RECON: TNO occultation with 11UJ413

Event between 11UJ413 and star GA0980:01349494 with event index number of 2129188

Geocentric closest approach at 2023/01/27 08:50:03 UTC

J2000 position of star is 06:08:00.8 +09:00:14
Equinox of date position of star is 06:09:16.4 +08:59:56
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 71 degrees from the moon. Moon is 37% illuminated.
Apparent brightness V=22.8

[RECON map]
Object is 39.2 AU from the Sun and 38.4 AU from the Earth.
Apparent velocity is 20.1 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 179 seconds.
The 1-sigma cross-track error in the shadow position is 1522 km.
The sky-plane scale is 27869.2 km/arcsec.

The object has an absolute magnitude Hv=6.8
Diameter=261.8 km assuming a 5% albedo -- 13.0 sec chord
Diameter=106.9 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 11UJ413, (2023/01/27 08:50UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.3 +07:24:34  0.4  3.56  67
Alhena         06:39:02.7 +16:22:39  1.9 10.35  77
75 Ori         06:18:23.0 +09:55:55  5.4  2.43  73
PPM 149940     06:09:04.9 +08:56:33  8.4  0.07  70
11UJ413        06:09:16.6 +08:59:56 16.5        71
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 17.4 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:48:21 -51.9 Dark Down 25.0 251.5 Low 08:33:21 - 09:03:21 12770
Kamloops 08:48:42 -57.1 Dark Down 33.7 238.9 Up 08:33:42 - 09:03:42 12406
Kelowna 08:48:35 -57.7 Dark Down 33.6 240.2 Up 08:33:35 - 09:03:35 12377
Peachland 08:48:35 -57.9 Dark Down 33.8 240.0 Up 08:33:35 - 09:03:35 12364
Summerland 08:48:33 -58.0 Dark Down 33.9 240.2 Up 08:33:33 - 09:03:33 12357
Penticton 08:48:33 -58.0 Dark Down 33.8 240.3 Up 08:33:33 - 09:03:33 12355
Oliver 08:48:33 -58.4 Dark Down 34.0 240.5 Up 08:33:33 - 09:03:33 12334
Anarchist Mountain Observatory 08:48:31 -58.5 Dark Down 34.0 240.8 Up 08:33:31 - 09:03:31 12328
Okanogan 08:48:31 -59.2 Dark Down 34.4 241.0 Up 08:33:31 - 09:03:31 12283
Brewster 08:48:29 -59.5 Dark Down 34.7 240.9 Up 08:33:29 - 09:03:29 12261
Manson/Chelan 08:48:28 -59.7 Dark Down 35.0 240.7 Up 08:33:28 - 09:03:28 12240
Victoria 08:48:38 -59.6 Dark Down 36.5 237.1 Up 08:33:38 - 09:03:38 12208
Wenatchee 08:48:29 -60.2 Dark Down 35.3 240.8 Up 08:33:29 - 09:03:29 12206
Ellensburg 08:48:28 -60.7 Dark Down 35.7 240.9 Up 08:33:28 - 09:03:28 12174
Yakima 08:48:24 -61.1 Dark Down 35.9 241.1 Up 08:33:24 - 09:03:24 12148
PNWRO 08:48:18 -61.3 Dark Down 35.1 243.0 Up 08:33:18 - 09:03:18 12148
Toppenish/White Swan 08:48:24 -61.2 Dark Down 35.9 241.4 Up 08:33:24 - 09:03:24 12137
Dunrhomin 08:47:26 -60.3 Dark Down 27.8 257.6 Low 08:32:26 - 09:02:26 12076
The Dalles 08:48:23 -62.1 Dark Down 36.7 241.1 Up 08:33:23 - 09:03:23 12067
Nikitin 08:47:25 -60.4 Dark Down 27.8 257.7 Low 08:32:25 - 09:02:25 12063
CU-SBO 08:47:26 -60.5 Dark Down 27.9 257.7 Low 08:32:26 - 09:02:26 12057
Maupin 08:48:21 -62.5 Dark Down 36.9 241.5 Up 08:33:21 - 09:03:21 12042
Sisters 08:48:19 -63.5 Dark Down 37.6 241.6 Up 08:33:19 - 09:03:19 11970
Bend 08:48:16 -63.6 Dark Down 37.6 242.0 Up 08:33:16 - 09:03:16 11960
Oregon Observatory 08:48:17 -63.8 Dark Down 37.7 242.0 Up 08:33:17 - 09:03:17 11945
Chiloquin 08:48:12 -65.2 Dark Down 38.6 242.5 Up 08:33:12 - 09:03:12 11842
Klamath Falls 08:48:11 -65.5 Dark Down 38.7 242.8 Up 08:33:11 - 09:03:11 11819
Cedarville 08:48:03 -65.8 Dark Down 38.0 244.8 Up 08:33:03 - 09:03:03 11809
Fall River/Burney 08:48:06 -66.6 Dark Down 39.0 244.0 Up 08:33:06 - 09:03:06 11743
Gimple 08:48:00 -67.3 Dark Down 39.1 245.1 Up 08:33:00 - 09:03:00 11689
Greenville 08:48:03 -67.3 Dark Down 39.1 245.1 Up 08:33:03 - 09:03:03 11687
Portola 08:47:58 -67.5 Dark Down 38.9 245.7 Up 08:32:58 - 09:02:58 11675
Quincy 08:48:01 -67.5 Dark Down 39.2 245.2 Up 08:33:01 - 09:03:01 11672
Reno 08:47:57 -67.5 Dark Down 38.6 246.5 Up 08:32:57 - 09:02:57 11672
Yerington 08:47:54 -67.8 Dark Down 38.3 247.5 Up 08:32:54 - 09:02:54 11647
Carson City 08:47:55 -67.9 Dark Down 38.7 246.8 Up 08:32:55 - 09:02:55 11645
Gardnerville 08:47:53 -68.1 Dark Down 38.8 247.0 Up 08:32:53 - 09:02:53 11628
Hawthorne 08:47:51 -68.1 Dark Down 38.1 248.2 Up 08:32:51 - 09:02:51 11625
Lee Vining 08:47:49 -68.8 Dark Down 38.7 248.2 Up 08:32:49 - 09:02:49 11570
Beatty 08:47:38 -68.8 Dark Down 37.3 250.9 Up 08:32:38 - 09:02:38 11549
Bishop 08:47:45 -69.0 Dark Down 38.4 249.3 Up 08:32:45 - 09:02:45 11543
Patrick 08:47:26 -68.6 Dark Down 35.6 254.2 Up 08:32:26 - 09:02:26 11509
Laughlin/Bullhead City 08:47:28 -69.1 Dark Down 36.2 253.8 Up 08:32:28 - 09:02:28 11471
George/Scottsdale 08:47:16 -68.6 Dark Down 34.5 256.7 Up 08:32:16 - 09:02:16 11427
Lake Havasu City 08:47:23 -69.5 Dark Down 36.2 254.5 Up 08:32:23 - 09:02:23 11424
Idyllwild 08:47:28 -71.4 Dark Down 38.3 253.3 Up 08:32:28 - 09:02:28 11300
Calipatria 08:47:23 -71.2 Dark Down 37.6 254.6 Up 08:32:23 - 09:02:23 11282
Wildwood 08:47:32 -72.0 Dark Down 39.7 251.6 Up 08:32:32 - 09:02:32 11278
Yuma 08:47:19 -71.0 Dark Down 36.9 255.5 Up 08:32:19 - 09:02:19 11271

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 11UJ413, (2023/01/27 08:50UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  3.56  67
Alhena         06:37:42.8 +16:23:57  1.9 10.35  77
75 Ori         06:17:06.6 +09:56:31  5.4  2.43  73
PPM 149940     06:07:49.1 +08:56:50  8.4  0.07  70
11UJ413        06:08:00.8 +09:00:14 16.5        71
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:29:50 UT

Marc W. Buie, Southwest Research Institute

RECON