RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA1100:01820902 with event index number of 2655664

Geocentric closest approach at 2026/01/11 06:59:01 UTC

J2000 position of star is 06:12:56.1 +21:31:07
Equinox of date position of star is 06:14:24.2 +21:30:38
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 44% illuminated.
Apparent brightness V=18.0

[RECON map]
Object is 9.3 AU from the Sun and 8.4 AU from the Earth.
Apparent velocity is 37.9 km/sec on the sky relative to the star, or, 22.5 arcsec/hr.
The 1-sigma error in the time of the event is 10 seconds.
The 1-sigma cross-track error in the shadow position is 751 km.
The sky-plane scale is 6072.9 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=128.2 km assuming a 5% albedo -- 3.5 sec chord
Diameter=52.4 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2026/01/11 06:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:34.9 +07:24:35  0.4 14.75 117
Alhena         06:39:12.9 +16:22:29  1.9  7.78 108
7Eta Gem       06:16:27.0 +22:29:48  4.5  1.09 114
PPM 095569     06:12:51.8 +21:33:23  7.2  0.38 115
PPM 095630     06:15:31.8 +21:25:06  9.2  0.26 115
468861         06:14:29.9 +21:30:36 14.0       114
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 33.7 km RECON observability=1.0 and success probability=7.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:58:37 -58.0 Dark Down 60.8 183.6 Up 06:57:19 - 06:59:55 3347
Sleaford 06:58:11 -59.6 Dark Down 57.0 208.4 Up 06:56:53 - 06:59:29 3288
Kelowna 06:58:36 -59.0 Dark Down 61.6 185.4 Up 06:57:18 - 06:59:54 3254
Peachland 06:58:37 -59.0 Dark Down 61.7 184.8 Up 06:57:19 - 06:59:55 3249
Summerland 06:58:37 -59.1 Dark Down 61.8 185.0 Up 06:57:19 - 06:59:55 3233
Penticton 06:58:37 -59.2 Dark Down 61.9 185.3 Up 06:57:19 - 06:59:55 3225
Victoria 06:58:44 -58.6 Dark Down 63.0 177.6 Up 06:57:26 - 07:00:02 3198
Oliver 06:58:37 -59.5 Dark Down 62.3 185.3 Up 06:57:19 - 06:59:55 3191
Anarchist Mountain Observatory 06:58:36 -59.7 Dark Down 62.4 185.8 Up 06:57:18 - 06:59:54 3171
Okanogan 06:58:37 -60.2 Dark Down 63.1 185.4 Up 06:57:19 - 06:59:55 3113
Brewster 06:58:38 -60.4 Dark Down 63.4 185.1 Up 06:57:20 - 06:59:56 3090
Manson/Chelan 06:58:39 -60.4 Dark Down 63.6 184.3 Up 06:57:21 - 06:59:57 3076
Wenatchee 06:58:39 -60.7 Dark Down 64.1 184.1 Up 06:57:21 - 06:59:57 3033
Ellensburg 06:58:40 -61.0 Dark Down 64.5 183.6 Up 06:57:22 - 06:59:58 2997
Yakima 06:58:40 -61.3 Dark Down 64.9 183.7 Up 06:57:22 - 06:59:58 2957
Toppenish/White Swan 06:58:40 -61.5 Dark Down 65.1 184.1 Up 06:57:22 - 06:59:58 2933
The Dalles 06:58:42 -61.8 Dark Down 65.9 182.4 Up 06:57:24 - 07:00:00 2871
PNWRO 06:58:37 -62.4 Dark Down 65.4 187.5 Up 06:57:19 - 06:59:55 2869
Maupin 06:58:42 -62.2 Dark Down 66.3 182.7 Up 06:57:24 - 07:00:00 2828
Sisters 06:58:44 -62.6 Dark Down 67.2 181.6 Up 06:57:26 - 07:00:02 2751
Bend 06:58:43 -62.9 Dark Down 67.4 182.3 Up 06:57:25 - 07:00:01 2722
Oregon Observatory 06:58:44 -63.0 Dark Down 67.6 182.0 Up 06:57:26 - 07:00:02 2707
Chiloquin 06:58:45 -63.8 Dark Down 68.9 181.0 Up 06:57:27 - 07:00:03 2584
Klamath Falls 06:58:45 -64.1 Dark Down 69.3 181.3 Up 06:57:27 - 07:00:03 2548
Cedarville 06:58:43 -65.4 Dark Down 69.9 185.6 Up 06:57:25 - 07:00:01 2445
Fall River/Burney 06:58:45 -65.1 Dark Down 70.5 182.4 Up 06:57:27 - 07:00:03 2421
Greenville 06:58:45 -66.0 Dark Down 71.3 183.8 Up 06:57:27 - 07:00:03 2319
Gimple 06:58:45 -66.1 Dark Down 71.3 184.0 Up 06:57:27 - 07:00:03 2317
Quincy 06:58:45 -66.1 Dark Down 71.5 183.9 Up 06:57:27 - 07:00:03 2298
Portola 06:58:44 -66.5 Dark Down 71.6 185.3 Up 06:57:26 - 07:00:02 2276
Reno 06:58:43 -67.0 Dark Down 71.9 187.3 Up 06:57:25 - 07:00:01 2235
Carson City 06:58:43 -67.3 Dark Down 72.2 187.5 Up 06:57:25 - 07:00:01 2197
Gardnerville 06:58:43 -67.5 Dark Down 72.4 187.7 Up 06:57:25 - 07:00:01 2171
Yerington 06:58:42 -67.8 Dark Down 72.3 189.5 Up 06:57:24 - 07:00:00 2164
Hawthorne 06:58:41 -68.4 Dark Down 72.7 191.4 Up 06:57:23 - 06:59:59 2106
Dunrhomin 06:58:11 -71.4 Dark Down 66.4 222.6 Up 06:56:53 - 06:59:29 2072
Lee Vining 06:58:42 -68.5 Dark Down 73.3 190.2 Up 06:57:24 - 07:00:00 2057
Nikitin 06:58:11 -71.6 Dark Down 66.5 222.8 Up 06:56:53 - 06:59:29 2053
CU-SBO 06:58:11 -71.6 Dark Down 66.6 222.8 Up 06:56:53 - 06:59:29 2047
Bishop 06:58:41 -69.4 Dark Down 73.8 192.9 Up 06:57:23 - 06:59:59 1980
Beatty 06:58:38 -70.6 Dark Down 73.9 198.6 Up 06:57:20 - 06:59:56 1899
Patrick 06:58:32 -73.2 Dark Down 74.3 209.9 Up 06:57:14 - 06:59:50 1687
Laughlin/Bullhead City 06:58:34 -73.1 Dark Down 74.8 208.1 Up 06:57:16 - 06:59:52 1674
Wildwood 06:58:44 -71.4 Dark Down 77.0 195.3 Up 06:57:26 - 07:00:02 1640
Lake Havasu City 06:58:33 -73.7 Dark Down 75.3 210.2 Up 06:57:15 - 06:59:51 1598
Idyllwild 06:58:39 -72.8 Dark Down 76.8 203.2 Up 06:57:21 - 06:59:57 1564
Calipatria 06:58:37 -74.0 Dark Down 77.0 208.8 Up 06:57:19 - 06:59:55 1475
George/Scottsdale 06:58:28 -75.6 Dark Down 74.8 219.4 Up 06:57:10 - 06:59:46 1471
Yuma 06:58:35 -74.8 Dark Down 77.0 213.0 Up 06:57:17 - 06:59:53 1411

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 468861, (2026/01/11 06:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.75 117
Alhena         06:37:42.8 +16:23:57  1.9  7.78 108
7Eta Gem       06:14:52.6 +22:30:24  4.5  1.09 114
PPM 095569     06:11:18.1 +21:33:50  7.2  0.38 115
PPM 095630     06:13:58.1 +21:25:39  9.2  0.26 115
468861         06:12:56.1 +21:31:07 14.0       115
Positions are for J2000

Event circumstances last updated at 2024/06/18 21:23:54 UT

Marc W. Buie, Southwest Research Institute

RECON