RECON: TNO occultation with 470308

Event between (470308) 07JH43 and star GA0600:20430677 with event index number of 2221614

Geocentric closest approach at 2028/07/12 05:49:47 UTC

J2000 position of star is 17:21:05.7 -28:55:43
Equinox of date position of star is 17:22:38.8 -28:57:04
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 91 degrees from the moon. Moon is 74% illuminated.
Apparent brightness V=20.9

[RECON map]
Object is 40.5 AU from the Sun and 39.6 AU from the Earth.
Apparent velocity is 21.3 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 152 seconds.
The 1-sigma cross-track error in the shadow position is 1975 km.
The sky-plane scale is 28725.8 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=758.6 km assuming a 5% albedo -- 30.7 sec chord
Diameter=309.7 km assuming a 30% albedo -- 12.6 sec chord
Dynamical classification is SCATNEAR

Star training set for 470308, (2028/07/12 05:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.7 -26:29:34  0.9 11.71 102
26Eps Sco      16:52:01.3 -34:20:31  2.3  8.49  97
43 Oph         17:25:09.5 -28:10:04  5.1  0.93  90
PPM 266819     17:26:11.6 -28:40:38  8.4  0.77  90
PPM 266694     17:21:51.3 -28:37:57  9.2  0.40  91
470308         17:22:54.2 -28:57:18 16.1        90
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 11.4 km RECON observability=0.4 and success probability=6.1%

Site Site mid-time
(UT) Sun alt
(deg) Sky Moon Star alt
(deg) Star az
(deg) Target Observing Time
(UT) X-track
(km)

Sleaford 05:49:31 -14.0 AT Up 8.3 190.5 Really Low 05:36:19 - 06:02:43 -552

Kamloops 05:50:17 -11.4 NT Down 10.4 177.9 Really Low 05:37:05 - 06:03:29 -609

Kelowna 05:50:14 -12.4 AT Down 11.2 178.6 Really Low 05:37:02 - 06:03:26 -620

Peachland 05:50:15 -12.4 AT Down 11.3 178.4 Really Low 05:37:03 - 06:03:27 -624

Summerland 05:50:14 -12.6 AT Down 11.5 178.5 Really Low 05:37:02 - 06:03:26 -627

Penticton 05:50:14 -12.7 AT Down 11.5 178.6 Really Low 05:37:02 - 06:03:26 -628

Oliver 05:50:14 -13.0 AT Down 11.9 178.6 Really Low 05:37:02 - 06:03:26 -636

Anarchist Mountain Observatory 05:50:13 -13.2 AT Down 12.1 178.7 Really Low 05:37:01 - 06:03:25 -638

Okanogan 05:50:14 -13.6 AT Down 12.7 178.5 Really Low 05:37:02 - 06:03:26 -656

Brewster 05:50:15 -13.8 AT Down 13.0 178.3 Really Low 05:37:03 - 06:03:27 -664

Manson/Chelan 05:50:16 -13.8 AT Down 13.2 178.0 Really Low 05:37:04 - 06:03:28 -671

Victoria 05:50:27 -12.1 AT Down 12.4 175.1 Really Low 05:37:15 - 06:03:39 -680

Wenatchee 05:50:17 -14.2 AT Down 13.6 177.9 Really Low 05:37:05 - 06:03:29 -685

Ellensburg 05:50:18 -14.5 AT Down 14.0 177.7 Really Low 05:37:06 - 06:03:30 -697

Yakima 05:50:18 -14.8 AT Down 14.4 177.6 Really Low 05:37:06 - 06:03:30 -709

Toppenish/White Swan 05:50:17 -15.0 AT Down 14.7 177.8 Really Low 05:37:05 - 06:03:29 -714

PNWRO 05:50:12 -15.9 AT Down 15.1 179.1 Really Low 05:37:00 - 06:03:24 -715

The Dalles 05:50:20 -15.4 AT Down 15.4 177.1 Really Low 05:37:08 - 06:03:32 -742

Maupin 05:50:20 -15.8 AT Down 15.8 177.2 Really Low 05:37:08 - 06:03:32 -754

Sisters 05:50:22 -16.3 AT Down 16.7 176.7 Really Low 05:37:10 - 06:03:34 -785

Bend 05:50:21 -16.6 AT Down 16.9 176.9 Really Low 05:37:09 - 06:03:33 -791

Oregon Observatory 05:50:21 -16.7 AT Down 17.1 176.8 Really Low 05:37:09 - 06:03:33 -797

Chiloquin 05:50:23 -17.6 AT Down 18.4 176.4 Really Low 05:37:11 - 06:03:35 -846

Klamath Falls 05:50:23 -17.9 AT Down 18.8 176.5 Really Low 05:37:11 - 06:03:35 -858

Cedarville 05:50:17 -19.2 Dark Down 19.5 177.9 Really Low 05:37:05 - 06:03:29 -870

Dunrhomin 05:49:18 -25.3 Dark Up 19.8 191.7 Really Low 05:36:06 - 06:02:30 -886

Nikitin 05:49:18 -25.5 Dark Up 20.0 191.7 Low 05:36:06 - 06:02:30 -893

CU-SBO 05:49:18 -25.5 Dark Up 20.1 191.6 Low 05:36:06 - 06:02:30 -896

Fall River/Burney 05:50:22 -19.1 Dark Down 20.0 176.8 Really Low 05:37:10 - 06:03:34 -899

Gimple 05:50:20 -20.1 Dark Down 20.9 177.3 Low 05:37:08 - 06:03:32 -930

Greenville 05:50:20 -20.0 Dark Down 20.9 177.2 Low 05:37:08 - 06:03:32 -930

Quincy 05:50:20 -20.2 Dark Down 21.1 177.2 Low 05:37:08 - 06:03:32 -938

Portola 05:50:18 -20.5 Dark Down 21.2 177.6 Low 05:37:06 - 06:03:30 -939

Reno 05:50:16 -21.0 Dark Down 21.5 178.2 Low 05:37:04 - 06:03:28 -945

Carson City 05:50:16 -21.3 Dark Down 21.9 178.3 Low 05:37:04 - 06:03:28 -960

Yerington 05:50:13 -21.7 Dark Down 22.1 178.8 Low 05:37:01 - 06:03:25 -964

Gardnerville 05:50:15 -21.5 Dark Down 22.1 178.3 Low 05:37:03 - 06:03:27 -970

Hawthorne 05:50:11 -22.3 Dark Down 22.5 179.3 Low 05:36:59 - 06:03:23 -980

Lee Vining 05:50:13 -22.6 Dark Down 23.1 178.9 Low 05:37:01 - 06:03:25 -1007

Bishop 05:50:10 -23.4 Dark Down 23.7 179.5 Low 05:36:58 - 06:03:22 -1029

Beatty 05:50:03 -24.5 Dark Up 24.2 181.1 Low 05:36:51 - 06:03:15 -1040

Patrick 05:49:51 -26.9 Dark Up 25.6 183.9 Low 05:36:39 - 06:03:03 -1097

Laughlin/Bullhead City 05:49:54 -26.9 Dark Up 25.8 183.2 Low 05:36:42 - 06:03:06 -1112

Lake Havasu City 05:49:52 -27.5 Dark Up 26.5 183.5 Low 05:36:40 - 06:03:04 -1144

George/Scottsdale 05:49:41 -29.2 Dark Up 27.1 185.8 Low 05:36:29 - 06:02:53 -1176

Wildwood 05:50:10 -26.1 Dark Down 27.0 179.3 Low 05:36:58 - 06:03:22 -1186

Idyllwild 05:50:02 -27.2 Dark Up 27.3 181.2 Low 05:36:50 - 06:03:14 -1191

Calipatria 05:49:57 -28.2 Dark Up 27.9 182.3 Low 05:36:45 - 06:03:09 -1218

Yuma 05:49:53 -29.0 Dark Up 28.3 183.2 Low 05:36:41 - 06:03:05 -1237

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 470308, (2028/07/12 05:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.71 102
26Eps Sco      16:50:08.8 -34:17:41  2.3  8.49  97
43 Oph         17:23:21.6 -28:08:35  5.1  0.93  90
PPM 266819     17:24:23.3 -28:39:12  8.4  0.77  90
PPM 266694     17:20:03.0 -28:36:20  9.2  0.40  91
470308         17:21:05.7 -28:55:43 16.1        90
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:33:04 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	05:49:31	-14.0	AT	Up	8.3	190.5	Really Low	05:36:19 - 06:02:43	-552
Kamloops	05:50:17	-11.4	NT	Down	10.4	177.9	Really Low	05:37:05 - 06:03:29	-609
Kelowna	05:50:14	-12.4	AT	Down	11.2	178.6	Really Low	05:37:02 - 06:03:26	-620
Peachland	05:50:15	-12.4	AT	Down	11.3	178.4	Really Low	05:37:03 - 06:03:27	-624
Summerland	05:50:14	-12.6	AT	Down	11.5	178.5	Really Low	05:37:02 - 06:03:26	-627
Penticton	05:50:14	-12.7	AT	Down	11.5	178.6	Really Low	05:37:02 - 06:03:26	-628
Oliver	05:50:14	-13.0	AT	Down	11.9	178.6	Really Low	05:37:02 - 06:03:26	-636
Anarchist Mountain Observatory	05:50:13	-13.2	AT	Down	12.1	178.7	Really Low	05:37:01 - 06:03:25	-638
Okanogan	05:50:14	-13.6	AT	Down	12.7	178.5	Really Low	05:37:02 - 06:03:26	-656
Brewster	05:50:15	-13.8	AT	Down	13.0	178.3	Really Low	05:37:03 - 06:03:27	-664
Manson/Chelan	05:50:16	-13.8	AT	Down	13.2	178.0	Really Low	05:37:04 - 06:03:28	-671
Victoria	05:50:27	-12.1	AT	Down	12.4	175.1	Really Low	05:37:15 - 06:03:39	-680
Wenatchee	05:50:17	-14.2	AT	Down	13.6	177.9	Really Low	05:37:05 - 06:03:29	-685
Ellensburg	05:50:18	-14.5	AT	Down	14.0	177.7	Really Low	05:37:06 - 06:03:30	-697
Yakima	05:50:18	-14.8	AT	Down	14.4	177.6	Really Low	05:37:06 - 06:03:30	-709
Toppenish/White Swan	05:50:17	-15.0	AT	Down	14.7	177.8	Really Low	05:37:05 - 06:03:29	-714
PNWRO	05:50:12	-15.9	AT	Down	15.1	179.1	Really Low	05:37:00 - 06:03:24	-715
The Dalles	05:50:20	-15.4	AT	Down	15.4	177.1	Really Low	05:37:08 - 06:03:32	-742
Maupin	05:50:20	-15.8	AT	Down	15.8	177.2	Really Low	05:37:08 - 06:03:32	-754
Sisters	05:50:22	-16.3	AT	Down	16.7	176.7	Really Low	05:37:10 - 06:03:34	-785
Bend	05:50:21	-16.6	AT	Down	16.9	176.9	Really Low	05:37:09 - 06:03:33	-791
Oregon Observatory	05:50:21	-16.7	AT	Down	17.1	176.8	Really Low	05:37:09 - 06:03:33	-797
Chiloquin	05:50:23	-17.6	AT	Down	18.4	176.4	Really Low	05:37:11 - 06:03:35	-846
Klamath Falls	05:50:23	-17.9	AT	Down	18.8	176.5	Really Low	05:37:11 - 06:03:35	-858
Cedarville	05:50:17	-19.2	Dark	Down	19.5	177.9	Really Low	05:37:05 - 06:03:29	-870
Dunrhomin	05:49:18	-25.3	Dark	Up	19.8	191.7	Really Low	05:36:06 - 06:02:30	-886
Nikitin	05:49:18	-25.5	Dark	Up	20.0	191.7	Low	05:36:06 - 06:02:30	-893
CU-SBO	05:49:18	-25.5	Dark	Up	20.1	191.6	Low	05:36:06 - 06:02:30	-896
Fall River/Burney	05:50:22	-19.1	Dark	Down	20.0	176.8	Really Low	05:37:10 - 06:03:34	-899
Gimple	05:50:20	-20.1	Dark	Down	20.9	177.3	Low	05:37:08 - 06:03:32	-930
Greenville	05:50:20	-20.0	Dark	Down	20.9	177.2	Low	05:37:08 - 06:03:32	-930
Quincy	05:50:20	-20.2	Dark	Down	21.1	177.2	Low	05:37:08 - 06:03:32	-938
Portola	05:50:18	-20.5	Dark	Down	21.2	177.6	Low	05:37:06 - 06:03:30	-939
Reno	05:50:16	-21.0	Dark	Down	21.5	178.2	Low	05:37:04 - 06:03:28	-945
Carson City	05:50:16	-21.3	Dark	Down	21.9	178.3	Low	05:37:04 - 06:03:28	-960
Yerington	05:50:13	-21.7	Dark	Down	22.1	178.8	Low	05:37:01 - 06:03:25	-964
Gardnerville	05:50:15	-21.5	Dark	Down	22.1	178.3	Low	05:37:03 - 06:03:27	-970
Hawthorne	05:50:11	-22.3	Dark	Down	22.5	179.3	Low	05:36:59 - 06:03:23	-980
Lee Vining	05:50:13	-22.6	Dark	Down	23.1	178.9	Low	05:37:01 - 06:03:25	-1007
Bishop	05:50:10	-23.4	Dark	Down	23.7	179.5	Low	05:36:58 - 06:03:22	-1029
Beatty	05:50:03	-24.5	Dark	Up	24.2	181.1	Low	05:36:51 - 06:03:15	-1040
Patrick	05:49:51	-26.9	Dark	Up	25.6	183.9	Low	05:36:39 - 06:03:03	-1097
Laughlin/Bullhead City	05:49:54	-26.9	Dark	Up	25.8	183.2	Low	05:36:42 - 06:03:06	-1112
Lake Havasu City	05:49:52	-27.5	Dark	Up	26.5	183.5	Low	05:36:40 - 06:03:04	-1144
George/Scottsdale	05:49:41	-29.2	Dark	Up	27.1	185.8	Low	05:36:29 - 06:02:53	-1176
Wildwood	05:50:10	-26.1	Dark	Down	27.0	179.3	Low	05:36:58 - 06:03:22	-1186
Idyllwild	05:50:02	-27.2	Dark	Up	27.3	181.2	Low	05:36:50 - 06:03:14	-1191
Calipatria	05:49:57	-28.2	Dark	Up	27.9	182.3	Low	05:36:45 - 06:03:09	-1218
Yuma	05:49:53	-29.0	Dark	Up	28.3	183.2	Low	05:36:41 - 06:03:05	-1237