RECON: TNO occultation with 13UE15

Event between 13UE15 and star GA1180:03024138 with event index number of 2646070

Geocentric closest approach at 2028/12/17 05:33:52 UTC

J2000 position of star is 07:39:19.4 +28:31:16
Equinox of date position of star is 07:40:49.3 +28:27:52
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=23.0

[RECON map]
Object is 27.8 AU from the Sun and 26.9 AU from the Earth.
Apparent velocity is 21.0 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 145 seconds.
The 1-sigma cross-track error in the shadow position is 1135 km.
The sky-plane scale is 19518.1 km/arcsec.

The object has an absolute magnitude Hv=8.5
Diameter=121.9 km assuming a 5% albedo -- 5.8 sec chord
Diameter=49.8 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR

Star training set for 13UE15, (2028/12/17 05:42UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:05.4 +27:57:14  1.1  1.41 165
75Sig Gem      07:45:07.0 +28:48:41  5.3  0.95 166
PPM 097715     07:37:12.3 +28:33:43  7.5  0.87 167
PPM 097797     07:41:03.0 +28:42:31  9.8  0.26 167
PPM 097794     07:40:51.7 +28:27:24 11.2  0.06 167
13UE15         07:41:07.5 +28:27:10 14.6       166
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 26.5 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 05:37:24 -51.5 Dark Down 37.5 89.3 Up 05:24:51 - 05:49:56 6762

Kelowna 05:37:23 -52.4 Dark Down 38.1 89.4 Up 05:24:51 - 05:49:56 6664

Peachland 05:37:25 -52.3 Dark Down 37.9 89.0 Up 05:24:53 - 05:49:58 6660

Sleaford 05:36:50 -57.2 Dark Down 46.3 102.6 Up 05:24:18 - 05:49:23 6644

Summerland 05:37:25 -52.5 Dark Down 38.0 89.0 Up 05:24:52 - 05:49:57 6643

Penticton 05:37:25 -52.6 Dark Down 38.0 89.0 Up 05:24:52 - 05:49:57 6634

Victoria 05:37:34 -50.9 Dark Down 35.5 85.5 Up 05:25:02 - 05:50:07 6625

Oliver 05:37:26 -52.8 Dark Down 38.0 88.8 Up 05:24:54 - 05:49:59 6600

Anarchist Mountain Observatory 05:37:26 -53.0 Dark Down 38.2 88.8 Up 05:24:54 - 05:49:59 6579

Okanogan 05:37:28 -53.2 Dark Down 38.0 88.1 Up 05:24:56 - 05:50:01 6520

Brewster 05:37:29 -53.2 Dark Down 37.9 87.8 Up 05:24:57 - 05:50:02 6498

Manson/Chelan 05:37:31 -53.1 Dark Down 37.6 87.3 Up 05:24:59 - 05:50:04 6486

Wenatchee 05:37:32 -53.2 Dark Down 37.5 86.9 Up 05:25:00 - 05:50:05 6443

Ellensburg 05:37:33 -53.3 Dark Down 37.3 86.4 Up 05:25:01 - 05:50:06 6407

Yakima 05:37:34 -53.5 Dark Down 37.3 86.1 Up 05:25:02 - 05:50:07 6367

Toppenish/White Swan 05:37:34 -53.7 Dark Down 37.4 86.0 Up 05:25:01 - 05:50:06 6342

The Dalles 05:37:38 -53.5 Dark Down 36.8 84.9 Up 05:25:05 - 05:50:10 6284

PNWRO 05:37:32 -54.8 Dark Down 38.4 86.8 Up 05:25:00 - 05:50:05 6270

Maupin 05:37:38 -53.8 Dark Down 36.8 84.7 Up 05:25:06 - 05:50:11 6240

Sisters 05:37:41 -53.8 Dark Down 36.4 83.7 Up 05:25:08 - 05:50:13 6164

Bend 05:37:41 -54.1 Dark Down 36.5 83.7 Up 05:25:09 - 05:50:14 6134

Oregon Observatory 05:37:42 -54.1 Dark Down 36.4 83.5 Up 05:25:10 - 05:50:15 6120

Chiloquin 05:37:46 -54.3 Dark Down 36.0 82.3 Up 05:25:14 - 05:50:19 5998

Klamath Falls 05:37:47 -54.5 Dark Down 36.0 82.1 Up 05:25:14 - 05:50:19 5961

Cedarville 05:37:44 -55.8 Dark Down 37.1 82.5 Up 05:25:12 - 05:50:17 5849

Fall River/Burney 05:37:48 -55.1 Dark Down 36.1 81.5 Up 05:25:15 - 05:50:20 5831

Greenville 05:37:49 -55.8 Dark Down 36.3 81.1 Up 05:25:16 - 05:50:21 5727

Gimple 05:37:49 -55.8 Dark Down 36.4 81.1 Up 05:25:16 - 05:50:21 5724

Quincy 05:37:50 -55.8 Dark Down 36.3 80.9 Up 05:25:17 - 05:50:22 5706

Portola 05:37:49 -56.2 Dark Down 36.6 81.1 Up 05:25:16 - 05:50:21 5680

Reno 05:37:48 -56.8 Dark Down 37.1 81.2 Up 05:25:15 - 05:50:20 5636

Carson City 05:37:48 -56.9 Dark Down 37.0 81.0 Up 05:25:16 - 05:50:21 5598

Gardnerville 05:37:48 -57.0 Dark Down 37.0 80.8 Up 05:25:15 - 05:50:20 5572

Yerington 05:37:47 -57.4 Dark Down 37.5 81.2 Up 05:25:15 - 05:50:20 5561

Hawthorne 05:37:47 -58.0 Dark Down 37.8 81.1 Up 05:25:15 - 05:50:20 5499

Lee Vining 05:37:49 -57.8 Dark Down 37.4 80.4 Up 05:25:16 - 05:50:21 5453

Dunrhomin 05:37:09 -66.2 Dark Down 48.2 90.5 Up 05:24:36 - 05:49:41 5398

Nikitin 05:37:09 -66.3 Dark Down 48.2 90.3 Up 05:24:37 - 05:49:42 5378

CU-SBO 05:37:10 -66.3 Dark Down 48.1 90.1 Up 05:24:37 - 05:49:42 5372

Bishop 05:37:48 -58.5 Dark Down 37.8 80.3 Up 05:25:16 - 05:50:21 5372

Beatty 05:37:45 -59.9 Dark Down 39.0 80.8 Up 05:25:13 - 05:50:18 5282

Patrick 05:37:40 -62.5 Dark Down 41.1 80.9 Up 05:25:08 - 05:50:13 5053

Laughlin/Bullhead City 05:37:42 -62.1 Dark Down 40.5 80.4 Up 05:25:09 - 05:50:14 5044

Wildwood 05:37:54 -59.2 Dark Down 37.1 77.8 Up 05:25:21 - 05:50:26 5035

Lake Havasu City 05:37:43 -62.5 Dark Down 40.6 80.0 Up 05:25:10 - 05:50:15 4967

Idyllwild 05:37:49 -60.7 Dark Down 38.5 78.3 Up 05:25:17 - 05:50:22 4946

Calipatria 05:37:48 -61.8 Dark Down 39.4 78.3 Up 05:25:15 - 05:50:20 4851

George/Scottsdale 05:37:37 -64.6 Dark Down 42.4 80.3 Up 05:25:04 - 05:50:09 4826

Yuma 05:37:46 -62.7 Dark Down 40.0 78.3 Up 05:25:13 - 05:50:18 4782

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 13UE15, (2028/12/17 05:42UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  1.41 165
75Sig Gem      07:43:18.8 +28:52:56  5.3  0.95 166
PPM 097715     07:35:24.0 +28:37:40  7.5  0.87 167
PPM 097797     07:39:14.7 +28:46:37  9.8  0.26 167
PPM 097794     07:39:03.6 +28:31:29 11.2  0.06 167
13UE15         07:39:19.4 +28:31:16 14.6       167
Positions are for J2000

Event circumstances last updated at 2024/01/31 03:20:27 UT

Marc W. Buie, Southwest Research Institute

RECON

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	05:37:24	-51.5	Dark	Down	37.5	89.3	Up	05:24:51 - 05:49:56	6762
Kelowna	05:37:23	-52.4	Dark	Down	38.1	89.4	Up	05:24:51 - 05:49:56	6664
Peachland	05:37:25	-52.3	Dark	Down	37.9	89.0	Up	05:24:53 - 05:49:58	6660
Sleaford	05:36:50	-57.2	Dark	Down	46.3	102.6	Up	05:24:18 - 05:49:23	6644
Summerland	05:37:25	-52.5	Dark	Down	38.0	89.0	Up	05:24:52 - 05:49:57	6643
Penticton	05:37:25	-52.6	Dark	Down	38.0	89.0	Up	05:24:52 - 05:49:57	6634
Victoria	05:37:34	-50.9	Dark	Down	35.5	85.5	Up	05:25:02 - 05:50:07	6625
Oliver	05:37:26	-52.8	Dark	Down	38.0	88.8	Up	05:24:54 - 05:49:59	6600
Anarchist Mountain Observatory	05:37:26	-53.0	Dark	Down	38.2	88.8	Up	05:24:54 - 05:49:59	6579
Okanogan	05:37:28	-53.2	Dark	Down	38.0	88.1	Up	05:24:56 - 05:50:01	6520
Brewster	05:37:29	-53.2	Dark	Down	37.9	87.8	Up	05:24:57 - 05:50:02	6498
Manson/Chelan	05:37:31	-53.1	Dark	Down	37.6	87.3	Up	05:24:59 - 05:50:04	6486
Wenatchee	05:37:32	-53.2	Dark	Down	37.5	86.9	Up	05:25:00 - 05:50:05	6443
Ellensburg	05:37:33	-53.3	Dark	Down	37.3	86.4	Up	05:25:01 - 05:50:06	6407
Yakima	05:37:34	-53.5	Dark	Down	37.3	86.1	Up	05:25:02 - 05:50:07	6367
Toppenish/White Swan	05:37:34	-53.7	Dark	Down	37.4	86.0	Up	05:25:01 - 05:50:06	6342
The Dalles	05:37:38	-53.5	Dark	Down	36.8	84.9	Up	05:25:05 - 05:50:10	6284
PNWRO	05:37:32	-54.8	Dark	Down	38.4	86.8	Up	05:25:00 - 05:50:05	6270
Maupin	05:37:38	-53.8	Dark	Down	36.8	84.7	Up	05:25:06 - 05:50:11	6240
Sisters	05:37:41	-53.8	Dark	Down	36.4	83.7	Up	05:25:08 - 05:50:13	6164
Bend	05:37:41	-54.1	Dark	Down	36.5	83.7	Up	05:25:09 - 05:50:14	6134
Oregon Observatory	05:37:42	-54.1	Dark	Down	36.4	83.5	Up	05:25:10 - 05:50:15	6120
Chiloquin	05:37:46	-54.3	Dark	Down	36.0	82.3	Up	05:25:14 - 05:50:19	5998
Klamath Falls	05:37:47	-54.5	Dark	Down	36.0	82.1	Up	05:25:14 - 05:50:19	5961
Cedarville	05:37:44	-55.8	Dark	Down	37.1	82.5	Up	05:25:12 - 05:50:17	5849
Fall River/Burney	05:37:48	-55.1	Dark	Down	36.1	81.5	Up	05:25:15 - 05:50:20	5831
Greenville	05:37:49	-55.8	Dark	Down	36.3	81.1	Up	05:25:16 - 05:50:21	5727
Gimple	05:37:49	-55.8	Dark	Down	36.4	81.1	Up	05:25:16 - 05:50:21	5724
Quincy	05:37:50	-55.8	Dark	Down	36.3	80.9	Up	05:25:17 - 05:50:22	5706
Portola	05:37:49	-56.2	Dark	Down	36.6	81.1	Up	05:25:16 - 05:50:21	5680
Reno	05:37:48	-56.8	Dark	Down	37.1	81.2	Up	05:25:15 - 05:50:20	5636
Carson City	05:37:48	-56.9	Dark	Down	37.0	81.0	Up	05:25:16 - 05:50:21	5598
Gardnerville	05:37:48	-57.0	Dark	Down	37.0	80.8	Up	05:25:15 - 05:50:20	5572
Yerington	05:37:47	-57.4	Dark	Down	37.5	81.2	Up	05:25:15 - 05:50:20	5561
Hawthorne	05:37:47	-58.0	Dark	Down	37.8	81.1	Up	05:25:15 - 05:50:20	5499
Lee Vining	05:37:49	-57.8	Dark	Down	37.4	80.4	Up	05:25:16 - 05:50:21	5453
Dunrhomin	05:37:09	-66.2	Dark	Down	48.2	90.5	Up	05:24:36 - 05:49:41	5398
Nikitin	05:37:09	-66.3	Dark	Down	48.2	90.3	Up	05:24:37 - 05:49:42	5378
CU-SBO	05:37:10	-66.3	Dark	Down	48.1	90.1	Up	05:24:37 - 05:49:42	5372
Bishop	05:37:48	-58.5	Dark	Down	37.8	80.3	Up	05:25:16 - 05:50:21	5372
Beatty	05:37:45	-59.9	Dark	Down	39.0	80.8	Up	05:25:13 - 05:50:18	5282
Patrick	05:37:40	-62.5	Dark	Down	41.1	80.9	Up	05:25:08 - 05:50:13	5053
Laughlin/Bullhead City	05:37:42	-62.1	Dark	Down	40.5	80.4	Up	05:25:09 - 05:50:14	5044
Wildwood	05:37:54	-59.2	Dark	Down	37.1	77.8	Up	05:25:21 - 05:50:26	5035
Lake Havasu City	05:37:43	-62.5	Dark	Down	40.6	80.0	Up	05:25:10 - 05:50:15	4967
Idyllwild	05:37:49	-60.7	Dark	Down	38.5	78.3	Up	05:25:17 - 05:50:22	4946
Calipatria	05:37:48	-61.8	Dark	Down	39.4	78.3	Up	05:25:15 - 05:50:20	4851
George/Scottsdale	05:37:37	-64.6	Dark	Down	42.4	80.3	Up	05:25:04 - 05:50:09	4826
Yuma	05:37:46	-62.7	Dark	Down	40.0	78.3	Up	05:25:13 - 05:50:18	4782