RECON: TNO occultation with 471155

Event between (471155) 10GF65 and star GA0520:22166571 with event index number of 2234742

Geocentric closest approach at 2024/06/26 07:50:06 UTC

J2000 position of star is 17:51:12.5 -36:25:17
Equinox of date position of star is 17:52:51.7 -36:25:34
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 63 degrees from the moon. Moon is 78% illuminated.
Apparent brightness V=20.8

[RECON map]
Object is 22.3 AU from the Sun and 21.3 AU from the Earth.
Apparent velocity is 21.9 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 550 seconds.
The 1-sigma cross-track error in the shadow position is 1050 km.
The sky-plane scale is 15470.2 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=229.1 km assuming a 5% albedo -- 9.6 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471155, (2024/06/26 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.8 -26:29:03  0.9 20.04  81
Kap Sco        17:44:11.0 -39:02:24  2.4  3.13  65
PPM 296857     17:51:31.6 -37:02:55  3.2  0.68  63
PPM 296904     17:53:21.4 -36:28:20  7.4  0.11  63
471155         17:52:51.9 -36:25:34 16.5        62
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 1.6 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)
Kamloops 07:50:06 -15.9 AT Up 2.8 183.5 Really Low 07:35:06 - 08:05:06 9942
Kelowna 07:50:03 -16.8 AT Up 3.6 184.2 Really Low 07:35:03 - 08:05:03 9937
Peachland 07:50:04 -16.9 AT Up 3.7 183.9 Really Low 07:35:04 - 08:05:04 9936
Summerland 07:50:04 -17.0 AT Up 3.9 184.0 Really Low 07:35:04 - 08:05:04 9935
Penticton 07:50:03 -17.1 AT Up 3.9 184.1 Really Low 07:35:03 - 08:05:03 9934
Oliver 07:50:03 -17.4 AT Up 4.3 184.1 Really Low 07:35:03 - 08:05:03 9931
Anarchist Mountain Observatory 07:50:02 -17.6 AT Up 4.4 184.3 Really Low 07:35:02 - 08:05:02 9931
Okanogan 07:50:03 -18.3 Dark Up 5.1 184.1 Really Low 07:35:03 - 08:05:03 9924
Brewster 07:50:03 -18.5 Dark Up 5.4 183.9 Really Low 07:35:03 - 08:05:03 9921
Victoria 07:50:15 -17.9 AT Up 5.1 181.0 Really Low 07:35:15 - 08:05:15 9921
Manson/Chelan 07:50:05 -18.7 Dark Up 5.6 183.6 Really Low 07:35:05 - 08:05:05 9919
Wenatchee 07:50:04 -19.2 Dark Up 6.1 183.5 Really Low 07:35:04 - 08:05:04 9914
Ellensburg 07:50:06 -19.6 Dark Up 6.5 183.3 Really Low 07:35:06 - 08:05:06 9909
Yakima 07:50:05 -20.0 Dark Up 6.9 183.3 Really Low 07:35:05 - 08:05:05 9903
Toppenish/White Swan 07:50:05 -20.2 Dark Up 7.1 183.5 Really Low 07:35:05 - 08:05:05 9900
PNWRO 07:49:59 -20.6 Dark Up 7.4 184.7 Really Low 07:34:59 - 08:04:59 9895
The Dalles 07:50:07 -21.0 Dark Up 7.9 182.8 Really Low 07:35:07 - 08:05:07 9888
Maupin 07:50:07 -21.4 Dark Up 8.3 182.9 Really Low 07:35:07 - 08:05:07 9882
Sleaford 07:49:23 -14.0 AT Up 0.0 194.8 Really Low 07:34:23 - 08:04:23 9879
Sisters 07:50:08 -22.2 Dark Up 9.2 182.5 Really Low 07:35:08 - 08:05:08 9867
Bend 07:50:07 -22.5 Dark Up 9.5 182.7 Really Low 07:35:07 - 08:05:07 9863
Oregon Observatory 07:50:08 -22.6 Dark Up 9.6 182.6 Really Low 07:35:08 - 08:05:08 9860
Chiloquin 07:50:09 -23.9 Dark Up 11.0 182.3 Really Low 07:35:09 - 08:05:09 9834
Klamath Falls 07:50:09 -24.3 Dark Up 11.3 182.4 Really Low 07:35:09 - 08:05:09 9826
Cedarville 07:50:03 -25.1 Dark Up 11.9 183.7 Really Low 07:35:03 - 08:05:03 9812
Fall River/Burney 07:50:07 -25.5 Dark Up 12.5 182.7 Really Low 07:35:07 - 08:05:07 9800
Greenville 07:50:05 -26.4 Dark Up 13.4 183.1 Really Low 07:35:05 - 08:05:05 9778
Gimple 07:50:05 -26.4 Dark Up 13.4 183.1 Really Low 07:35:05 - 08:05:05 9778
Quincy 07:50:05 -26.6 Dark Up 13.6 183.1 Really Low 07:35:05 - 08:05:05 9772
Portola 07:50:04 -26.8 Dark Up 13.7 183.5 Really Low 07:35:04 - 08:05:04 9770
Reno 07:50:01 -27.1 Dark Up 13.9 184.0 Really Low 07:35:01 - 08:05:01 9763
Carson City 07:50:00 -27.4 Dark Up 14.3 184.0 Really Low 07:35:00 - 08:05:00 9753
Yerington 07:49:58 -27.6 Dark Up 14.4 184.5 Really Low 07:34:58 - 08:04:58 9747
Gardnerville 07:50:00 -27.7 Dark Up 14.5 184.1 Really Low 07:35:00 - 08:05:00 9746
Hawthorne 07:49:56 -28.1 Dark Up 14.8 185.0 Really Low 07:34:56 - 08:04:56 9734
Lee Vining 07:49:58 -28.7 Dark Up 15.4 184.6 Really Low 07:34:58 - 08:04:58 9718
Bishop 07:49:54 -29.3 Dark Up 16.0 185.2 Really Low 07:34:54 - 08:04:54 9699
Dunrhomin 07:49:07 -25.5 Dark Up 11.3 195.7 Really Low 07:34:07 - 08:04:07 9688
Nikitin 07:49:07 -25.7 Dark Up 11.5 195.7 Really Low 07:34:07 - 08:04:07 9683
CU-SBO 07:49:07 -25.8 Dark Up 11.6 195.6 Really Low 07:34:07 - 08:04:07 9682
Beatty 07:49:48 -29.8 Dark Up 16.3 186.6 Really Low 07:34:48 - 08:04:48 9680
Patrick 07:49:36 -31.2 Dark Up 17.5 189.0 Really Low 07:34:36 - 08:04:36 9619
Laughlin/Bullhead City 07:49:38 -31.5 Dark Up 17.8 188.4 Really Low 07:34:38 - 08:04:38 9613
Lake Havasu City 07:49:37 -32.1 Dark Up 18.4 188.7 Really Low 07:34:37 - 08:04:37 9588
Wildwood 07:49:54 -32.5 Dark Up 19.3 185.1 Really Low 07:34:54 - 08:04:54 9588
Idyllwild 07:49:47 -32.9 Dark Up 19.5 186.7 Really Low 07:34:47 - 08:04:47 9571
George/Scottsdale 07:49:27 -32.8 Dark Up 18.9 190.7 Really Low 07:34:27 - 08:04:27 9544
Calipatria 07:49:41 -33.5 Dark Up 19.9 187.7 Really Low 07:34:41 - 08:04:41 9542
Yuma 07:49:38 -33.9 Dark Up 20.3 188.5 Low 07:34:38 - 08:04:38 9521

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, (2024/06/26 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.04  81
Kap Sco        17:42:29.3 -39:01:49  2.4  3.13  65
PPM 296857     17:49:51.6 -37:02:35  3.2  0.68  63
PPM 296904     17:51:42.0 -36:28:04  7.4  0.11  63
471155         17:51:12.5 -36:25:17 16.5        63
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:46:49 UT

Marc W. Buie, Southwest Research Institute

RECON