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 11:17:29 UTC

J2000 position of star is 07:23:22.9 +37:33:12
Equinox of date position of star is 07:25:00.5 +37:30:18
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 8 seconds.
The 1-sigma cross-track error in the shadow position is 464 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 -- 1.4 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 24.5 km RECON observability=1.0 and success probability=19.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:16:07 -34.8 Dark Down 52.1 268.0 Up 11:14:55 - 11:17:19 2668
Kamloops 11:16:25 -43.9 Dark Down 61.2 257.0 Up 11:15:13 - 11:17:37 2192
Kelowna 11:16:23 -43.6 Dark Down 60.8 259.4 Up 11:15:11 - 11:17:35 2125
Peachland 11:16:23 -43.8 Dark Down 61.0 259.3 Up 11:15:11 - 11:17:35 2108
Summerland 11:16:23 -43.8 Dark Down 61.0 259.6 Up 11:15:11 - 11:17:35 2094
Penticton 11:16:22 -43.7 Dark Down 60.9 259.9 Up 11:15:10 - 11:17:34 2090
Oliver 11:16:22 -43.8 Dark Down 61.0 260.5 Up 11:15:10 - 11:17:34 2053
Anarchist Mountain Observatory 11:16:22 -43.7 Dark Down 60.9 261.0 Up 11:15:10 - 11:17:34 2039
Okanogan 11:16:21 -44.1 Dark Down 61.1 261.9 Up 11:15:09 - 11:17:33 1968
Brewster 11:16:21 -44.3 Dark Down 61.3 262.2 Up 11:15:09 - 11:17:33 1936
Victoria 11:16:27 -46.4 Dark Down 63.6 257.9 Up 11:15:15 - 11:17:39 1911
Manson/Chelan 11:16:22 -44.5 Dark Down 61.6 262.3 Up 11:15:10 - 11:17:34 1906
Wenatchee 11:16:21 -44.8 Dark Down 61.8 263.0 Up 11:15:09 - 11:17:33 1853
Ellensburg 11:16:21 -45.0 Dark Down 62.0 263.6 Up 11:15:09 - 11:17:33 1805
Yakima 11:16:21 -45.1 Dark Down 62.0 264.3 Up 11:15:09 - 11:17:33 1762
Toppenish/White Swan 11:16:21 -45.1 Dark Down 61.9 264.8 Up 11:15:09 - 11:17:33 1743
PNWRO 11:16:18 -44.2 Dark Down 60.9 266.7 Up 11:15:06 - 11:17:30 1737
The Dalles 11:16:21 -45.8 Dark Down 62.5 265.7 Up 11:15:09 - 11:17:33 1645
Maupin 11:16:21 -45.8 Dark Down 62.5 266.6 Up 11:15:09 - 11:17:33 1603
Dunrhomin 11:15:51 -34.8 Dark Down 50.5 283.2 Up 11:14:39 - 11:17:03 1532
Nikitin 11:15:50 -34.8 Dark Down 50.5 283.4 Up 11:14:38 - 11:17:02 1513
CU-SBO 11:15:50 -34.8 Dark Down 50.5 283.5 Up 11:14:38 - 11:17:02 1504
Sisters 11:16:21 -46.4 Dark Down 62.9 267.9 Up 11:15:09 - 11:17:33 1500
Bend 11:16:20 -46.3 Dark Down 62.7 268.5 Up 11:15:08 - 11:17:32 1480
Oregon Observatory 11:16:20 -46.4 Dark Down 62.8 268.8 Up 11:15:08 - 11:17:32 1459
Chiloquin 11:16:20 -47.0 Dark Down 63.1 271.1 Up 11:15:08 - 11:17:32 1310
Klamath Falls 11:16:19 -47.0 Dark Down 63.0 271.8 Up 11:15:07 - 11:17:31 1275
Cedarville 11:16:16 -45.9 Dark Down 61.8 274.1 Up 11:15:04 - 11:17:28 1236
Fall River/Burney 11:16:18 -46.9 Dark Down 62.7 274.3 Up 11:15:06 - 11:17:30 1158
Gimple 11:16:16 -46.7 Dark Down 62.2 276.3 Up 11:15:04 - 11:17:28 1072
Greenville 11:16:16 -46.7 Dark Down 62.3 276.3 Up 11:15:04 - 11:17:28 1071
Quincy 11:16:16 -46.7 Dark Down 62.3 276.7 Up 11:15:04 - 11:17:28 1049
Portola 11:16:15 -46.4 Dark Down 61.9 277.1 Up 11:15:03 - 11:17:27 1047
Reno 11:16:14 -45.9 Dark Down 61.4 277.9 Up 11:15:02 - 11:17:26 1033
Carson City 11:16:14 -46.0 Dark Down 61.3 278.6 Up 11:15:02 - 11:17:26 996
Yerington 11:16:12 -45.5 Dark Down 60.8 279.2 Up 11:15:00 - 11:17:24 990
Gardnerville 11:16:13 -46.0 Dark Down 61.2 279.0 Up 11:15:01 - 11:17:25 971
Hawthorne 11:16:11 -45.1 Dark Down 60.3 280.2 Up 11:14:59 - 11:17:23 954
Lee Vining 11:16:11 -45.6 Dark Down 60.6 281.0 Up 11:14:59 - 11:17:23 881
Bishop 11:16:10 -45.0 Dark Down 59.9 282.2 Up 11:14:58 - 11:17:22 836
Beatty 11:16:06 -43.8 Dark Down 58.5 283.5 Up 11:14:54 - 11:17:18 830
Patrick 11:16:00 -41.5 Dark Down 55.9 286.5 Up 11:14:48 - 11:17:12 755
Laughlin/Bullhead City 11:16:01 -42.0 Dark Down 56.4 286.7 Up 11:14:49 - 11:17:13 709
Lake Havasu City 11:16:00 -41.8 Dark Down 56.0 287.7 Up 11:14:48 - 11:17:12 645
George/Scottsdale 11:15:55 -39.8 Dark Down 53.8 289.2 Up 11:14:43 - 11:17:07 640
Idyllwild 11:16:04 -43.8 Dark Down 57.6 288.4 Up 11:14:52 - 11:17:16 496
Wildwood 11:16:08 -45.3 Dark Down 59.2 287.6 Up 11:14:56 - 11:17:20 483
Calipatria 11:16:01 -42.8 Dark Down 56.5 289.4 Up 11:14:49 - 11:17:13 466
Yuma 11:15:59 -42.0 Dark Down 55.6 290.1 Up 11:14:47 - 11:17:11 447

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 2024/03/19 03:36:54 UT

Marc W. Buie, Southwest Research Institute

RECON