RECON: TNO occultation with 471172

Event between (471172) 10JC80 and star GA0640:25821617 with event index number of 2752887

Geocentric closest approach at 2029/05/23 08:00:06 UTC

J2000 position of star is 18:05:43.0 -25:28:48
Equinox of date position of star is 18:07:13.9 -25:28:34
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 90 degrees from the moon. Moon is 74% 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 19.2 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 381 seconds.
The 1-sigma cross-track error in the shadow position is 1841 km.
The sky-plane scale is 22193.2 km/arcsec.

The object has an absolute magnitude Hv=6.1
Diameter=358.1 km assuming a 5% albedo -- 18.8 sec chord
Diameter=146.2 km assuming a 30% albedo -- 7.7 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 471172, (2029/05/23 08:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.9 -26:29:40  0.9 21.64  69
Nunki          18:57:05.1 -26:15:26  2.0 11.17 101
4 Sgr          18:01:35.3 -23:48:57  4.8  2.14  89
PPM 267811     18:06:37.7 -25:36:06  7.6  0.24  90
PPM 267846     18:07:51.6 -25:31:02  9.5  0.08  90
471172         18:07:32.0 -25:28:31 15.7        91
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 17.0 km RECON observability=0.3 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 08:00:45 -16.1 AT Up 11.2 165.4 Really Low 07:45:45 - 08:15:45 11240
Kamloops 08:01:34 -18.7 Dark Up 9.3 152.6 Really Low 07:46:34 - 08:16:34 11082
Kelowna 08:01:33 -19.5 Dark Up 10.3 153.3 Really Low 07:46:33 - 08:16:33 11068
Peachland 08:01:34 -19.6 Dark Up 10.3 153.1 Really Low 07:46:34 - 08:16:34 11061
Summerland 08:01:34 -19.7 Dark Up 10.5 153.1 Really Low 07:46:34 - 08:16:34 11058
Penticton 08:01:35 -19.8 Dark Up 10.6 153.2 Really Low 07:46:35 - 08:16:35 11057
Oliver 08:01:35 -20.1 Dark Up 10.9 153.2 Really Low 07:46:35 - 08:16:35 11046
Anarchist Mountain Observatory 08:01:35 -20.3 Dark Up 11.1 153.4 Really Low 07:46:35 - 08:16:35 11043
Okanogan 08:01:37 -21.0 Dark Up 11.6 153.1 Really Low 07:46:37 - 08:16:37 11019
Brewster 08:01:39 -21.2 Dark Up 11.8 152.9 Really Low 07:46:39 - 08:16:39 11007
Manson/Chelan 08:01:40 -21.5 Dark Up 11.9 152.6 Really Low 07:46:40 - 08:16:40 10996
Wenatchee 08:01:41 -21.9 Dark Up 12.2 152.4 Really Low 07:46:41 - 08:16:41 10977
Victoria 08:01:49 -20.8 Dark Up 10.3 149.9 Really Low 07:46:49 - 08:16:49 10974
Ellensburg 08:01:43 -22.3 Dark Up 12.5 152.2 Really Low 07:46:43 - 08:16:43 10959
Yakima 08:01:44 -22.8 Dark Up 12.9 152.1 Really Low 07:46:44 - 08:16:44 10944
PNWRO 08:01:40 -23.3 Dark Up 13.9 153.5 Really Low 07:46:40 - 08:16:40 10944
Toppenish/White Swan 08:01:44 -23.0 Dark Up 13.1 152.2 Really Low 07:46:44 - 08:16:44 10939
The Dalles 08:01:48 -23.7 Dark Up 13.6 151.5 Really Low 07:46:48 - 08:16:48 10898
Maupin 08:01:48 -24.2 Dark Up 14.0 151.5 Really Low 07:46:48 - 08:16:48 10884
Sisters 08:01:53 -25.0 Dark Up 14.6 151.0 Really Low 07:46:53 - 08:16:53 10842
Bend 08:01:51 -25.3 Dark Up 14.9 151.2 Really Low 07:46:51 - 08:16:51 10836
Dunrhomin 08:00:56 -27.3 Dark Up 22.8 165.2 Low 07:45:56 - 08:15:56 10831
Oregon Observatory 08:01:53 -25.5 Dark Up 15.0 151.1 Really Low 07:46:53 - 08:16:53 10827
Nikitin 08:00:57 -27.5 Dark Up 22.9 165.2 Low 07:45:57 - 08:15:57 10822
CU-SBO 08:00:57 -27.6 Dark Up 23.0 165.1 Low 07:45:57 - 08:15:57 10819
Chiloquin 08:01:57 -26.8 Dark Up 16.0 150.5 Really Low 07:46:57 - 08:16:57 10765
Klamath Falls 08:01:58 -27.1 Dark Up 16.3 150.6 Really Low 07:46:58 - 08:16:58 10751
Cedarville 08:01:53 -27.8 Dark Up 17.5 151.8 Really Low 07:46:53 - 08:16:53 10742
Fall River/Burney 08:01:58 -28.3 Dark Up 17.5 150.7 Really Low 07:46:58 - 08:16:58 10702
Gimple 08:01:59 -29.2 Dark Up 18.5 151.0 Really Low 07:46:59 - 08:16:59 10667
Greenville 08:01:59 -29.2 Dark Up 18.4 151.0 Really Low 07:46:59 - 08:16:59 10666
Portola 08:01:58 -29.5 Dark Up 18.9 151.3 Really Low 07:46:58 - 08:16:58 10657
Quincy 08:02:00 -29.4 Dark Up 18.6 150.9 Really Low 07:47:00 - 08:17:00 10656
Reno 08:01:56 -29.8 Dark Up 19.4 151.8 Really Low 07:46:56 - 08:16:56 10654
Carson City 08:01:56 -30.1 Dark Up 19.7 151.8 Really Low 07:46:56 - 08:16:56 10636
Yerington 08:01:55 -30.3 Dark Up 20.1 152.3 Low 07:46:55 - 08:16:55 10636
Gardnerville 08:01:56 -30.4 Dark Up 19.9 151.8 Really Low 07:46:56 - 08:16:56 10625
Hawthorne 08:01:54 -30.8 Dark Up 20.7 152.7 Low 07:46:54 - 08:16:54 10620
Lee Vining 08:01:56 -31.3 Dark Up 21.0 152.2 Low 07:46:56 - 08:16:56 10585
Bishop 08:01:55 -31.9 Dark Up 21.8 152.7 Low 07:46:55 - 08:16:55 10563
Beatty 08:01:48 -32.3 Dark Up 22.8 154.1 Low 07:46:48 - 08:16:48 10560
Patrick 08:01:40 -33.5 Dark Up 25.1 156.4 Low 07:46:40 - 08:16:40 10515
Laughlin/Bullhead City 08:01:42 -33.8 Dark Up 25.1 155.7 Low 07:46:42 - 08:16:42 10493
Lake Havasu City 08:01:43 -34.5 Dark Up 25.8 155.8 Low 07:46:43 - 08:16:43 10458
George/Scottsdale 08:01:33 -34.9 Dark Up 27.3 158.0 Low 07:46:33 - 08:16:33 10441
Idyllwild 08:01:54 -35.4 Dark Up 25.7 153.5 Low 07:46:54 - 08:16:54 10386
Wildwood 08:02:01 -35.2 Dark Up 24.6 151.9 Low 07:47:01 - 08:17:01 10380
Calipatria 08:01:50 -35.9 Dark Up 26.7 154.5 Low 07:46:50 - 08:16:50 10365
Yuma 08:01:46 -36.3 Dark Up 27.4 155.2 Low 07:46:46 - 08:16:46 10350

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, (2029/05/23 08:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.64  69
Nunki          18:55:15.9 -26:17:49  2.0 11.17 101
4 Sgr          17:59:47.6 -23:48:59  4.8  2.14  89
PPM 267811     18:04:48.5 -25:36:20  7.6  0.24  90
PPM 267846     18:06:02.4 -25:31:20  9.5  0.08  90
471172         18:05:43.0 -25:28:48 15.7        90
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:35:40 UT

Marc W. Buie, Southwest Research Institute

RECON