RECON: TNO occultation with 543377

Event between (543377) 14BF70 and star GA0560:18176966 with event index number of 2254313

Geocentric closest approach at 2028/05/31 06:39:35 UTC

J2000 position of star is 17:08:56.4 -32:19:01
Equinox of date position of star is 17:10:31.9 -32:20:48
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 99 degrees from the moon. Moon is 50% illuminated.
Apparent brightness V=20.4

[RECON map]
Object is 12.4 AU from the Sun and 11.4 AU from the Earth.
Apparent velocity is 17.9 km/sec on the sky relative to the star, or, 7.8 arcsec/hr.
The 1-sigma error in the time of the event is 138 seconds.
The 1-sigma cross-track error in the shadow position is 536 km.
The sky-plane scale is 8244.7 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=75.5 km assuming a 5% albedo -- 4.3 sec chord
Diameter=30.8 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR

Star training set for 543377, (2028/05/31 06:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.3 -26:29:33  0.9 10.42  90
26Eps Sco      16:52:00.9 -34:20:30  2.3  4.40  95
PPM 296042     17:14:49.6 -32:28:11  6.2  0.86  99
PPM 296006     17:13:02.1 -32:13:31  8.5  0.49  99
PPM 295961     17:10:29.0 -32:08:18  9.9  0.22  99
543377         17:10:47.2 -32:21:05 15.8        99
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 31.0 km RECON observability=0.1 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 06:41:11 -15.8 AT Up 4.8 168.5 Really Low 06:29:09 - 06:53:12 7320

Dunrhomin 06:41:17 -27.6 Dark Up 16.5 168.8 Really Low 06:29:16 - 06:53:19 7034

Nikitin 06:41:18 -27.8 Dark Up 16.6 168.7 Really Low 06:29:16 - 06:53:19 7027

CU-SBO 06:41:18 -27.9 Dark Up 16.7 168.7 Really Low 06:29:16 - 06:53:19 7023

Kelowna 06:42:01 -16.3 AT Up 4.4 157.4 Really Low 06:29:59 - 06:54:02 6990

Kamloops 06:42:01 -15.4 AT Up 3.5 156.7 Really Low 06:30:00 - 06:54:03 6987

Peachland 06:42:01 -16.4 AT Up 4.5 157.2 Really Low 06:30:00 - 06:54:03 6980

Penticton 06:42:02 -16.6 AT Up 4.7 157.4 Really Low 06:30:00 - 06:54:03 6980

Summerland 06:42:02 -16.5 AT Up 4.6 157.3 Really Low 06:30:00 - 06:54:03 6979

Anarchist Mountain Observatory 06:42:01 -17.1 AT Up 5.2 157.5 Really Low 06:30:00 - 06:54:03 6972

Oliver 06:42:02 -16.9 AT Up 5.0 157.4 Really Low 06:30:00 - 06:54:03 6971

Okanogan 06:42:04 -17.7 AT Up 5.8 157.3 Really Low 06:30:02 - 06:54:05 6948

Brewster 06:42:05 -17.9 AT Up 6.0 157.1 Really Low 06:30:04 - 06:54:07 6935

Manson/Chelan 06:42:06 -18.0 Dark Up 6.1 156.8 Really Low 06:30:05 - 06:54:08 6920

Wenatchee 06:42:08 -18.5 Dark Up 6.5 156.7 Really Low 06:30:06 - 06:54:09 6902

PNWRO 06:42:06 -20.1 Dark Up 8.1 157.8 Really Low 06:30:04 - 06:54:07 6898

Ellensburg 06:42:10 -18.8 Dark Up 6.8 156.5 Really Low 06:30:08 - 06:54:11 6883

Yakima 06:42:10 -19.2 Dark Up 7.2 156.5 Really Low 06:30:09 - 06:54:12 6870

Toppenish/White Swan 06:42:10 -19.4 Dark Up 7.4 156.6 Really Low 06:30:09 - 06:54:12 6868

Victoria 06:42:16 -16.7 AT Up 4.6 154.3 Really Low 06:30:15 - 06:54:18 6849

The Dalles 06:42:15 -20.0 Dark Up 7.9 155.9 Really Low 06:30:13 - 06:54:16 6821

Maupin 06:42:15 -20.4 Dark Up 8.3 156.0 Really Low 06:30:14 - 06:54:17 6810

Sisters 06:42:19 -21.1 Dark Up 9.0 155.5 Really Low 06:30:17 - 06:54:20 6766

Bend 06:42:18 -21.4 Dark Up 9.3 155.7 Really Low 06:30:16 - 06:54:19 6766

Oregon Observatory 06:42:19 -21.5 Dark Up 9.4 155.6 Really Low 06:30:17 - 06:54:20 6756

Cedarville 06:42:18 -24.1 Dark Up 11.9 156.5 Really Low 06:30:17 - 06:54:20 6705

Chiloquin 06:42:23 -22.7 Dark Up 10.5 155.2 Really Low 06:30:21 - 06:54:24 6695

Klamath Falls 06:42:23 -23.0 Dark Up 10.8 155.2 Really Low 06:30:21 - 06:54:24 6684

Fall River/Burney 06:42:23 -24.2 Dark Up 12.0 155.5 Really Low 06:30:22 - 06:54:25 6648

Reno 06:42:19 -26.0 Dark Up 13.8 156.6 Really Low 06:30:18 - 06:54:21 6634

Yerington 06:42:18 -26.7 Dark Up 14.6 157.0 Really Low 06:30:16 - 06:54:19 6630

Gimple 06:42:23 -25.2 Dark Up 13.0 155.8 Really Low 06:30:22 - 06:54:25 6627

Hawthorne 06:42:16 -27.3 Dark Up 15.1 157.4 Really Low 06:30:15 - 06:54:18 6626

Portola 06:42:22 -25.6 Dark Up 13.4 156.1 Really Low 06:30:21 - 06:54:24 6626

Greenville 06:42:23 -25.2 Dark Up 13.0 155.7 Really Low 06:30:22 - 06:54:25 6625

Patrick 06:42:00 -31.3 Dark Up 19.4 161.0 Really Low 06:29:58 - 06:54:01 6623

Carson City 06:42:20 -26.4 Dark Up 14.2 156.6 Really Low 06:30:19 - 06:54:22 6620

Quincy 06:42:24 -25.4 Dark Up 13.1 155.7 Really Low 06:30:22 - 06:54:25 6616

Gardnerville 06:42:20 -26.6 Dark Up 14.4 156.6 Really Low 06:30:19 - 06:54:22 6610

Beatty 06:42:11 -29.3 Dark Up 17.2 158.8 Really Low 06:30:09 - 06:54:12 6609

George/Scottsdale 06:41:53 -33.3 Dark Up 21.5 162.5 Low 06:29:51 - 06:53:54 6597

Laughlin/Bullhead City 06:42:03 -31.4 Dark Up 19.4 160.4 Really Low 06:30:02 - 06:54:05 6591

Lee Vining 06:42:19 -27.7 Dark Up 15.5 157.0 Really Low 06:30:18 - 06:54:21 6587

Bishop 06:42:17 -28.5 Dark Up 16.3 157.5 Really Low 06:30:16 - 06:54:19 6581

Lake Havasu City 06:42:03 -32.1 Dark Up 20.1 160.5 Low 06:30:01 - 06:54:04 6566

Yuma 06:42:06 -33.8 Dark Up 21.7 160.0 Low 06:30:04 - 06:54:07 6466

Calipatria 06:42:09 -33.2 Dark Up 21.1 159.3 Low 06:30:08 - 06:54:11 6462

Idyllwild 06:42:14 -32.3 Dark Up 20.2 158.4 Low 06:30:13 - 06:54:16 6458

Wildwood 06:42:22 -31.5 Dark Up 19.2 156.9 Really Low 06:30:21 - 06:54:24 6417

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 543377, (2028/05/31 06:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.42  90
26Eps Sco      16:50:08.8 -34:17:41  2.3  4.40  95
PPM 296042     17:12:58.5 -32:26:18  6.2  0.86  99
PPM 296006     17:11:11.3 -32:11:33  8.5  0.49  99
PPM 295961     17:08:38.4 -32:06:13  9.9  0.22  99
543377         17:08:56.4 -32:19:01 15.8        99
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:29:31 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)
Sleaford	06:41:11	-15.8	AT	Up	4.8	168.5	Really Low	06:29:09 - 06:53:12	7320
Dunrhomin	06:41:17	-27.6	Dark	Up	16.5	168.8	Really Low	06:29:16 - 06:53:19	7034
Nikitin	06:41:18	-27.8	Dark	Up	16.6	168.7	Really Low	06:29:16 - 06:53:19	7027
CU-SBO	06:41:18	-27.9	Dark	Up	16.7	168.7	Really Low	06:29:16 - 06:53:19	7023
Kelowna	06:42:01	-16.3	AT	Up	4.4	157.4	Really Low	06:29:59 - 06:54:02	6990
Kamloops	06:42:01	-15.4	AT	Up	3.5	156.7	Really Low	06:30:00 - 06:54:03	6987
Peachland	06:42:01	-16.4	AT	Up	4.5	157.2	Really Low	06:30:00 - 06:54:03	6980
Penticton	06:42:02	-16.6	AT	Up	4.7	157.4	Really Low	06:30:00 - 06:54:03	6980
Summerland	06:42:02	-16.5	AT	Up	4.6	157.3	Really Low	06:30:00 - 06:54:03	6979
Anarchist Mountain Observatory	06:42:01	-17.1	AT	Up	5.2	157.5	Really Low	06:30:00 - 06:54:03	6972
Oliver	06:42:02	-16.9	AT	Up	5.0	157.4	Really Low	06:30:00 - 06:54:03	6971
Okanogan	06:42:04	-17.7	AT	Up	5.8	157.3	Really Low	06:30:02 - 06:54:05	6948
Brewster	06:42:05	-17.9	AT	Up	6.0	157.1	Really Low	06:30:04 - 06:54:07	6935
Manson/Chelan	06:42:06	-18.0	Dark	Up	6.1	156.8	Really Low	06:30:05 - 06:54:08	6920
Wenatchee	06:42:08	-18.5	Dark	Up	6.5	156.7	Really Low	06:30:06 - 06:54:09	6902
PNWRO	06:42:06	-20.1	Dark	Up	8.1	157.8	Really Low	06:30:04 - 06:54:07	6898
Ellensburg	06:42:10	-18.8	Dark	Up	6.8	156.5	Really Low	06:30:08 - 06:54:11	6883
Yakima	06:42:10	-19.2	Dark	Up	7.2	156.5	Really Low	06:30:09 - 06:54:12	6870
Toppenish/White Swan	06:42:10	-19.4	Dark	Up	7.4	156.6	Really Low	06:30:09 - 06:54:12	6868
Victoria	06:42:16	-16.7	AT	Up	4.6	154.3	Really Low	06:30:15 - 06:54:18	6849
The Dalles	06:42:15	-20.0	Dark	Up	7.9	155.9	Really Low	06:30:13 - 06:54:16	6821
Maupin	06:42:15	-20.4	Dark	Up	8.3	156.0	Really Low	06:30:14 - 06:54:17	6810
Sisters	06:42:19	-21.1	Dark	Up	9.0	155.5	Really Low	06:30:17 - 06:54:20	6766
Bend	06:42:18	-21.4	Dark	Up	9.3	155.7	Really Low	06:30:16 - 06:54:19	6766
Oregon Observatory	06:42:19	-21.5	Dark	Up	9.4	155.6	Really Low	06:30:17 - 06:54:20	6756
Cedarville	06:42:18	-24.1	Dark	Up	11.9	156.5	Really Low	06:30:17 - 06:54:20	6705
Chiloquin	06:42:23	-22.7	Dark	Up	10.5	155.2	Really Low	06:30:21 - 06:54:24	6695
Klamath Falls	06:42:23	-23.0	Dark	Up	10.8	155.2	Really Low	06:30:21 - 06:54:24	6684
Fall River/Burney	06:42:23	-24.2	Dark	Up	12.0	155.5	Really Low	06:30:22 - 06:54:25	6648
Reno	06:42:19	-26.0	Dark	Up	13.8	156.6	Really Low	06:30:18 - 06:54:21	6634
Yerington	06:42:18	-26.7	Dark	Up	14.6	157.0	Really Low	06:30:16 - 06:54:19	6630
Gimple	06:42:23	-25.2	Dark	Up	13.0	155.8	Really Low	06:30:22 - 06:54:25	6627
Hawthorne	06:42:16	-27.3	Dark	Up	15.1	157.4	Really Low	06:30:15 - 06:54:18	6626
Portola	06:42:22	-25.6	Dark	Up	13.4	156.1	Really Low	06:30:21 - 06:54:24	6626
Greenville	06:42:23	-25.2	Dark	Up	13.0	155.7	Really Low	06:30:22 - 06:54:25	6625
Patrick	06:42:00	-31.3	Dark	Up	19.4	161.0	Really Low	06:29:58 - 06:54:01	6623
Carson City	06:42:20	-26.4	Dark	Up	14.2	156.6	Really Low	06:30:19 - 06:54:22	6620
Quincy	06:42:24	-25.4	Dark	Up	13.1	155.7	Really Low	06:30:22 - 06:54:25	6616
Gardnerville	06:42:20	-26.6	Dark	Up	14.4	156.6	Really Low	06:30:19 - 06:54:22	6610
Beatty	06:42:11	-29.3	Dark	Up	17.2	158.8	Really Low	06:30:09 - 06:54:12	6609
George/Scottsdale	06:41:53	-33.3	Dark	Up	21.5	162.5	Low	06:29:51 - 06:53:54	6597
Laughlin/Bullhead City	06:42:03	-31.4	Dark	Up	19.4	160.4	Really Low	06:30:02 - 06:54:05	6591
Lee Vining	06:42:19	-27.7	Dark	Up	15.5	157.0	Really Low	06:30:18 - 06:54:21	6587
Bishop	06:42:17	-28.5	Dark	Up	16.3	157.5	Really Low	06:30:16 - 06:54:19	6581
Lake Havasu City	06:42:03	-32.1	Dark	Up	20.1	160.5	Low	06:30:01 - 06:54:04	6566
Yuma	06:42:06	-33.8	Dark	Up	21.7	160.0	Low	06:30:04 - 06:54:07	6466
Calipatria	06:42:09	-33.2	Dark	Up	21.1	159.3	Low	06:30:08 - 06:54:11	6462
Idyllwild	06:42:14	-32.3	Dark	Up	20.2	158.4	Low	06:30:13 - 06:54:16	6458
Wildwood	06:42:22	-31.5	Dark	Up	19.2	156.9	Really Low	06:30:21 - 06:54:24	6417