - 05:36:31 153
Klamath Falls 05:25:57 -14.6 AT Down 18.8 167.4 Really Low 05:15:22 - 05:36:31 141
Cedarville 05:25:52 -15.9 AT Down 19.7 168.8 Really Low 05:15:18 - 05:36:27 135
Fall River/Burney 05:25:57 -15.7 AT Down 20.0 167.7 Low 05:15:22 - 05:36:31 97
Gimple 05:25:55 -16.7 AT Down 21.0 168.1 Low 05:15:21 - 05:36:30 66
Greenville 05:25:56 -16.6 AT Down 21.0 168.0 Low 05:15:21 - 05:36:30 65
Portola 05:25:54 -17.1 AT Down 21.4 168.4 Low 05:15:20 - 05:36:29 58
Quincy 05:25:56 -16.8 AT Down 21.2 168.0 Low 05:15:21 - 05:36:30 56
Reno 05:25:52 -17.6 AT Down 21.7 169.0 Low 05:15:17 - 05:36:26 55
Carson City 05:25:52 -17.9 AT Down 22.1 169.0 Low 05:15:17 - 05:36:26 40
Yerington 05:25:50 -18.4 Dark Down 22.3 169.6 Low 05:15:15 - 05:36:24 40
Gardnerville 05:25:52 -18.2 Dark Down 22.3 169.0 Low 05:15:17 - 05:36:26 30
Hawthorne 05:25:48 -19.0 Dark Down 22.9 170.0 Low 05:15:13 - 05:36:22 26
Lee Vining 05:25:50 -19.2 Dark Down 23.4 169.5 Low 05:15:15 - 05:36:24 -6
Bishop 05:25:47 -20.0 Dark Down 24.1 170.2 Low 05:15:13 - 05:36:22 -25
Beatty 05:25:41 -21.2 Dark Down 24.7 171.7 Low 05:15:07 - 05:36:16 -27
Patrick 05:25:30 -23.7 Dark Down 26.5 174.4 Low 05:14:56 - 05:36:05 -67
Laughlin/Bullhead City 05:25:33 -23.6 Dark Down 26.7 173.7 Low 05:14:59 - 05:36:08 -87
Lake Havasu City 05:25:32 -24.3 Dark Down 27.3 173.9 Low 05:14:58 - 05:36:07 -119
George/Scottsdale 05:25:22 -26.0 Dark Down 28.3 176.3 Low 05:14:48 - 05:35:57 -134
Idyllwild 05:25:42 -23.8 Dark Down 27.9 171.5 Low 05:15:08 - 05:36:17 -187
Wildwood 05:25:50 -22.5 Dark Down 27.2 169.7 Low 05:15:15 - 05:36:24 -194
Calipatria 05:25:37 -24.8 Dark Down 28.6 172.6 Low 05:15:03 - 05:36:12 -206
Yuma 05:25:34 -25.6 Dark Down 29.1 173.5 Low 05:14:59 - 05:36:08 -219

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 470308, (2026/07/06 05:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.09 105
23Tau Sco      16:35:52.9 -28:12:58  2.8  7.48 103
PPM 266416     17:06:53.2 -26:30:47  6.3  1.51  97
PPM 266467     17:09:03.8 -27:53:42  8.3  0.15  96
PPM 266500     17:10:07.2 -27:51:24  9.5  0.09  96
470308         17:09:45.2 -27:53:11 15.0        96
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:30:06 UT

Marc W. Buie, Southwest Research Institute

RECON