RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA1380:04255768 with event index number of 2655158

Geocentric closest approach at 2023/11/26 07:40:48 UTC

J2000 position of star is 09:24:15.7 +48:54:52
Equinox of date position of star is 09:25:52.0 +48:48:39
Stellar brightness G=14.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 78 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=18.1

[RECON map]
Object is 8.8 AU from the Sun and 8.4 AU from the Earth.
Apparent velocity is 23.9 km/sec on the sky relative to the star, or, 14.1 arcsec/hr.
The 1-sigma error in the time of the event is 14 seconds.
The 1-sigma cross-track error in the shadow position is 366 km.
The sky-plane scale is 6092.4 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=128.2 km assuming a 5% albedo -- 5.4 sec chord
Diameter=52.4 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2023/11/26 07:40UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:46.6 +27:57:59  1.1 28.23  63
Merak          11:03:16.1 +56:15:13  2.4 16.46  88
PPM 051151     09:19:06.7 +46:42:58  5.7  2.38  77
PPM 051195     09:23:59.0 +48:18:24  7.4  0.59  77
PPM 051231     09:27:34.0 +48:52:21  9.6  0.29  78
PPM 051208     09:24:58.5 +48:35:58 10.2  0.26  77
468861         09:25:52.0 +48:48:38 14.7        78
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=99.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:44:12 -60.2 Dark Up 40.7 58.8 Up 07:42:31 - 07:45:52 1204
Victoria 07:44:20 -62.2 Dark Up 37.9 55.9 Up 07:42:39 - 07:46:00 1128
Peachland 07:44:12 -61.2 Dark Up 40.6 58.4 Up 07:42:32 - 07:45:53 1094
Kelowna 07:44:11 -61.0 Dark Up 40.8 58.6 Up 07:42:31 - 07:45:52 1093
Summerland 07:44:12 -61.3 Dark Up 40.6 58.3 Up 07:42:32 - 07:45:53 1077
Penticton 07:44:12 -61.4 Dark Up 40.6 58.3 Up 07:42:32 - 07:45:53 1066
Oliver 07:44:13 -61.7 Dark Up 40.4 58.1 Up 07:42:32 - 07:45:53 1033
Anarchist Mountain Observatory 07:44:13 -61.9 Dark Up 40.4 58.0 Up 07:42:32 - 07:45:53 1009
Okanogan 07:44:14 -62.5 Dark Up 39.9 57.5 Up 07:42:34 - 07:45:55 957
Brewster 07:44:15 -62.8 Dark Up 39.7 57.2 Up 07:42:34 - 07:45:55 940
Manson/Chelan 07:44:16 -63.0 Dark Up 39.4 56.9 Up 07:42:35 - 07:45:56 935
Wenatchee 07:44:17 -63.5 Dark Up 39.0 56.5 Up 07:42:36 - 07:45:57 897
Sleaford 07:43:43 -57.2 Dark Up 49.3 67.2 Up 07:42:03 - 07:45:24 884
Ellensburg 07:44:18 -63.9 Dark Up 38.7 56.1 Up 07:42:37 - 07:45:58 868
Yakima 07:44:18 -64.3 Dark Up 38.4 55.9 Up 07:42:38 - 07:45:59 830
Toppenish/White Swan 07:44:18 -64.5 Dark Up 38.4 55.8 Up 07:42:38 - 07:45:59 803
The Dalles 07:44:21 -65.3 Dark Up 37.5 55.0 Up 07:42:40 - 07:46:01 764
Maupin 07:44:21 -65.7 Dark Up 37.3 54.7 Up 07:42:41 - 07:46:02 721
PNWRO 07:44:16 -64.9 Dark Up 39.1 56.1 Up 07:42:36 - 07:45:57 707
Sisters 07:44:23 -66.5 Dark Up 36.5 54.0 Up 07:42:43 - 07:46:04 661
Bend 07:44:23 -66.8 Dark Up 36.6 54.0 Up 07:42:43 - 07:46:04 627
Oregon Observatory 07:44:24 -67.0 Dark Up 36.4 53.8 Up 07:42:43 - 07:46:04 617
Chiloquin 07:44:26 -68.2 Dark Up 35.4 52.9 Up 07:42:46 - 07:46:07 514
Klamath Falls 07:44:26 -68.6 Dark Up 35.2 52.7 Up 07:42:46 - 07:46:07 479
Fall River/Burney 07:44:27 -69.8 Dark Up 34.7 52.2 Up 07:42:47 - 07:46:08 353
Cedarville 07:44:24 -69.4 Dark Up 35.7 52.9 Up 07:42:44 - 07:46:05 342
Greenville 07:44:27 -70.7 Dark Up 34.4 51.9 Up 07:42:47 - 07:46:08 249
Gimple 07:44:27 -70.7 Dark Up 34.5 51.9 Up 07:42:46 - 07:46:07 245
Quincy 07:44:27 -70.9 Dark Up 34.3 51.8 Up 07:42:47 - 07:46:08 230
Portola 07:44:27 -71.1 Dark Up 34.5 51.8 Up 07:42:46 - 07:46:07 196
Reno 07:44:26 -71.4 Dark Up 34.7 51.9 Up 07:42:45 - 07:46:06 141
Carson City 07:44:26 -71.7 Dark Up 34.5 51.7 Up 07:42:45 - 07:46:06 107
Gardnerville 07:44:26 -72.0 Dark Up 34.4 51.6 Up 07:42:46 - 07:46:07 82
Yerington 07:44:25 -71.9 Dark Up 34.8 51.8 Up 07:42:44 - 07:46:05 60
Hawthorne 07:44:24 -72.4 Dark Up 34.8 51.7 Up 07:42:44 - 07:46:05 -7
Lee Vining 07:44:26 -72.9 Dark Up 34.2 51.3 Up 07:42:45 - 07:46:06 -37
Bishop 07:44:25 -73.5 Dark Up 34.2 51.1 Up 07:42:44 - 07:46:05 -126
Beatty 07:44:22 -73.9 Dark Up 35.0 51.3 Up 07:42:41 - 07:46:02 -243
Dunrhomin 07:43:52 -67.3 Dark Up 44.2 56.3 Up 07:42:12 - 07:45:33 -351
Nikitin 07:43:52 -67.4 Dark Up 44.1 56.2 Up 07:42:12 - 07:45:33 -369
CU-SBO 07:43:52 -67.5 Dark Up 44.0 56.1 Up 07:42:12 - 07:45:33 -373
Wildwood 07:44:27 -76.8 Dark Up 32.0 49.4 Up 07:42:47 - 07:46:08 -418
Laughlin/Bullhead City 07:44:18 -75.1 Dark Up 35.2 50.9 Up 07:42:37 - 07:45:58 -501
Patrick 07:44:16 -74.7 Dark Up 35.8 51.1 Up 07:42:35 - 07:45:56 -509
Idyllwild 07:44:23 -77.0 Dark Up 33.0 49.7 Up 07:42:43 - 07:46:04 -540
Lake Havasu City 07:44:17 -75.7 Dark Up 35.0 50.6 Up 07:42:37 - 07:45:58 -576
Calipatria 07:44:21 -77.3 Dark Up 33.3 49.6 Up 07:42:41 - 07:46:02 -650
Yuma 07:44:19 -77.5 Dark Up 33.6 49.6 Up 07:42:38 - 07:45:59 -730
George/Scottsdale 07:44:12 -75.6 Dark Up 36.0 50.6 Up 07:42:31 - 07:45:52 -753

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, (2023/11/26 07:40UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 28.23  63
Merak          11:01:50.7 +56:22:57  2.4 16.46  88
PPM 051151     09:17:31.2 +46:49:03  5.7  2.38  77
PPM 051195     09:22:22.8 +48:24:35  7.4  0.59  77
PPM 051231     09:25:57.8 +48:58:37  9.6  0.29  78
PPM 051208     09:23:22.2 +48:42:10 10.2  0.26  77
468861         09:24:15.7 +48:54:52 14.7        77
Positions are for J2000

Event circumstances last updated at 2023/11/18 04:45:43 UT

Marc W. Buie, Southwest Research Institute

RECON