RECON: TNO occultation with 03LD9

Event between 03LD9 and star GA0700:22415930 with event index number of 1662785

Geocentric closest approach at 2022/07/22 06:21:11 UTC

J2000 position of star is 18:20:26.6 -18:57:24
Equinox of date position of star is 18:21:45.0 -18:56:43
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 134 degrees from the moon. Moon is 34% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 43.1 AU from the Sun and 42.2 AU from the Earth.
The TNO is moving 22.0 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 630 seconds.
The 1-sigma cross-track error in the shadow position is 3908 km.
The sky-plane scale is 30572.1 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=295.1 km assuming a 5% albedo -- 13.4 sec chord
Diameter=120.5 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is SCATNEAR

Star training set for 03LD9, (2022/07/22 06:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.6 -26:28:48  0.9 26.62 158
Nunki          18:56:39.7 -26:16:00  2.0 10.88 126
PPM 234421     18:22:42.6 -18:50:53  5.9  0.24 133
PPM 234338     18:20:03.7 -18:36:22  8.1  0.53 134
PPM 234421     18:22:42.6 -18:50:53  5.9  0.24 133
03LD9          18:21:46.3 -18:56:42 16.4       133
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 1.4 sigma about the mid-time.
The median site spacing is 14.5 km RECON observability=1.0 and success probability=0.7%

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

Kamloops 06:20:57 -15.2 AT Down 20.4 179.8 Low 06:05:57 - 06:35:57 12591

Kelowna 06:20:54 -16.2 AT Down 21.2 180.7 Low 06:05:54 - 06:35:54 12555

Peachland 06:20:55 -16.2 AT Down 21.3 180.4 Low 06:05:55 - 06:35:55 12552

Sleaford 06:20:13 -16.8 AT Down 17.9 193.9 Really Low 06:05:13 - 06:35:13 12550

Summerland 06:20:55 -16.4 AT Down 21.4 180.4 Low 06:05:55 - 06:35:55 12546

Penticton 06:20:55 -16.5 AT Down 21.5 180.6 Low 06:05:55 - 06:35:55 12542

Oliver 06:20:54 -16.8 AT Down 21.9 180.6 Low 06:05:54 - 06:35:54 12528

Anarchist Mountain Observatory 06:20:54 -17.0 AT Down 22.0 180.8 Low 06:05:54 - 06:35:54 12520

Victoria 06:21:07 -16.3 AT Down 22.5 176.7 Low 06:06:07 - 06:36:07 12514

Tonasket 06:20:54 -17.3 AT Down 22.3 180.7 Low 06:05:54 - 06:35:54 12507

Okanogan 06:20:54 -17.5 AT Down 22.7 180.5 Low 06:05:54 - 06:35:54 12493

Brewster 06:20:55 -17.7 AT Down 22.9 180.3 Low 06:05:55 - 06:35:55 12483

Manson/Chelan 06:20:57 -17.8 AT Down 23.2 180.0 Low 06:05:57 - 06:35:57 12475

Wenatchee 06:20:57 -18.2 Dark Down 23.6 179.8 Low 06:05:57 - 06:35:57 12455

Ellensburg 06:20:58 -18.5 Dark Down 24.0 179.6 Low 06:05:58 - 06:35:58 12438

Yakima 06:20:58 -18.9 Dark Down 24.5 179.5 Low 06:05:58 - 06:35:58 12419

Toppenish/White Swan 06:20:58 -19.1 Dark Down 24.7 179.7 Low 06:05:58 - 06:35:58 12408

Goldendale 06:20:59 -19.5 Dark Down 25.2 179.3 Low 06:05:59 - 06:35:59 12384

PNWRO 06:20:53 -19.9 Dark Down 25.0 181.3 Low 06:05:53 - 06:35:53 12384

The Dalles 06:21:00 -19.5 Dark Down 25.4 178.9 Low 06:06:00 - 06:36:00 12375

Maupin 06:21:01 -19.9 Dark Down 25.9 179.0 Low 06:06:01 - 06:36:01 12355

Sisters 06:21:02 -20.6 Dark Down 26.7 178.5 Low 06:06:02 - 06:36:02 12314

Bend 06:21:02 -20.9 Dark Down 27.0 178.8 Low 06:06:02 - 06:36:02 12301

Oregon Observatory 06:21:02 -21.0 Dark Down 27.1 178.6 Low 06:06:02 - 06:36:02 12293

North Lake 06:20:59 -21.7 Dark Down 27.8 179.2 Low 06:05:59 - 06:35:59 12258

Chiloquin 06:21:04 -22.0 Dark Down 28.5 178.2 Low 06:06:04 - 06:36:04 12227

Klamath Falls 06:21:04 -22.3 Dark Down 28.8 178.2 Low 06:06:04 - 06:36:04 12208

Lakeview 06:20:57 -22.8 Dark Down 28.9 179.8 Low 06:05:57 - 06:35:57 12200

Cedarville 06:20:57 -23.5 Dark Down 29.5 179.9 Low 06:05:57 - 06:35:57 12164

Fall River/Burney 06:21:02 -23.5 Dark Down 30.0 178.6 Low 06:06:02 - 06:36:02 12142

Susanville 06:21:00 -24.3 Dark Down 30.6 179.4 Up 06:06:00 - 06:36:00 12104

Greenville 06:21:00 -24.4 Dark Down 30.9 179.1 Up 06:06:00 - 06:36:00 12090

Gimple 06:21:00 -24.5 Dark Down 30.9 179.2 Up 06:06:00 - 06:36:00 12089

Quincy 06:21:00 -24.6 Dark Down 31.1 179.1 Up 06:06:00 - 06:36:00 12078

Portola 06:20:59 -24.9 Dark Down 31.2 179.6 Up 06:05:59 - 06:35:59 12069

Reno 06:20:57 -25.4 Dark Down 31.5 180.3 Up 06:05:57 - 06:35:57 12050

Carson City 06:20:57 -25.7 Dark Down 31.9 180.4 Up 06:05:57 - 06:35:57 12029

Gardnerville 06:20:56 -25.9 Dark Down 32.1 180.4 Up 06:05:56 - 06:35:56 12015

Yerington 06:20:54 -26.1 Dark Down 32.0 181.1 Up 06:05:54 - 06:35:54 12014

Hawthorne 06:20:52 -26.7 Dark Down 32.5 181.6 Up 06:05:52 - 06:35:52 11984

Dunrhomin 06:20:02 -28.5 Dark Down 29.2 196.0 Low 06:05:02 - 06:35:02 11969

CU-SBO 06:20:02 -28.7 Dark Down 29.5 195.9 Low 06:05:02 - 06:35:02 11956

Lee Vining 06:20:55 -27.0 Dark Down 33.1 181.1 Up 06:05:55 - 06:35:55 11953

Tonopah 06:20:47 -27.6 Dark Down 32.9 183.2 Up 06:05:47 - 06:35:47 11948

Bishop 06:20:52 -27.8 Dark Down 33.7 181.9 Up 06:05:52 - 06:35:52 11912

Beatty 06:20:45 -28.8 Dark Down 34.1 183.8 Up 06:05:45 - 06:35:45 11873

Indian Springs 06:20:40 -29.4 Dark Down 34.3 185.0 Up 06:05:40 - 06:35:40 11845

Henderson 06:20:39 -30.2 Dark Down 34.8 185.8 Up 06:05:39 - 06:35:39 11805

Patrick 06:20:34 -31.1 Dark Down 35.3 187.1 Up 06:05:34 - 06:35:34 11756

Laughlin/Bullhead City 06:20:36 -31.1 Dark Down 35.6 186.4 Up 06:05:36 - 06:35:36 11745

Kingman/Dolan Springs 06:20:34 -31.2 Dark Down 35.6 186.9 Up 06:05:34 - 06:35:34 11743

Mohave Valley 06:20:36 -31.3 Dark Down 35.9 186.4 Up 06:05:36 - 06:35:36 11728

Wildwood 06:20:52 -30.7 Dark Down 36.9 181.8 Up 06:05:52 - 06:35:52 11703

Lake Havasu City 06:20:35 -31.8 Dark Down 36.3 186.7 Up 06:05:35 - 06:35:35 11699

Parker 06:20:36 -32.1 Dark Down 36.6 186.8 Up 06:05:36 - 06:35:36 11675

Idyllwild 06:20:45 -31.7 Dark Down 37.2 184.0 Up 06:05:45 - 06:35:45 11667

George/Scottsdale 06:20:26 -33.3 Dark Down 36.8 189.6 Up 06:05:26 - 06:35:26 11626

Calipatria 06:20:41 -32.6 Dark Down 37.7 185.4 Up 06:05:41 - 06:35:41 11616

Yuma 06:20:37 -33.3 Dark Down 38.1 186.5 Up 06:05:37 - 06:35:37 11579

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 03LD9, (2022/07/22 06:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.62 158
Nunki          18:55:15.9 -26:17:49  2.0 10.88 126
PPM 234421     18:21:23.0 -18:51:36  5.9  0.24 133
PPM 234338     18:18:44.2 -18:37:00  8.1  0.53 134
PPM 234421     18:21:23.0 -18:51:36  5.9  0.24 133
03LD9          18:20:26.6 -18:57:24 16.4       134
Positions are for J2000

Event circumstances last updated at 2022/03/13 02:15:19 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	06:20:57	-15.2	AT	Down	20.4	179.8	Low	06:05:57 - 06:35:57	12591
Kelowna	06:20:54	-16.2	AT	Down	21.2	180.7	Low	06:05:54 - 06:35:54	12555
Peachland	06:20:55	-16.2	AT	Down	21.3	180.4	Low	06:05:55 - 06:35:55	12552
Sleaford	06:20:13	-16.8	AT	Down	17.9	193.9	Really Low	06:05:13 - 06:35:13	12550
Summerland	06:20:55	-16.4	AT	Down	21.4	180.4	Low	06:05:55 - 06:35:55	12546
Penticton	06:20:55	-16.5	AT	Down	21.5	180.6	Low	06:05:55 - 06:35:55	12542
Oliver	06:20:54	-16.8	AT	Down	21.9	180.6	Low	06:05:54 - 06:35:54	12528
Anarchist Mountain Observatory	06:20:54	-17.0	AT	Down	22.0	180.8	Low	06:05:54 - 06:35:54	12520
Victoria	06:21:07	-16.3	AT	Down	22.5	176.7	Low	06:06:07 - 06:36:07	12514
Tonasket	06:20:54	-17.3	AT	Down	22.3	180.7	Low	06:05:54 - 06:35:54	12507
Okanogan	06:20:54	-17.5	AT	Down	22.7	180.5	Low	06:05:54 - 06:35:54	12493
Brewster	06:20:55	-17.7	AT	Down	22.9	180.3	Low	06:05:55 - 06:35:55	12483
Manson/Chelan	06:20:57	-17.8	AT	Down	23.2	180.0	Low	06:05:57 - 06:35:57	12475
Wenatchee	06:20:57	-18.2	Dark	Down	23.6	179.8	Low	06:05:57 - 06:35:57	12455
Ellensburg	06:20:58	-18.5	Dark	Down	24.0	179.6	Low	06:05:58 - 06:35:58	12438
Yakima	06:20:58	-18.9	Dark	Down	24.5	179.5	Low	06:05:58 - 06:35:58	12419
Toppenish/White Swan	06:20:58	-19.1	Dark	Down	24.7	179.7	Low	06:05:58 - 06:35:58	12408
Goldendale	06:20:59	-19.5	Dark	Down	25.2	179.3	Low	06:05:59 - 06:35:59	12384
PNWRO	06:20:53	-19.9	Dark	Down	25.0	181.3	Low	06:05:53 - 06:35:53	12384
The Dalles	06:21:00	-19.5	Dark	Down	25.4	178.9	Low	06:06:00 - 06:36:00	12375
Maupin	06:21:01	-19.9	Dark	Down	25.9	179.0	Low	06:06:01 - 06:36:01	12355
Sisters	06:21:02	-20.6	Dark	Down	26.7	178.5	Low	06:06:02 - 06:36:02	12314
Bend	06:21:02	-20.9	Dark	Down	27.0	178.8	Low	06:06:02 - 06:36:02	12301
Oregon Observatory	06:21:02	-21.0	Dark	Down	27.1	178.6	Low	06:06:02 - 06:36:02	12293
North Lake	06:20:59	-21.7	Dark	Down	27.8	179.2	Low	06:05:59 - 06:35:59	12258
Chiloquin	06:21:04	-22.0	Dark	Down	28.5	178.2	Low	06:06:04 - 06:36:04	12227
Klamath Falls	06:21:04	-22.3	Dark	Down	28.8	178.2	Low	06:06:04 - 06:36:04	12208
Lakeview	06:20:57	-22.8	Dark	Down	28.9	179.8	Low	06:05:57 - 06:35:57	12200
Cedarville	06:20:57	-23.5	Dark	Down	29.5	179.9	Low	06:05:57 - 06:35:57	12164
Fall River/Burney	06:21:02	-23.5	Dark	Down	30.0	178.6	Low	06:06:02 - 06:36:02	12142
Susanville	06:21:00	-24.3	Dark	Down	30.6	179.4	Up	06:06:00 - 06:36:00	12104
Greenville	06:21:00	-24.4	Dark	Down	30.9	179.1	Up	06:06:00 - 06:36:00	12090
Gimple	06:21:00	-24.5	Dark	Down	30.9	179.2	Up	06:06:00 - 06:36:00	12089
Quincy	06:21:00	-24.6	Dark	Down	31.1	179.1	Up	06:06:00 - 06:36:00	12078
Portola	06:20:59	-24.9	Dark	Down	31.2	179.6	Up	06:05:59 - 06:35:59	12069
Reno	06:20:57	-25.4	Dark	Down	31.5	180.3	Up	06:05:57 - 06:35:57	12050
Carson City	06:20:57	-25.7	Dark	Down	31.9	180.4	Up	06:05:57 - 06:35:57	12029
Gardnerville	06:20:56	-25.9	Dark	Down	32.1	180.4	Up	06:05:56 - 06:35:56	12015
Yerington	06:20:54	-26.1	Dark	Down	32.0	181.1	Up	06:05:54 - 06:35:54	12014
Hawthorne	06:20:52	-26.7	Dark	Down	32.5	181.6	Up	06:05:52 - 06:35:52	11984
Dunrhomin	06:20:02	-28.5	Dark	Down	29.2	196.0	Low	06:05:02 - 06:35:02	11969
CU-SBO	06:20:02	-28.7	Dark	Down	29.5	195.9	Low	06:05:02 - 06:35:02	11956
Lee Vining	06:20:55	-27.0	Dark	Down	33.1	181.1	Up	06:05:55 - 06:35:55	11953
Tonopah	06:20:47	-27.6	Dark	Down	32.9	183.2	Up	06:05:47 - 06:35:47	11948
Bishop	06:20:52	-27.8	Dark	Down	33.7	181.9	Up	06:05:52 - 06:35:52	11912
Beatty	06:20:45	-28.8	Dark	Down	34.1	183.8	Up	06:05:45 - 06:35:45	11873
Indian Springs	06:20:40	-29.4	Dark	Down	34.3	185.0	Up	06:05:40 - 06:35:40	11845
Henderson	06:20:39	-30.2	Dark	Down	34.8	185.8	Up	06:05:39 - 06:35:39	11805
Patrick	06:20:34	-31.1	Dark	Down	35.3	187.1	Up	06:05:34 - 06:35:34	11756
Laughlin/Bullhead City	06:20:36	-31.1	Dark	Down	35.6	186.4	Up	06:05:36 - 06:35:36	11745
Kingman/Dolan Springs	06:20:34	-31.2	Dark	Down	35.6	186.9	Up	06:05:34 - 06:35:34	11743
Mohave Valley	06:20:36	-31.3	Dark	Down	35.9	186.4	Up	06:05:36 - 06:35:36	11728
Wildwood	06:20:52	-30.7	Dark	Down	36.9	181.8	Up	06:05:52 - 06:35:52	11703
Lake Havasu City	06:20:35	-31.8	Dark	Down	36.3	186.7	Up	06:05:35 - 06:35:35	11699
Parker	06:20:36	-32.1	Dark	Down	36.6	186.8	Up	06:05:36 - 06:35:36	11675
Idyllwild	06:20:45	-31.7	Dark	Down	37.2	184.0	Up	06:05:45 - 06:35:45	11667
George/Scottsdale	06:20:26	-33.3	Dark	Down	36.8	189.6	Up	06:05:26 - 06:35:26	11626
Calipatria	06:20:41	-32.6	Dark	Down	37.7	185.4	Up	06:05:41 - 06:35:41	11616
Yuma	06:20:37	-33.3	Dark	Down	38.1	186.5	Up	06:05:37 - 06:35:37	11579