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 06:58:42 UTC

J2000 position of star is 06:12:56.1 +21:31:07
Equinox of date position of star is 06:14:16.9 +21:30:41
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.
TNO apparent brightness V=18.1

[RECON map]
TNO is 9.3 AU from the Sun and 8.4 AU from the Earth.
The TNO is moving 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 27 seconds.
The 1-sigma cross-track error in the shadow position is 3595 km.
The sky-plane scale is 6072.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.4
Diameter=128.2 km assuming a 5% albedo -- 3.4 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 28.8 km RECON observability=1.0 and success probability=13.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:58:19 -58.0 Dark Down 60.8 183.4 Up 06:55:32 - 07:01:05 3653
Sleaford 06:57:53 -59.6 Dark Down 57.0 208.3 Up 06:55:06 - 07:00:39 3594
Kelowna 06:58:18 -58.9 Dark Down 61.6 185.2 Up 06:55:31 - 07:01:04 3561
Peachland 06:58:18 -58.9 Dark Down 61.7 184.7 Up 06:55:32 - 07:01:05 3555
Summerland 06:58:18 -59.1 Dark Down 61.9 184.9 Up 06:55:32 - 07:01:05 3539
Penticton 06:58:18 -59.2 Dark Down 61.9 185.1 Up 06:55:31 - 07:01:04 3531
Victoria 06:58:26 -58.6 Dark Down 63.0 177.5 Up 06:55:39 - 07:01:12 3504
Oliver 06:58:18 -59.5 Dark Down 62.3 185.2 Up 06:55:31 - 07:01:04 3497
Anarchist Mountain Observatory 06:58:18 -59.7 Dark Down 62.4 185.6 Up 06:55:31 - 07:01:04 3477
Tonasket 06:58:18 -59.9 Dark Down 62.7 185.5 Up 06:55:32 - 07:01:05 3449
Okanogan 06:58:19 -60.2 Dark Down 63.1 185.3 Up 06:55:32 - 07:01:05 3419
Brewster 06:58:19 -60.3 Dark Down 63.4 184.9 Up 06:55:33 - 07:01:06 3396
Manson/Chelan 06:58:20 -60.4 Dark Down 63.6 184.2 Up 06:55:33 - 07:01:06 3382
Wenatchee 06:58:21 -60.7 Dark Down 64.1 183.9 Up 06:55:34 - 07:01:07 3339
Ellensburg 06:58:21 -60.9 Dark Down 64.5 183.5 Up 06:55:35 - 07:01:08 3303
Yakima 06:58:21 -61.3 Dark Down 64.9 183.5 Up 06:55:35 - 07:01:08 3264
Toppenish/White Swan 06:58:21 -61.5 Dark Down 65.1 183.9 Up 06:55:35 - 07:01:08 3239
Goldendale 06:58:23 -61.8 Dark Down 65.7 183.0 Up 06:55:36 - 07:01:09 3193
The Dalles 06:58:23 -61.8 Dark Down 65.9 182.2 Up 06:55:37 - 07:01:10 3178
PNWRO 06:58:19 -62.4 Dark Down 65.4 187.3 Up 06:55:32 - 07:01:05 3175
Maupin 06:58:24 -62.2 Dark Down 66.3 182.5 Up 06:55:37 - 07:01:10 3134
Sisters 06:58:25 -62.6 Dark Down 67.2 181.4 Up 06:55:38 - 07:01:11 3057
Bend 06:58:25 -62.9 Dark Down 67.4 182.1 Up 06:55:38 - 07:01:11 3028
Oregon Observatory 06:58:25 -63.0 Dark Down 67.6 181.8 Up 06:55:38 - 07:01:11 3014
North Lake 06:58:24 -63.7 Dark Down 68.2 183.2 Up 06:55:38 - 07:01:11 2939
Chiloquin 06:58:27 -63.8 Dark Down 68.9 180.8 Up 06:55:40 - 07:01:13 2890
Klamath Falls 06:58:27 -64.0 Dark Down 69.3 181.1 Up 06:55:40 - 07:01:13 2854
Lakeview 06:58:24 -64.8 Dark Down 69.3 184.8 Up 06:55:37 - 07:01:10 2821
Cedarville 06:58:24 -65.4 Dark Down 69.9 185.4 Up 06:55:37 - 07:01:10 2751
Fall River/Burney 06:58:27 -65.1 Dark Down 70.5 182.2 Up 06:55:40 - 07:01:13 2727
Susanville 06:58:26 -65.9 Dark Down 71.1 184.4 Up 06:55:39 - 07:01:12 2648
Greenville 06:58:27 -66.0 Dark Down 71.3 183.6 Up 06:55:40 - 07:01:13 2626
Gimple 06:58:26 -66.0 Dark Down 71.3 183.8 Up 06:55:40 - 07:01:13 2624
Quincy 06:58:27 -66.1 Dark Down 71.6 183.6 Up 06:55:40 - 07:01:13 2605
Portola 06:58:26 -66.5 Dark Down 71.7 185.0 Up 06:55:39 - 07:01:12 2582
Reno 06:58:24 -67.0 Dark Down 71.9 187.0 Up 06:55:38 - 07:01:11 2541
Carson City 06:58:24 -67.3 Dark Down 72.2 187.3 Up 06:55:38 - 07:01:11 2504
Gardnerville 06:58:25 -67.5 Dark Down 72.5 187.5 Up 06:55:38 - 07:01:11 2478
Yerington 06:58:23 -67.7 Dark Down 72.3 189.3 Up 06:55:37 - 07:01:10 2471
Hawthorne 06:58:22 -68.4 Dark Down 72.7 191.1 Up 06:55:36 - 07:01:09 2412
Dunrhomin 06:57:52 -71.4 Dark Down 66.4 222.4 Up 06:55:06 - 07:00:39 2378
Lee Vining 06:58:24 -68.5 Dark Down 73.3 189.9 Up 06:55:37 - 07:01:10 2364
CU-SBO 06:57:53 -71.6 Dark Down 66.6 222.6 Up 06:55:06 - 07:00:39 2353
Tonopah 06:58:19 -69.5 Dark Down 72.9 195.8 Up 06:55:33 - 07:01:06 2336
Bishop 06:58:23 -69.3 Dark Down 73.8 192.7 Up 06:55:36 - 07:01:09 2286
Beatty 06:58:19 -70.6 Dark Down 73.9 198.4 Up 06:55:33 - 07:01:06 2205
Indian Springs 06:58:17 -71.4 Dark Down 73.9 202.2 Up 06:55:30 - 07:01:03 2150
Henderson 06:58:16 -72.1 Dark Down 74.2 205.2 Up 06:55:29 - 07:01:02 2081
Patrick 06:58:13 -73.2 Dark Down 74.3 209.7 Up 06:55:27 - 07:01:00 1994
Laughlin/Bullhead City 06:58:15 -73.0 Dark Down 74.8 207.9 Up 06:55:28 - 07:01:01 1981
Kingman/Dolan Springs 06:58:14 -73.3 Dark Down 74.6 209.5 Up 06:55:27 - 07:01:00 1974
Mohave Valley 06:58:15 -73.2 Dark Down 75.1 208.4 Up 06:55:29 - 07:01:02 1952
Wildwood 06:58:25 -71.3 Dark Down 77.0 195.0 Up 06:55:39 - 07:01:12 1947
Lake Havasu City 06:58:15 -73.7 Dark Down 75.3 209.9 Up 06:55:28 - 07:01:01 1904
Idyllwild 06:58:21 -72.8 Dark Down 76.9 202.9 Up 06:55:34 - 07:01:07 1870
Parker 06:58:15 -73.9 Dark Down 75.6 210.7 Up 06:55:28 - 07:01:01 1866
Calipatria 06:58:18 -73.9 Dark Down 77.0 208.5 Up 06:55:32 - 07:01:05 1781
George/Scottsdale 06:58:09 -75.5 Dark Down 74.8 219.2 Up 06:55:23 - 07:00:56 1777
Yuma 06:58:16 -74.8 Dark Down 77.0 212.7 Up 06:55:30 - 07:01:03 1718

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 2022/06/07 22:33:59 UT

Marc W. Buie, Southwest Research Institute

RECON