RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA0860:00508700 with event index number of 2656293

Geocentric closest approach at 2028/01/15 06:59:32 UTC

J2000 position of star is 05:00:29.1 -03:55:40
Equinox of date position of star is 05:01:42.2 -03:53:35
Stellar brightness G=9.5, use SENSEUP=2 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 84 degrees from the moon. Moon is 86% illuminated.
Apparent brightness V=19.0

[RECON map]
Object is 11.3 AU from the Sun and 10.6 AU from the Earth.
Apparent velocity is 29.8 km/sec on the sky relative to the star, or, 13.9 arcsec/hr.
The 1-sigma error in the time of the event is 19 seconds.
The 1-sigma cross-track error in the shadow position is 1814 km.
The sky-plane scale is 7711.2 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=128.2 km assuming a 5% albedo -- 4.5 sec chord
Diameter=52.4 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2028/01/15 06:59UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:53.2 -08:10:17  0.1  5.52  81
67Bet Eri      05:09:13.8 -05:03:08  2.8  2.17  82
PPM 187623     05:04:09.0 -04:10:19  5.6  0.63  83
PPM 187547     05:00:48.5 -04:09:02  8.0  0.37  84
PPM 187571     05:01:52.9 -03:53:17  9.4  0.00  84
468861         05:01:52.9 -03:53:17  9.5        84
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 24.6 km RECON observability=1.0 and success probability=17.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:58:24 -57.3 Dark Up 31.8 207.8 Up 06:56:19 - 07:00:29 2783
Sleaford 06:57:57 -59.0 Dark Up 25.5 222.6 Low 06:55:52 - 07:00:02 2771
Kelowna 06:58:21 -58.3 Dark Up 32.3 209.0 Up 06:56:16 - 07:00:26 2720
Peachland 06:58:21 -58.3 Dark Up 32.5 208.7 Up 06:56:16 - 07:00:26 2715
Summerland 06:58:21 -58.4 Dark Up 32.6 208.9 Up 06:56:16 - 07:00:26 2704
Penticton 06:58:21 -58.5 Dark Up 32.6 209.0 Up 06:56:16 - 07:00:26 2699
Oliver 06:58:21 -58.8 Dark Up 32.9 209.1 Up 06:56:16 - 07:00:26 2674
Anarchist Mountain Observatory 06:58:20 -59.0 Dark Up 33.0 209.4 Up 06:56:15 - 07:00:25 2661
Victoria 06:58:29 -57.9 Dark Up 34.6 204.9 Up 06:56:24 - 07:00:34 2657
Okanogan 06:58:20 -59.5 Dark Up 33.6 209.3 Up 06:56:15 - 07:00:25 2617
Brewster 06:58:20 -59.7 Dark Up 33.9 209.2 Up 06:56:15 - 07:00:25 2599
Manson/Chelan 06:58:21 -59.7 Dark Up 34.2 208.9 Up 06:56:16 - 07:00:26 2587
Wenatchee 06:58:21 -60.0 Dark Up 34.7 208.8 Up 06:56:16 - 07:00:26 2554
Ellensburg 06:58:21 -60.3 Dark Up 35.1 208.7 Up 06:56:16 - 07:00:26 2526
Yakima 06:58:21 -60.6 Dark Up 35.5 208.8 Up 06:56:16 - 07:00:26 2496
Toppenish/White Swan 06:58:20 -60.8 Dark Up 35.6 209.1 Up 06:56:15 - 07:00:25 2479
PNWRO 06:58:16 -61.7 Dark Up 35.4 210.9 Up 06:56:11 - 07:00:21 2439
The Dalles 06:58:21 -61.1 Dark Up 36.6 208.4 Up 06:56:16 - 07:00:26 2427
Maupin 06:58:21 -61.5 Dark Up 36.9 208.7 Up 06:56:16 - 07:00:26 2395
Sisters 06:58:21 -61.9 Dark Up 37.8 208.5 Up 06:56:16 - 07:00:26 2332
Bend 06:58:20 -62.2 Dark Up 38.0 208.9 Up 06:56:15 - 07:00:25 2312
Oregon Observatory 06:58:20 -62.3 Dark Up 38.2 208.8 Up 06:56:15 - 07:00:25 2300
Chiloquin 06:58:21 -63.1 Dark Up 39.5 208.8 Up 06:56:16 - 07:00:26 2200
Klamath Falls 06:58:20 -63.4 Dark Up 39.7 209.0 Up 06:56:15 - 07:00:25 2173
Cedarville 06:58:16 -64.7 Dark Up 39.7 211.2 Up 06:56:11 - 07:00:21 2103
Fall River/Burney 06:58:18 -64.4 Dark Up 40.6 210.0 Up 06:56:13 - 07:00:23 2075
Greenville 06:58:17 -65.3 Dark Up 41.2 210.9 Up 06:56:12 - 07:00:22 1997
Gimple 06:58:16 -65.3 Dark Up 41.2 211.0 Up 06:56:11 - 07:00:21 1996
Quincy 06:58:17 -65.4 Dark Up 41.4 211.0 Up 06:56:12 - 07:00:22 1980
Portola 06:58:15 -65.8 Dark Up 41.3 211.6 Up 06:56:10 - 07:00:20 1966
Reno 06:58:13 -66.3 Dark Up 41.3 212.5 Up 06:56:08 - 07:00:18 1938
Carson City 06:58:13 -66.6 Dark Up 41.6 212.7 Up 06:56:08 - 07:00:18 1908
Gardnerville 06:58:13 -66.8 Dark Up 41.8 212.9 Up 06:56:08 - 07:00:18 1887
Yerington 06:58:11 -67.0 Dark Up 41.5 213.6 Up 06:56:06 - 07:00:16 1886
Dunrhomin 06:57:39 -70.8 Dark Up 33.5 228.0 Up 06:55:34 - 06:59:44 1864
Nikitin 06:57:38 -70.9 Dark Up 33.7 228.1 Up 06:55:33 - 06:59:43 1849
CU-SBO 06:57:38 -71.0 Dark Up 33.8 228.0 Up 06:55:33 - 06:59:43 1844
Hawthorne 06:58:09 -67.7 Dark Up 41.6 214.4 Up 06:56:04 - 07:00:14 1842
Lee Vining 06:58:10 -67.8 Dark Up 42.3 214.1 Up 06:56:05 - 07:00:15 1799
Bishop 06:58:08 -68.6 Dark Up 42.5 215.3 Up 06:56:03 - 07:00:13 1740
Beatty 06:58:03 -69.9 Dark Up 42.1 217.5 Up 06:55:58 - 07:00:08 1685
Patrick 06:57:55 -72.5 Dark Up 41.8 221.6 Up 06:55:50 - 07:00:00 1527
Laughlin/Bullhead City 06:57:56 -72.3 Dark Up 42.3 221.0 Up 06:55:51 - 07:00:01 1511
Wildwood 06:58:06 -70.6 Dark Up 45.2 216.9 Up 06:56:01 - 07:00:11 1455
Lake Havasu City 06:57:55 -72.9 Dark Up 42.7 221.6 Up 06:55:50 - 07:00:00 1449
Idyllwild 06:58:01 -72.1 Dark Up 44.6 219.4 Up 06:55:56 - 07:00:06 1405
George/Scottsdale 06:57:48 -74.8 Dark Up 41.9 224.8 Up 06:55:43 - 06:59:53 1355
Calipatria 06:57:57 -73.2 Dark Up 44.4 221.1 Up 06:55:52 - 07:00:02 1337
Yuma 06:57:55 -74.1 Dark Up 44.2 222.4 Up 06:55:50 - 07:00:00 1288

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, (2028/01/15 06:59UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  5.52  81
67Bet Eri      05:07:50.8 -05:05:13  2.8  2.17  82
PPM 187623     05:02:45.5 -04:12:36  5.6  0.63  83
PPM 187547     04:59:24.9 -04:11:27  8.0  0.37  84
PPM 187571     05:00:29.1 -03:55:40  9.4  0.00  84
468861         05:00:29.1 -03:55:40  9.5        84
Positions are for J2000

Event circumstances last updated at 2024/06/23 21:27:53 UT

Marc W. Buie, Southwest Research Institute

RECON