RECON: TNO occultation with 145451

Event between (145451) 05RM43 and star GA1140:01547390 with event index number of 2468977

Geocentric closest approach at 2026/11/30 05:40:58 UTC

J2000 position of star is 05:50:27.3 +24:56:28
Equinox of date position of star is 05:51:57.1 +24:56:46
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 57 degrees from the moon. Moon is 61% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 39.5 AU from the Sun and 38.5 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 83 seconds.
The 1-sigma cross-track error in the shadow position is 1626 km.
The sky-plane scale is 27946.4 km/arcsec.

The object has an absolute magnitude Hv=4.6
Diameter=721.1 km assuming a 5% albedo -- 30.6 sec chord
Diameter=294.4 km assuming a 30% albedo -- 12.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 145451, (2026/11/30 05:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.8 +07:24:35  0.4 17.57  58
Alnath         05:27:59.7 +28:37:40  1.6  6.52  63
132 Tau        05:50:40.1 +24:34:26  4.9  0.50  58
PPM 094875     05:49:14.6 +25:34:34  8.0  0.90  58
PPM 094936     05:51:08.3 +24:50:24 10.0  0.25  57
PPM 094970     05:52:41.1 +24:57:01 10.6  0.13  57
145451         05:52:06.7 +24:56:48 15.5        57
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 27.7 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)
Kamloops 05:43:33 -51.9 Dark Down 42.2 102.1 Up 05:36:06 - 05:51:00 9555
Sleaford 05:42:59 -56.7 Dark Up 50.1 117.9 Up 05:35:32 - 05:50:26 9465
Kelowna 05:43:32 -52.9 Dark Down 43.0 102.2 Up 05:36:05 - 05:50:59 9461
Peachland 05:43:34 -52.8 Dark Down 42.8 101.8 Up 05:36:07 - 05:51:01 9457
Summerland 05:43:33 -52.9 Dark Down 42.9 101.7 Up 05:36:06 - 05:51:00 9441
Penticton 05:43:34 -53.0 Dark Down 43.0 101.8 Up 05:36:07 - 05:51:01 9432
Victoria 05:43:44 -51.5 Dark Down 40.7 97.6 Up 05:36:17 - 05:51:11 9414
Oliver 05:43:35 -53.2 Dark Down 43.1 101.5 Up 05:36:08 - 05:51:02 9399
Anarchist Mountain Observatory 05:43:34 -53.4 Dark Down 43.2 101.5 Up 05:36:07 - 05:51:01 9379
Okanogan 05:43:36 -53.7 Dark Down 43.2 100.7 Up 05:36:09 - 05:51:03 9322
Brewster 05:43:37 -53.8 Dark Down 43.1 100.3 Up 05:36:10 - 05:51:04 9300
Manson/Chelan 05:43:39 -53.7 Dark Down 42.9 99.8 Up 05:36:12 - 05:51:06 9287
Wenatchee 05:43:40 -53.9 Dark Down 42.9 99.2 Up 05:36:13 - 05:51:07 9245
Ellensburg 05:43:42 -54.0 Dark Down 42.8 98.7 Up 05:36:15 - 05:51:09 9210
Yakima 05:43:42 -54.2 Dark Down 42.9 98.3 Up 05:36:15 - 05:51:09 9171
Toppenish/White Swan 05:43:43 -54.4 Dark Down 43.0 98.2 Up 05:36:16 - 05:51:10 9147
The Dalles 05:43:46 -54.4 Dark Down 42.6 96.9 Up 05:36:19 - 05:51:13 9088
PNWRO 05:43:41 -55.5 Dark Down 44.1 99.1 Up 05:36:14 - 05:51:08 9081
Maupin 05:43:47 -54.6 Dark Down 42.7 96.6 Up 05:36:20 - 05:51:14 9045
Sisters 05:43:50 -54.8 Dark Down 42.4 95.4 Up 05:36:23 - 05:51:17 8970
Bend 05:43:50 -55.1 Dark Down 42.7 95.4 Up 05:36:23 - 05:51:17 8941
Oregon Observatory 05:43:51 -55.1 Dark Down 42.6 95.1 Up 05:36:24 - 05:51:18 8927
Chiloquin 05:43:55 -55.4 Dark Down 42.4 93.6 Up 05:36:28 - 05:51:22 8806
Klamath Falls 05:43:55 -55.6 Dark Down 42.5 93.4 Up 05:36:28 - 05:51:22 8770
Cedarville 05:43:53 -57.0 Dark Down 43.7 93.9 Up 05:36:26 - 05:51:20 8665
Fall River/Burney 05:43:57 -56.4 Dark Down 42.8 92.6 Up 05:36:30 - 05:51:24 8644
Greenville 05:43:58 -57.1 Dark Down 43.2 92.0 Up 05:36:31 - 05:51:25 8543
Gimple 05:43:57 -57.2 Dark Down 43.3 92.1 Up 05:36:30 - 05:51:24 8541
Quincy 05:43:58 -57.2 Dark Down 43.2 91.8 Up 05:36:31 - 05:51:25 8522
Portola 05:43:58 -57.6 Dark Down 43.6 92.0 Up 05:36:31 - 05:51:25 8499
Reno 05:43:56 -58.1 Dark Down 44.1 92.2 Up 05:36:29 - 05:51:23 8457
Carson City 05:43:57 -58.3 Dark Down 44.1 91.9 Up 05:36:30 - 05:51:24 8420
Gardnerville 05:43:57 -58.4 Dark Down 44.2 91.7 Up 05:36:30 - 05:51:24 8394
Yerington 05:43:55 -58.8 Dark Down 44.6 92.1 Up 05:36:28 - 05:51:22 8386
Hawthorne 05:43:56 -59.4 Dark Down 45.0 92.0 Up 05:36:29 - 05:51:23 8326
Lee Vining 05:43:56 -59.3 Dark Down 44.7 91.1 Up 05:36:29 - 05:51:23 8279
Dunrhomin 05:43:16 -66.7 Dark Up 55.0 104.2 Up 05:35:49 - 05:50:43 8258
Nikitin 05:43:17 -66.8 Dark Up 55.0 103.9 Up 05:35:50 - 05:50:44 8239
CU-SBO 05:43:16 -66.9 Dark Up 55.0 103.8 Up 05:35:49 - 05:50:43 8234
Bishop 05:43:57 -60.1 Dark Down 45.3 91.0 Up 05:36:30 - 05:51:24 8201
Beatty 05:43:53 -61.4 Dark Down 46.6 91.5 Up 05:36:26 - 05:51:20 8117
Patrick 05:43:48 -64.2 Dark Down 48.9 91.6 Up 05:36:21 - 05:51:15 7900
Laughlin/Bullhead City 05:43:49 -63.7 Dark Down 48.4 90.9 Up 05:36:22 - 05:51:16 7889
Wildwood 05:44:03 -61.1 Dark Down 45.1 87.6 Up 05:36:36 - 05:51:30 7866
Lake Havasu City 05:43:51 -64.2 Dark Down 48.6 90.3 Up 05:36:24 - 05:51:18 7813
Idyllwild 05:43:58 -62.7 Dark Down 46.6 88.2 Up 05:36:31 - 05:51:25 7785
Calipatria 05:43:56 -63.8 Dark Down 47.6 88.1 Up 05:36:29 - 05:51:23 7694
George/Scottsdale 05:43:44 -66.4 Dark Down 50.6 90.8 Up 05:36:17 - 05:51:11 7680
Yuma 05:43:53 -64.6 Dark Down 48.3 88.1 Up 05:36:26 - 05:51:20 7628

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 145451, (2026/11/30 05:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.57  58
Alnath         05:26:17.6 +28:36:23  1.6  6.52  63
132 Tau        05:49:00.9 +24:34:02  4.9  0.50  58
PPM 094875     05:47:34.7 +25:34:07  8.0  0.90  58
PPM 094936     05:49:28.9 +24:50:01 10.0  0.25  57
PPM 094970     05:51:01.6 +24:56:42 10.6  0.13  57
145451         05:50:27.3 +24:56:28 15.5        57
Positions are for J2000

Event circumstances last updated at 2024/04/22 04:07:35 UT

Marc W. Buie, Southwest Research Institute

RECON