RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA1260:03129796 with event index number of 2655296

Geocentric closest approach at 2024/12/29 11:17:33 UTC

J2000 position of star is 07:23:22.9 +37:33:12
Equinox of date position of star is 07:24:57.5 +37:30:23
Stellar brightness G=12.5, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 152 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=17.7

[RECON map]
Object is 8.8 AU from the Sun and 7.9 AU from the Earth.
Apparent velocity is 39.6 km/sec on the sky relative to the star, or, 25.0 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 734 km.
The sky-plane scale is 5707.6 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=128.2 km assuming a 5% albedo -- 3.3 sec chord
Diameter=52.4 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2024/12/29 11:17UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.7 +27:57:50  1.1 10.58 148
65 Aur         07:23:42.6 +36:42:40  5.1  0.84 153
PPM 072702     07:23:11.9 +37:36:48  7.7  0.39 152
PPM 072749     07:25:27.0 +37:21:38 11.9  0.16 152
468861         07:25:03.7 +37:30:12 12.5       152
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=29.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:16:10 -34.8 Dark Down 52.1 268.0 Up 11:14:53 - 11:17:28 2736
Kamloops 11:16:28 -43.9 Dark Down 61.2 257.1 Up 11:15:11 - 11:17:46 2259
Kelowna 11:16:26 -43.6 Dark Down 60.8 259.4 Up 11:15:08 - 11:17:43 2193
Peachland 11:16:26 -43.8 Dark Down 61.0 259.3 Up 11:15:09 - 11:17:44 2176
Summerland 11:16:26 -43.8 Dark Down 61.0 259.6 Up 11:15:08 - 11:17:43 2162
Penticton 11:16:26 -43.7 Dark Down 60.9 259.9 Up 11:15:08 - 11:17:43 2158
Oliver 11:16:25 -43.8 Dark Down 61.0 260.5 Up 11:15:08 - 11:17:43 2121
Anarchist Mountain Observatory 11:16:25 -43.7 Dark Down 60.9 261.0 Up 11:15:07 - 11:17:42 2107
Okanogan 11:16:25 -44.0 Dark Down 61.1 261.9 Up 11:15:07 - 11:17:42 2036
Brewster 11:16:25 -44.2 Dark Down 61.3 262.2 Up 11:15:07 - 11:17:42 2003
Victoria 11:16:31 -46.4 Dark Down 63.6 257.9 Up 11:15:13 - 11:17:48 1979
Manson/Chelan 11:16:25 -44.5 Dark Down 61.6 262.3 Up 11:15:08 - 11:17:43 1974
Wenatchee 11:16:25 -44.8 Dark Down 61.8 263.0 Up 11:15:07 - 11:17:42 1921
Ellensburg 11:16:25 -45.0 Dark Down 61.9 263.6 Up 11:15:07 - 11:17:42 1873
Yakima 11:16:25 -45.1 Dark Down 62.0 264.3 Up 11:15:07 - 11:17:42 1830
Toppenish/White Swan 11:16:24 -45.1 Dark Down 61.9 264.9 Up 11:15:07 - 11:17:42 1811
PNWRO 11:16:21 -44.2 Dark Down 60.9 266.8 Up 11:15:04 - 11:17:39 1805
The Dalles 11:16:25 -45.8 Dark Down 62.5 265.7 Up 11:15:07 - 11:17:42 1713
Maupin 11:16:24 -45.8 Dark Down 62.5 266.6 Up 11:15:07 - 11:17:42 1671
Dunrhomin 11:15:54 -34.8 Dark Down 50.5 283.2 Up 11:14:37 - 11:17:12 1600
Nikitin 11:15:54 -34.8 Dark Down 50.5 283.4 Up 11:14:36 - 11:17:11 1581
CU-SBO 11:15:54 -34.8 Dark Down 50.5 283.5 Up 11:14:36 - 11:17:11 1572
Sisters 11:16:24 -46.4 Dark Down 62.9 267.9 Up 11:15:07 - 11:17:42 1568
Bend 11:16:24 -46.3 Dark Down 62.7 268.5 Up 11:15:06 - 11:17:41 1548
Oregon Observatory 11:16:24 -46.4 Dark Down 62.8 268.8 Up 11:15:06 - 11:17:41 1527
Chiloquin 11:16:23 -47.0 Dark Down 63.1 271.1 Up 11:15:06 - 11:17:41 1378
Klamath Falls 11:16:23 -47.0 Dark Down 63.0 271.8 Up 11:15:05 - 11:17:40 1343
Cedarville 11:16:19 -45.9 Dark Down 61.8 274.1 Up 11:15:02 - 11:17:37 1304
Fall River/Burney 11:16:21 -46.9 Dark Down 62.7 274.3 Up 11:15:04 - 11:17:39 1225
Gimple 11:16:20 -46.6 Dark Down 62.2 276.3 Up 11:15:02 - 11:17:37 1140
Greenville 11:16:20 -46.7 Dark Down 62.3 276.3 Up 11:15:02 - 11:17:37 1139
Quincy 11:16:20 -46.7 Dark Down 62.2 276.7 Up 11:15:02 - 11:17:37 1117
Portola 11:16:19 -46.4 Dark Down 61.9 277.1 Up 11:15:01 - 11:17:36 1114
Reno 11:16:17 -45.9 Dark Down 61.3 277.9 Up 11:15:00 - 11:17:35 1101
Carson City 11:16:17 -46.0 Dark Down 61.3 278.6 Up 11:14:59 - 11:17:34 1064
Yerington 11:16:16 -45.5 Dark Down 60.8 279.2 Up 11:14:58 - 11:17:33 1058
Gardnerville 11:16:17 -45.9 Dark Down 61.2 279.0 Up 11:14:59 - 11:17:34 1039
Hawthorne 11:16:14 -45.1 Dark Down 60.3 280.2 Up 11:14:57 - 11:17:32 1022
Lee Vining 11:16:15 -45.6 Dark Down 60.6 281.0 Up 11:14:57 - 11:17:32 949
Bishop 11:16:13 -45.0 Dark Down 59.9 282.2 Up 11:14:56 - 11:17:31 904
Beatty 11:16:10 -43.8 Dark Down 58.5 283.5 Up 11:14:52 - 11:17:27 898
Patrick 11:16:03 -41.5 Dark Down 55.9 286.5 Up 11:14:46 - 11:17:21 823
Laughlin/Bullhead City 11:16:04 -42.0 Dark Down 56.4 286.7 Up 11:14:47 - 11:17:22 777
Lake Havasu City 11:16:03 -41.8 Dark Down 56.0 287.7 Up 11:14:46 - 11:17:21 713
George/Scottsdale 11:15:58 -39.8 Dark Down 53.8 289.2 Up 11:14:41 - 11:17:16 708
Idyllwild 11:16:07 -43.8 Dark Down 57.6 288.4 Up 11:14:50 - 11:17:25 564
Wildwood 11:16:11 -45.3 Dark Down 59.2 287.6 Up 11:14:54 - 11:17:29 551
Calipatria 11:16:05 -42.8 Dark Down 56.5 289.4 Up 11:14:47 - 11:17:22 534
Yuma 11:16:03 -42.0 Dark Down 55.6 290.1 Up 11:14:45 - 11:17:20 515

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, (2024/12/29 11:17UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 10.58 148
65 Aur         07:22:02.4 +36:45:38  5.1  0.84 153
PPM 072702     07:21:30.9 +37:39:44  7.7  0.39 152
PPM 072749     07:23:46.3 +37:24:39 11.9  0.16 152
468861         07:23:22.9 +37:33:12 12.5       152
Positions are for J2000

Event circumstances last updated at 2023/06/19 03:46:43 UT

Marc W. Buie, Southwest Research Institute

RECON