RECON: TNO occultation with 470308

Event between (470308) 07JH43 and star GA0620:13936049 with event index number of 2220376

Geocentric closest approach at 2026/07/10 04:10:43 UTC

J2000 position of star is 17:09:25.8 -27:52:51
Equinox of date position of star is 17:10:57.9 -27:54:37
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 150 degrees from the moon. Moon is 25% 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 21.3 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is 1736 km.
The sky-plane scale is 28735.9 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=758.6 km assuming a 5% albedo -- 30.8 sec chord
Diameter=309.7 km assuming a 30% albedo -- 12.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 470308, (2026/07/10 04:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.3 -26:29:19  0.9  9.02 159
23Tau Sco      16:37:32.3 -28:16:07  2.8  7.41 157
PPM 266416     17:08:32.0 -26:32:47  6.3  1.48 151
PPM 266467     17:10:43.7 -27:55:37  8.3  0.08 150
470308         17:11:05.7 -27:54:46 16.7       150
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 **** km RECON observability=0.1 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)
Sleaford 04:11:45 -6.2 NT Down 9.3 169.1 Really Low 04:00:40 - 04:22:49 7053
Kamloops 04:12:29 -0.8 Sun up Down 8.0 156.5 Really Low 04:01:25 - 04:23:34 6789
Kelowna 04:12:28 -1.7 CT Down 9.0 157.3 Really Low 04:01:24 - 04:23:33 6783
Peachland 04:12:29 -1.6 CT Down 9.0 157.0 Really Low 04:01:25 - 04:23:34 6774
Penticton 04:12:29 -1.9 CT Down 9.3 157.2 Really Low 04:01:24 - 04:23:33 6771
Summerland 04:12:29 -1.8 CT Down 9.2 157.1 Really Low 04:01:25 - 04:23:34 6771
Oliver 04:12:29 -2.1 CT Down 9.6 157.1 Really Low 04:01:25 - 04:23:34 6760
Anarchist Mountain Observatory 04:12:29 -2.3 CT Down 9.8 157.3 Really Low 04:01:25 - 04:23:34 6759
Okanogan 04:12:31 -2.6 CT Down 10.3 157.1 Really Low 04:01:26 - 04:23:35 6733
Brewster 04:12:32 -2.6 CT Down 10.5 156.9 Really Low 04:01:28 - 04:23:37 6720
Manson/Chelan 04:12:33 -2.6 CT Down 10.6 156.5 Really Low 04:01:29 - 04:23:38 6705
Wenatchee 04:12:35 -2.8 CT Down 11.0 156.4 Really Low 04:01:30 - 04:23:39 6685
Dunrhomin 04:11:50 -15.5 AT Down 21.0 169.2 Low 04:00:45 - 04:22:54 6680
Nikitin 04:11:50 -15.6 AT Down 21.2 169.1 Low 04:00:46 - 04:22:55 6672
CU-SBO 04:11:50 -15.7 AT Down 21.3 169.0 Low 04:00:46 - 04:22:55 6668
Ellensburg 04:12:35 -2.9 CT Down 11.4 156.1 Really Low 04:01:31 - 04:23:40 6666
PNWRO 04:12:32 -4.4 CT Down 12.7 157.5 Really Low 04:01:28 - 04:23:37 6665
Victoria 04:12:42 -0.5 Sun up Down 9.2 153.8 Really Low 04:01:38 - 04:23:47 6658
Yakima 04:12:37 -3.2 CT Down 11.7 156.1 Really Low 04:01:32 - 04:23:41 6651
Toppenish/White Swan 04:12:37 -3.4 CT Down 12.0 156.2 Really Low 04:01:32 - 04:23:41 6647
The Dalles 04:12:40 -3.4 CT Down 12.5 155.5 Really Low 04:01:36 - 04:23:45 6600
Maupin 04:12:41 -3.7 CT Down 12.9 155.5 Really Low 04:01:36 - 04:23:45 6587
Sisters 04:12:44 -4.0 CT Down 13.5 155.1 Really Low 04:01:39 - 04:23:48 6541
Bend 04:12:43 -4.3 CT Down 13.8 155.2 Really Low 04:01:39 - 04:23:48 6537
Oregon Observatory 04:12:44 -4.3 CT Down 13.9 155.1 Really Low 04:01:39 - 04:23:48 6527
Chiloquin 04:12:47 -4.9 CT Down 15.0 154.6 Really Low 04:01:43 - 04:23:52 6462
Cedarville 04:12:43 -6.5 NT Down 16.5 155.9 Really Low 04:01:39 - 04:23:48 6455
Klamath Falls 04:12:47 -5.1 CT Down 15.3 154.7 Really Low 04:01:43 - 04:23:52 6449
Fall River/Burney 04:12:47 -6.0 NT Down 16.5 154.8 Really Low 04:01:42 - 04:23:51 6404
Gimple 04:12:47 -6.9 NT Down 17.5 155.2 Really Low 04:01:43 - 04:23:52 6374
Greenville 04:12:47 -6.9 NT Down 17.5 155.1 Really Low 04:01:43 - 04:23:52 6372
Reno 04:12:45 -7.9 NT Down 18.4 156.0 Really Low 04:01:40 - 04:23:49 6371
Portola 04:12:46 -7.4 NT Down 17.9 155.5 Really Low 04:01:42 - 04:23:51 6368
Quincy 04:12:48 -7.0 NT Down 17.7 155.1 Really Low 04:01:43 - 04:23:52 6363
Yerington 04:12:42 -8.6 NT Down 19.1 156.5 Really Low 04:01:38 - 04:23:47 6359
Carson City 04:12:45 -8.1 NT Down 18.7 156.0 Really Low 04:01:40 - 04:23:49 6354
Hawthorne 04:12:41 -9.3 NT Down 19.7 156.9 Really Low 04:01:37 - 04:23:46 6348
Gardnerville 04:12:45 -8.3 NT Down 19.0 156.0 Really Low 04:01:40 - 04:23:49 6343
Lee Vining 04:12:43 -9.3 NT Down 20.1 156.4 Low 04:01:39 - 04:23:48 6310
Beatty 04:12:37 -11.4 NT Down 21.8 158.3 Low 04:01:32 - 04:23:41 6309
Bishop 04:12:42 -10.1 NT Down 20.8 156.9 Low 04:01:37 - 04:23:46 6295
Patrick 04:12:27 -14.1 AT Down 24.0 160.7 Low 04:01:22 - 04:23:31 6293
Laughlin/Bullhead City 04:12:30 -13.9 AT Down 24.0 160.0 Low 04:01:25 - 04:23:34 6264
George/Scottsdale 04:12:20 -16.5 AT Down 26.1 162.3 Low 04:01:16 - 04:23:25 6242
Lake Havasu City 04:12:30 -14.5 AT Down 24.7 160.1 Low 04:01:25 - 04:23:34 6234
Idyllwild 04:12:39 -13.5 AT Down 24.7 157.9 Low 04:01:35 - 04:23:44 6139
Calipatria 04:12:35 -14.6 AT Down 25.6 158.8 Low 04:01:30 - 04:23:39 6130
Yuma 04:12:32 -15.4 AT Down 26.3 159.6 Low 04:01:28 - 04:23:37 6125
Wildwood 04:12:46 -12.0 AT Down 23.8 156.2 Low 04:01:42 - 04:23:51 6114

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, (2026/07/10 04:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.02 159
23Tau Sco      16:35:52.9 -28:12:58  2.8  7.41 157
PPM 266416     17:06:53.2 -26:30:47  6.3  1.48 151
PPM 266467     17:09:03.8 -27:53:42  8.3  0.08 150
470308         17:09:25.8 -27:52:51 16.7       150
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:31:43 UT

Marc W. Buie, Southwest Research Institute

RECON