RECON: TNO occultation with 12UD178

Event between 12UD178 and star GA1140:01284964 with event index number of 1410009

Geocentric closest approach at 2024/11/25 08:55:01 UTC

J2000 position of star is 05:33:43.8 +25:53:04
Equinox of date position of star is 05:34:56.1 +25:53:48
Stellar brightness G=15.5, use SENSEUP=128
Star is 95 degrees from the moon. Moon is 29% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 37.3 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 577 seconds.
The 1-sigma cross-track error in the shadow position is 3409 km.
The sky-plane scale is 26362.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=201.4 km assuming a 5% albedo -- 8.8 sec chord
Diameter=82.2 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 12UD178, (2024/11/25 08:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.1 +16:33:27  0.8 16.39 109
Alnath         05:27:52.1 +28:37:35  1.6  3.18  96
PPM 094572     05:38:42.3 +26:56:16  5.6  1.29  94
PPM 094544     05:37:35.6 +26:16:56  8.3  0.65  94
PPM 094470     05:34:30.2 +25:54:35  9.3  0.17  95
12UD178        05:35:16.4 +25:54:00 15.5        94
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 1.6 sigma about the mid-time.
The median site spacing is 22.5 km RECON observability=1.0 and success probability=12.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:55:17 -57.8 Dark Down 65.8 170.8 Up 08:40:17 - 09:10:17 -2252
Summerland 08:55:17 -58.1 Dark Down 66.0 170.0 Up 08:40:17 - 09:10:17 -2281
Penticton 08:55:17 -58.1 Dark Down 66.1 170.3 Up 08:40:17 - 09:10:17 -2288
Okanagan Falls 08:55:17 -58.3 Dark Down 66.3 170.1 Up 08:40:17 - 09:10:17 -2308
Oliver 08:55:17 -58.4 Dark Down 66.5 170.1 Up 08:40:17 - 09:10:17 -2324
Anarchist Mountain Observatory 08:55:17 -58.5 Dark Down 66.6 170.5 Up 08:40:17 - 09:10:17 -2342
Oroville 08:55:17 -58.6 Dark Down 66.7 170.3 Up 08:40:17 - 09:10:17 -2350
Tonasket 08:55:17 -58.8 Dark Down 66.9 170.2 Up 08:40:17 - 09:10:17 -2374
Okanogan 08:55:17 -59.1 Dark Down 67.3 169.7 Up 08:40:17 - 09:10:17 -2408
Brewster 08:55:18 -59.4 Dark Down 67.5 169.1 Up 08:40:18 - 09:10:18 -2435
Manson/Chelan 08:55:20 -59.7 Dark Down 67.7 168.2 Up 08:40:20 - 09:10:20 -2456
Entiat 08:55:20 -60.0 Dark Down 67.9 167.9 Up 08:40:20 - 09:10:20 -2479
Wenatchee 08:55:20 -60.2 Dark Down 68.1 167.5 Up 08:40:20 - 09:10:20 -2505
Ellensburg 08:55:21 -60.6 Dark Down 68.5 166.8 Up 08:40:21 - 09:10:21 -2547
Yakima 08:55:21 -61.0 Dark Down 68.9 166.5 Up 08:40:21 - 09:10:21 -2589
Toppenish/White Swan 08:55:21 -61.1 Dark Down 69.1 166.8 Up 08:40:21 - 09:10:21 -2612
Pasco 08:55:17 -60.7 Dark Down 69.4 169.9 Up 08:40:17 - 09:10:17 -2627
PNWRO 08:55:16 -60.8 Dark Down 69.7 170.4 Up 08:40:16 - 09:10:16 -2653
George/Umatilla 08:55:17 -61.1 Dark Down 69.7 169.2 Up 08:40:17 - 09:10:17 -2662
Goldendale 08:55:22 -61.7 Dark Down 69.6 165.4 Up 08:40:22 - 09:10:22 -2669
The Dalles 08:55:23 -62.0 Dark Down 69.7 164.3 Up 08:40:23 - 09:10:23 -2691
Maupin 08:55:23 -62.4 Dark Down 70.1 164.3 Up 08:40:23 - 09:10:23 -2735
Madras/Culver 08:55:24 -62.8 Dark Down 70.7 163.8 Up 08:40:24 - 09:10:24 -2793
Sisters 08:55:25 -63.3 Dark Down 70.9 162.3 Up 08:40:25 - 09:10:25 -2826
Redmond 08:55:24 -63.1 Dark Down 71.0 163.3 Up 08:40:24 - 09:10:24 -2830
Bend 08:55:25 -63.4 Dark Down 71.2 162.8 Up 08:40:25 - 09:10:25 -2852
Oregon Observatory 08:55:25 -63.6 Dark Down 71.3 162.3 Up 08:40:25 - 09:10:25 -2870
La Pine/Gilchrist 08:55:25 -63.8 Dark Down 71.5 161.9 Up 08:40:25 - 09:10:25 -2892
North Lake 08:55:23 -63.9 Dark Down 72.0 163.2 Up 08:40:23 - 09:10:23 -2939
Paisley 08:55:22 -64.1 Dark Down 72.6 163.7 Up 08:40:22 - 09:10:22 -2999
Chiloquin 08:55:27 -64.8 Dark Down 72.5 159.8 Up 08:40:27 - 09:10:27 -3008
Klamath Falls 08:55:27 -65.1 Dark Down 72.8 159.7 Up 08:40:27 - 09:10:27 -3045
Lakeview 08:55:22 -64.5 Dark Down 73.2 163.8 Up 08:40:22 - 09:10:22 -3053
Tulelake 08:55:26 -65.1 Dark Down 73.1 160.3 Up 08:40:26 - 09:10:26 -3075
Cedarville 08:55:21 -64.9 Dark Down 73.8 163.8 Up 08:40:21 - 09:10:21 -3124
Fall River/Burney 08:55:26 -65.8 Dark Down 74.0 159.4 Up 08:40:26 - 09:10:26 -3172
Susanville 08:55:23 -66.0 Dark Down 74.8 161.0 Up 08:40:23 - 09:10:23 -3242
Niwot 08:54:27 -56.9 Dark Up 73.6 212.9 Up 08:39:27 - 09:09:27 -3242
SwRI 08:54:27 -57.0 Dark Up 73.7 212.8 Up 08:39:27 - 09:09:27 -3254
Greenville 08:55:24 -66.3 Dark Down 75.0 159.7 Up 08:40:24 - 09:10:24 -3271
Gimple 08:55:24 -66.3 Dark Down 75.0 160.0 Up 08:40:24 - 09:10:24 -3271
Quincy 08:55:24 -66.5 Dark Down 75.2 159.5 Up 08:40:24 - 09:10:24 -3293
Portola 08:55:23 -66.3 Dark Down 75.4 160.9 Up 08:40:23 - 09:10:23 -3308
Reno 08:55:21 -66.2 Dark Down 75.8 162.8 Up 08:40:21 - 09:10:21 -3338
Carson City 08:55:20 -66.4 Dark Down 76.2 162.5 Up 08:40:20 - 09:10:20 -3377
Yerington 08:55:18 -66.2 Dark Down 76.5 164.5 Up 08:40:18 - 09:10:18 -3399
Gardnerville 08:55:20 -66.6 Dark Down 76.4 162.3 Up 08:40:20 - 09:10:20 -3403
Hawthorne 08:55:17 -66.3 Dark Down 77.0 166.1 Up 08:40:17 - 09:10:17 -3450
Tonopah 08:55:11 -65.7 Dark Down 77.7 171.3 Up 08:40:11 - 09:10:11 -3502
Lee Vining 08:55:18 -66.9 Dark Down 77.5 163.5 Up 08:40:18 - 09:10:18 -3511
Bishop 08:55:15 -66.9 Dark Down 78.2 165.7 Up 08:40:15 - 09:10:15 -3577
Beatty 08:55:09 -66.2 Dark Down 78.9 172.5 Up 08:40:09 - 09:10:09 -3628
Lone Pine 08:55:14 -67.2 Dark Down 79.0 166.3 Up 08:40:14 - 09:10:14 -3660
Indian Springs 08:55:06 -65.7 Dark Down 79.3 177.4 Up 08:40:06 - 09:10:06 -3664
Henderson 08:55:03 -65.5 Dark Down 79.8 180.7 Up 08:40:03 - 09:10:03 -3722
Searchlight/Boulder City 08:55:02 -65.8 Dark Down 80.4 181.1 Up 08:40:02 - 09:10:02 -3785
Patrick 08:54:58 -65.1 Dark Down 80.4 186.7 Up 08:39:58 - 09:09:58 -3789
CPSLO 08:55:25 -69.6 Dark Down 79.5 152.1 Up 08:40:25 - 09:10:25 -3796
Kingman/Dolan Springs 08:54:59 -65.3 Dark Down 80.7 185.9 Up 08:39:59 - 09:09:59 -3814
Laughlin/Bullhead City 08:55:01 -65.7 Dark Down 80.7 183.0 Up 08:40:01 - 09:10:01 -3817
DCO 08:54:55 -64.7 Dark Down 80.6 190.8 Up 08:39:55 - 09:09:55 -3821
Mohave Valley 08:55:01 -65.8 Dark Down 81.0 183.2 Up 08:40:01 - 09:10:01 -3847
Lake Havasu City 08:55:00 -65.8 Dark Down 81.4 184.8 Up 08:40:00 - 09:10:00 -3890
Parker 08:54:59 -66.0 Dark Down 81.7 185.1 Up 08:39:59 - 09:09:59 -3929
Wildwood 08:55:17 -69.0 Dark Down 81.3 159.3 Up 08:40:17 - 09:10:17 -3934
Idyllwild 08:55:09 -67.9 Dark Down 82.0 169.8 Up 08:40:09 - 09:10:09 -3975
Blythe 08:55:01 -66.4 Dark Down 82.3 183.5 Up 08:40:01 - 09:10:01 -3987
Calipatria 08:55:04 -67.3 Dark Down 82.8 177.2 Up 08:40:04 - 09:10:04 -4042
Yuma 08:55:01 -66.9 Dark Down 83.2 183.7 Up 08:40:01 - 09:10:01 -4089

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 12UD178, (2024/11/25 08:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 16.39 109
Alnath         05:26:17.5 +28:36:23  1.6  3.18  96
PPM 094572     05:37:08.9 +26:55:28  5.6  1.29  94
PPM 094544     05:36:02.7 +26:16:05  8.3  0.65  94
PPM 094470     05:32:57.6 +25:53:38  9.3  0.17  95
12UD178        05:33:43.8 +25:53:04 15.5        95
Positions are for J2000

Event circumstances last updated at 2019/06/08 09:31:10 UT

Marc W. Buie, Southwest Research Institute

RECON