RECON: TNO occultation with 471172

Event between (471172) 10JC80 and star GA0640:25753638 with event index number of 2775280

Geocentric closest approach at 2029/05/26 09:45:23 UTC

J2000 position of star is 18:05:25.7 -25:29:00
Equinox of date position of star is 18:06:56.6 -25:28:47
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 97% illuminated.
Apparent brightness V=21.1

[RECON map]
Object is 31.5 AU from the Sun and 30.6 AU from the Earth.
Apparent velocity is 19.9 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 373 seconds.
The 1-sigma cross-track error in the shadow position is 1206 km.
The sky-plane scale is 22175.5 km/arcsec.

The object has an absolute magnitude Hv=6.1
Diameter=358.1 km assuming a 5% albedo -- 18.1 sec chord
Diameter=146.2 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 471172, (2029/05/26 09:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.9 -26:29:40  0.9 21.57  23
Nunki          18:57:05.2 -26:15:26  2.0 11.23  56
4 Sgr          18:01:35.3 -23:48:57  4.8  2.10  44
PPM 267811     18:06:37.7 -25:36:06  7.6  0.19  45
PPM 267846     18:07:51.6 -25:31:02  9.5  0.14  45
471172         18:07:14.8 -25:28:44 16.8        45
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 2.4 sigma about the mid-time.
The median site spacing is 14.6 km RECON observability=0.6 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 09:45:14 -14.4 AT Up 13.8 178.9 Really Low 09:30:14 - 10:00:14 2814
Kelowna 09:45:10 -14.8 AT Up 14.7 179.7 Really Low 09:30:10 - 10:00:10 2790
Peachland 09:45:12 -15.0 AT Up 14.8 179.5 Really Low 09:30:12 - 10:00:12 2788
Summerland 09:45:12 -15.1 AT Up 14.9 179.6 Really Low 09:30:12 - 10:00:12 2783
Penticton 09:45:11 -15.2 AT Up 15.0 179.7 Really Low 09:30:11 - 10:00:11 2781
Oliver 09:45:11 -15.5 AT Up 15.3 179.7 Really Low 09:30:11 - 10:00:11 2770
Anarchist Mountain Observatory 09:45:10 -15.6 AT Up 15.5 179.8 Really Low 09:30:10 - 10:00:10 2765
Sleaford 09:44:25 -8.5 NT Down 11.6 192.0 Really Low 09:29:25 - 09:59:25 2762
Victoria 09:45:25 -17.1 AT Up 15.9 176.1 Really Low 09:30:25 - 10:00:25 2759
Okanogan 09:45:11 -16.2 AT Up 16.2 179.6 Really Low 09:30:11 - 10:00:11 2746
Brewster 09:45:12 -16.5 AT Up 16.4 179.4 Really Low 09:30:12 - 10:00:12 2738
Manson/Chelan 09:45:14 -16.8 AT Up 16.6 179.1 Really Low 09:30:14 - 10:00:14 2733
Wenatchee 09:45:14 -17.3 AT Up 17.1 178.9 Really Low 09:30:14 - 10:00:14 2718
Ellensburg 09:45:15 -17.7 AT Up 17.5 178.7 Really Low 09:30:15 - 10:00:15 2705
Yakima 09:45:15 -18.1 Dark Up 17.9 178.7 Really Low 09:30:15 - 10:00:15 2691
Toppenish/White Swan 09:45:15 -18.2 Dark Up 18.1 178.9 Really Low 09:30:15 - 10:00:15 2683
PNWRO 09:45:09 -18.1 Dark Up 18.5 180.3 Really Low 09:30:09 - 10:00:09 2666
The Dalles 09:45:18 -19.2 Dark Up 18.9 178.1 Really Low 09:30:18 - 10:00:18 2658
Maupin 09:45:18 -19.5 Dark Up 19.3 178.2 Really Low 09:30:18 - 10:00:18 2643
Sisters 09:45:20 -20.5 Dark Up 20.2 177.7 Low 09:30:20 - 10:00:20 2611
Bend 09:45:19 -20.6 Dark Up 20.4 178.0 Low 09:30:19 - 10:00:19 2602
Oregon Observatory 09:45:19 -20.8 Dark Up 20.6 177.9 Low 09:30:19 - 10:00:19 2595
Chiloquin 09:45:22 -22.1 Dark Up 21.9 177.4 Low 09:30:22 - 10:00:22 2544
Klamath Falls 09:45:21 -22.4 Dark Up 22.3 177.5 Low 09:30:21 - 10:00:21 2529
Cedarville 09:45:15 -22.5 Dark Up 23.0 179.1 Low 09:30:15 - 10:00:15 2495
Fall River/Burney 09:45:20 -23.3 Dark Up 23.4 177.9 Low 09:30:20 - 10:00:20 2477
Greenville 09:45:18 -24.0 Dark Up 24.4 178.3 Low 09:30:18 - 10:00:18 2435
Gimple 09:45:18 -24.0 Dark Up 24.4 178.4 Low 09:30:18 - 10:00:18 2435
Quincy 09:45:19 -24.2 Dark Up 24.6 178.3 Low 09:30:19 - 10:00:19 2426
Portola 09:45:17 -24.1 Dark Up 24.7 178.8 Low 09:30:17 - 10:00:17 2419
Reno 09:45:14 -24.1 Dark Up 25.0 179.4 Low 09:30:14 - 10:00:14 2405
Carson City 09:45:14 -24.5 Dark Up 25.3 179.4 Low 09:30:14 - 10:00:14 2388
Yerington 09:45:11 -24.4 Dark Up 25.5 180.0 Low 09:30:11 - 10:00:11 2376
Gardnerville 09:45:13 -24.7 Dark Up 25.6 179.4 Low 09:30:13 - 10:00:13 2376
Hawthorne 09:45:09 -24.6 Dark Up 26.0 180.6 Low 09:30:09 - 10:00:09 2351
Lee Vining 09:45:11 -25.3 Dark Up 26.6 180.1 Low 09:30:11 - 10:00:11 2326
Dunrhomin 09:44:13 -17.3 AT Up 23.0 193.5 Low 09:29:13 - 09:59:13 2321
Nikitin 09:44:13 -17.5 AT Up 23.2 193.5 Low 09:29:13 - 09:59:13 2313
CU-SBO 09:44:13 -17.6 AT Up 23.3 193.4 Low 09:29:13 - 09:59:13 2311
Bishop 09:45:08 -25.5 Dark Up 27.1 180.8 Low 09:30:08 - 10:00:08 2293
Beatty 09:45:01 -25.3 Dark Up 27.6 182.4 Low 09:30:01 - 10:00:01 2260
Patrick 09:44:48 -25.3 Dark Up 28.9 185.4 Low 09:29:48 - 09:59:48 2163
Laughlin/Bullhead City 09:44:51 -25.8 Dark Up 29.2 184.7 Low 09:29:51 - 09:59:51 2154
Wildwood 09:45:09 -28.4 Dark Up 30.4 180.6 Up 09:30:09 - 10:00:09 2118
Lake Havasu City 09:44:50 -26.3 Dark Up 29.9 185.0 Low 09:29:50 - 09:59:50 2115
Idyllwild 09:45:01 -28.0 Dark Up 30.7 182.6 Up 09:30:01 - 10:00:01 2089
George/Scottsdale 09:44:39 -25.7 Dark Up 30.4 187.5 Up 09:29:39 - 09:59:39 2051
Calipatria 09:44:55 -27.9 Dark Up 31.3 183.8 Up 09:29:55 - 09:59:55 2045
Yuma 09:44:51 -27.9 Dark Up 31.7 184.8 Up 09:29:51 - 09:59:51 2014

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 471172, (2029/05/26 09:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.57  23
Nunki          18:55:15.9 -26:17:49  2.0 11.23  56
4 Sgr          17:59:47.6 -23:48:59  4.8  2.10  44
PPM 267811     18:04:48.5 -25:36:20  7.6  0.19  45
PPM 267846     18:06:02.4 -25:31:20  9.5  0.14  45
471172         18:05:25.7 -25:29:00 16.8        45
Positions are for J2000

Event circumstances last updated at 2024/06/27 21:00:18 UT

Marc W. Buie, Southwest Research Institute

RECON