RECON: TNO occultation with 01ES24

Event between 01ES24 and star GA0920:03638815 with event index number of 1934777

Geocentric closest approach at 2021/05/30 05:30:56 UTC

J2000 position of star is 12:08:29.0 +03:15:24
Equinox of date position of star is 12:09:34.6 +03:08:16
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=24.2

[RECON map]
TNO is 46.8 AU from the Sun and 46.4 AU from the Earth.
The TNO is moving 7.2 km/sec on the sky relative to the star, or, 0.8 arcsec/hr.
The 1-sigma error in the time of the event is 1445 seconds.
The 1-sigma cross-track error in the shadow position is 4546 km.
The sky-plane scale is 33680.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=202.3 km assuming a 5% albedo -- 28.1 sec chord
Diameter=82.6 km assuming a 30% albedo -- 11.5 sec chord
Dynamical classification is CLASSICAL

Star training set for 01ES24, (2021/05/30 05:31UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:19.4 -11:16:21  1.0 23.91  97
Denebola       11:50:09.0 +14:27:08  2.1 12.29 129
10 Vir         12:10:47.2 +01:46:40  5.9  1.39 119
PPM 158488     12:05:48.8 +03:27:14  7.8  0.99 121
PPM 158558     12:09:47.5 +02:59:24  9.3  0.16 120
01ES24         12:09:34.8 +03:08:16 16.2       120
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 0.6 sigma about the mid-time.
The median site spacing is 19.2 km RECON observability=0.7 and success probability=2.8%

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

Clarence Fulton 05:28:15 -11.0 NT Down 37.2 216.8 Up 05:13:15 - 05:43:15 8179

Kelowna 05:28:12 -11.3 NT Down 37.6 216.8 Up 05:13:12 - 05:43:12 8151

Peachland 05:28:12 -11.2 NT Down 37.8 216.5 Up 05:13:12 - 05:43:12 8140

Summerland 05:28:08 -11.4 NT Down 37.8 216.7 Up 05:13:08 - 05:43:08 8131

Penticton 05:28:08 -11.5 NT Down 37.9 216.8 Up 05:13:08 - 05:43:08 8127

Oliver 05:28:08 -11.8 NT Down 38.1 217.0 Up 05:13:08 - 05:43:08 8103

Anarchist Mountain Observatory 05:28:05 -12.0 NT Down 38.2 217.3 Up 05:13:05 - 05:43:05 8094

Tonasket 05:28:01 -12.2 AT Down 38.5 217.4 Up 05:13:01 - 05:43:01 8071

Okanogan 05:28:01 -12.4 AT Down 38.8 217.3 Up 05:13:01 - 05:43:01 8046

Brewster 05:28:01 -12.6 AT Down 39.1 217.2 Up 05:13:01 - 05:43:01 8024

Victoria 05:28:36 -10.9 NT Down 40.1 212.9 Up 05:13:36 - 05:43:36 8008

Manson/Chelan 05:28:03 -12.6 AT Down 39.4 216.9 Up 05:13:03 - 05:43:03 8004

Wenatchee 05:28:05 -12.9 AT Down 39.9 217.0 Up 05:13:05 - 05:43:05 7968

Ellensburg 05:27:58 -13.2 AT Down 40.3 216.9 Up 05:12:58 - 05:42:58 7936

Yakima 05:27:58 -13.5 AT Down 40.6 217.1 Up 05:12:58 - 05:42:58 7906

Pasco 05:27:42 -14.3 AT Down 40.3 218.9 Up 05:12:42 - 05:42:42 7900

Toppenish/White Swan 05:27:58 -13.7 AT Down 40.7 217.4 Up 05:12:58 - 05:42:58 7892

PNWRO 05:27:37 -14.6 AT Down 40.4 219.2 Up 05:12:37 - 05:42:37 7885

Goldendale 05:27:54 -14.0 AT Down 41.4 217.1 Up 05:12:54 - 05:42:54 7846

The Dalles 05:27:58 -14.0 AT Down 41.7 216.8 Up 05:12:58 - 05:42:58 7824

Maupin 05:27:53 -14.4 AT Down 42.0 217.2 Up 05:12:53 - 05:42:53 7794

Redmond 05:27:47 -15.1 AT Down 42.8 217.5 Up 05:12:47 - 05:42:47 7724

Sisters 05:27:52 -14.9 AT Down 42.9 217.0 Up 05:12:52 - 05:42:52 7721

Bend 05:27:47 -15.2 AT Down 43.0 217.5 Up 05:12:47 - 05:42:47 7706

Oregon Observatory 05:27:48 -15.3 AT Down 43.2 217.4 Up 05:12:48 - 05:42:48 7691

La Pine/Gilchrist 05:27:51 -15.4 AT Down 43.4 217.5 Up 05:12:51 - 05:42:51 7675

North Lake 05:27:38 -16.0 AT Down 43.5 218.4 Up 05:12:38 - 05:42:38 7649

Dunrhomin 05:24:55 -24.3 Dark Down 37.1 236.8 Up 05:09:55 - 05:39:55 7630

Paisley 05:27:31 -16.6 AT Down 43.7 219.1 Up 05:12:31 - 05:42:31 7611

Chiloquin 05:27:42 -16.1 AT Down 44.4 217.6 Up 05:12:42 - 05:42:42 7583

Lakeview 05:27:24 -17.1 AT Down 44.1 219.6 Up 05:12:24 - 05:42:24 7574

Klamath Falls 05:27:44 -16.4 AT Down 44.6 217.9 Up 05:12:44 - 05:42:44 7557

Cedarville 05:27:23 -17.7 AT Down 44.5 220.3 Up 05:12:23 - 05:42:23 7524

Fall River/Burney 05:27:30 -17.5 AT Down 45.4 219.1 Up 05:12:30 - 05:42:30 7467

Susanville 05:27:21 -18.3 Dark Down 45.6 220.4 Up 05:12:21 - 05:42:21 7427

Gimple 05:27:19 -18.5 Dark Down 45.9 220.3 Up 05:12:19 - 05:42:19 7401

Greenville 05:27:23 -18.4 Dark Down 45.9 220.2 Up 05:12:23 - 05:42:23 7400

Quincy 05:27:19 -18.6 Dark Down 46.1 220.3 Up 05:12:19 - 05:42:19 7383

Portola 05:27:11 -18.9 Dark Down 45.9 221.0 Up 05:12:11 - 05:42:11 7380

Reno 05:27:07 -19.4 Dark Down 45.8 221.9 Up 05:12:07 - 05:42:07 7368

Carson City 05:27:02 -19.7 Dark Down 46.1 222.2 Up 05:12:02 - 05:42:02 7338

Yerington 05:26:55 -20.1 Dark Down 45.9 223.0 Up 05:11:55 - 05:41:55 7331

Gardnerville 05:26:59 -19.9 Dark Down 46.3 222.4 Up 05:11:59 - 05:41:59 7319

Hawthorne 05:26:45 -20.7 Dark Down 46.0 224.0 Up 05:11:45 - 05:41:45 7300

Tonopah 05:26:30 -21.7 Dark Down 45.6 225.9 Up 05:11:30 - 05:41:30 7282

Lee Vining 05:26:48 -21.0 Dark Down 46.7 223.8 Up 05:11:48 - 05:41:48 7246

Bishop 05:26:40 -21.8 Dark Down 46.7 225.1 Up 05:11:40 - 05:41:40 7206

Beatty 05:26:17 -22.9 Dark Down 46.1 227.3 Up 05:11:17 - 05:41:17 7191

Indian Springs 05:26:04 -23.6 Dark Down 45.7 228.7 Up 05:11:04 - 05:41:04 7179

Henderson 05:25:56 -24.3 Dark Down 45.7 229.9 Up 05:10:56 - 05:40:56 7143

Patrick 05:25:37 -25.3 Dark Down 45.4 231.5 Up 05:10:37 - 05:40:37 7106

Kingman/Dolan Springs 05:25:39 -25.4 Dark Down 45.7 231.5 Up 05:10:39 - 05:40:39 7084

Laughlin/Bullhead City 05:25:45 -25.2 Dark Down 46.0 231.0 Up 05:10:45 - 05:40:45 7074

Mohave Valley 05:25:41 -25.4 Dark Down 46.2 231.2 Up 05:10:41 - 05:40:41 7050

Lake Havasu City 05:25:38 -25.9 Dark Down 46.3 231.7 Up 05:10:38 - 05:40:38 7019

CPSLO 05:26:48 -22.3 Dark Down 49.4 223.9 Up 05:11:48 - 05:41:48 6993

Parker 05:25:37 -26.2 Dark Down 46.5 232.1 Up 05:10:37 - 05:40:37 6989

George/Scottsdale 05:25:07 -27.6 Dark Down 45.2 234.9 Up 05:10:07 - 05:40:07 6988

Blythe 05:25:33 -26.5 Dark Down 47.0 232.2 Up 05:10:33 - 05:40:33 6938

Wildwood 05:26:18 -24.2 Dark Down 49.1 227.3 Up 05:11:18 - 05:41:18 6918

Idyllwild 05:25:56 -25.4 Dark Down 48.3 229.8 Up 05:10:56 - 05:40:56 6916

Calipatria 05:25:44 -26.5 Dark Down 47.9 231.6 Up 05:10:44 - 05:40:44 6879

Yuma 05:25:28 -27.2 Dark Down 47.6 232.9 Up 05:10:28 - 05:40:28 6855

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 01ES24, (2021/05/30 05:31UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 23.91  97
Denebola       11:49:02.9 +14:34:17  2.1 12.29 129
10 Vir         12:09:41.4 +01:53:49  5.9  1.39 119
PPM 158488     12:04:43.0 +03:34:23  7.8  0.99 121
PPM 158558     12:08:41.7 +03:06:33  9.3  0.16 120
01ES24         12:08:29.0 +03:15:24 16.2       120
Positions are for J2000

Event circumstances last updated at 2021/05/17 01:02:11 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)
Clarence Fulton	05:28:15	-11.0	NT	Down	37.2	216.8	Up	05:13:15 - 05:43:15	8179
Kelowna	05:28:12	-11.3	NT	Down	37.6	216.8	Up	05:13:12 - 05:43:12	8151
Peachland	05:28:12	-11.2	NT	Down	37.8	216.5	Up	05:13:12 - 05:43:12	8140
Summerland	05:28:08	-11.4	NT	Down	37.8	216.7	Up	05:13:08 - 05:43:08	8131
Penticton	05:28:08	-11.5	NT	Down	37.9	216.8	Up	05:13:08 - 05:43:08	8127
Oliver	05:28:08	-11.8	NT	Down	38.1	217.0	Up	05:13:08 - 05:43:08	8103
Anarchist Mountain Observatory	05:28:05	-12.0	NT	Down	38.2	217.3	Up	05:13:05 - 05:43:05	8094
Tonasket	05:28:01	-12.2	AT	Down	38.5	217.4	Up	05:13:01 - 05:43:01	8071
Okanogan	05:28:01	-12.4	AT	Down	38.8	217.3	Up	05:13:01 - 05:43:01	8046
Brewster	05:28:01	-12.6	AT	Down	39.1	217.2	Up	05:13:01 - 05:43:01	8024
Victoria	05:28:36	-10.9	NT	Down	40.1	212.9	Up	05:13:36 - 05:43:36	8008
Manson/Chelan	05:28:03	-12.6	AT	Down	39.4	216.9	Up	05:13:03 - 05:43:03	8004
Wenatchee	05:28:05	-12.9	AT	Down	39.9	217.0	Up	05:13:05 - 05:43:05	7968
Ellensburg	05:27:58	-13.2	AT	Down	40.3	216.9	Up	05:12:58 - 05:42:58	7936
Yakima	05:27:58	-13.5	AT	Down	40.6	217.1	Up	05:12:58 - 05:42:58	7906
Pasco	05:27:42	-14.3	AT	Down	40.3	218.9	Up	05:12:42 - 05:42:42	7900
Toppenish/White Swan	05:27:58	-13.7	AT	Down	40.7	217.4	Up	05:12:58 - 05:42:58	7892
PNWRO	05:27:37	-14.6	AT	Down	40.4	219.2	Up	05:12:37 - 05:42:37	7885
Goldendale	05:27:54	-14.0	AT	Down	41.4	217.1	Up	05:12:54 - 05:42:54	7846
The Dalles	05:27:58	-14.0	AT	Down	41.7	216.8	Up	05:12:58 - 05:42:58	7824
Maupin	05:27:53	-14.4	AT	Down	42.0	217.2	Up	05:12:53 - 05:42:53	7794
Redmond	05:27:47	-15.1	AT	Down	42.8	217.5	Up	05:12:47 - 05:42:47	7724
Sisters	05:27:52	-14.9	AT	Down	42.9	217.0	Up	05:12:52 - 05:42:52	7721
Bend	05:27:47	-15.2	AT	Down	43.0	217.5	Up	05:12:47 - 05:42:47	7706
Oregon Observatory	05:27:48	-15.3	AT	Down	43.2	217.4	Up	05:12:48 - 05:42:48	7691
La Pine/Gilchrist	05:27:51	-15.4	AT	Down	43.4	217.5	Up	05:12:51 - 05:42:51	7675
North Lake	05:27:38	-16.0	AT	Down	43.5	218.4	Up	05:12:38 - 05:42:38	7649
Dunrhomin	05:24:55	-24.3	Dark	Down	37.1	236.8	Up	05:09:55 - 05:39:55	7630
Paisley	05:27:31	-16.6	AT	Down	43.7	219.1	Up	05:12:31 - 05:42:31	7611
Chiloquin	05:27:42	-16.1	AT	Down	44.4	217.6	Up	05:12:42 - 05:42:42	7583
Lakeview	05:27:24	-17.1	AT	Down	44.1	219.6	Up	05:12:24 - 05:42:24	7574
Klamath Falls	05:27:44	-16.4	AT	Down	44.6	217.9	Up	05:12:44 - 05:42:44	7557
Cedarville	05:27:23	-17.7	AT	Down	44.5	220.3	Up	05:12:23 - 05:42:23	7524
Fall River/Burney	05:27:30	-17.5	AT	Down	45.4	219.1	Up	05:12:30 - 05:42:30	7467
Susanville	05:27:21	-18.3	Dark	Down	45.6	220.4	Up	05:12:21 - 05:42:21	7427
Gimple	05:27:19	-18.5	Dark	Down	45.9	220.3	Up	05:12:19 - 05:42:19	7401
Greenville	05:27:23	-18.4	Dark	Down	45.9	220.2	Up	05:12:23 - 05:42:23	7400
Quincy	05:27:19	-18.6	Dark	Down	46.1	220.3	Up	05:12:19 - 05:42:19	7383
Portola	05:27:11	-18.9	Dark	Down	45.9	221.0	Up	05:12:11 - 05:42:11	7380
Reno	05:27:07	-19.4	Dark	Down	45.8	221.9	Up	05:12:07 - 05:42:07	7368
Carson City	05:27:02	-19.7	Dark	Down	46.1	222.2	Up	05:12:02 - 05:42:02	7338
Yerington	05:26:55	-20.1	Dark	Down	45.9	223.0	Up	05:11:55 - 05:41:55	7331
Gardnerville	05:26:59	-19.9	Dark	Down	46.3	222.4	Up	05:11:59 - 05:41:59	7319
Hawthorne	05:26:45	-20.7	Dark	Down	46.0	224.0	Up	05:11:45 - 05:41:45	7300
Tonopah	05:26:30	-21.7	Dark	Down	45.6	225.9	Up	05:11:30 - 05:41:30	7282
Lee Vining	05:26:48	-21.0	Dark	Down	46.7	223.8	Up	05:11:48 - 05:41:48	7246
Bishop	05:26:40	-21.8	Dark	Down	46.7	225.1	Up	05:11:40 - 05:41:40	7206
Beatty	05:26:17	-22.9	Dark	Down	46.1	227.3	Up	05:11:17 - 05:41:17	7191
Indian Springs	05:26:04	-23.6	Dark	Down	45.7	228.7	Up	05:11:04 - 05:41:04	7179
Henderson	05:25:56	-24.3	Dark	Down	45.7	229.9	Up	05:10:56 - 05:40:56	7143
Patrick	05:25:37	-25.3	Dark	Down	45.4	231.5	Up	05:10:37 - 05:40:37	7106
Kingman/Dolan Springs	05:25:39	-25.4	Dark	Down	45.7	231.5	Up	05:10:39 - 05:40:39	7084
Laughlin/Bullhead City	05:25:45	-25.2	Dark	Down	46.0	231.0	Up	05:10:45 - 05:40:45	7074
Mohave Valley	05:25:41	-25.4	Dark	Down	46.2	231.2	Up	05:10:41 - 05:40:41	7050
Lake Havasu City	05:25:38	-25.9	Dark	Down	46.3	231.7	Up	05:10:38 - 05:40:38	7019
CPSLO	05:26:48	-22.3	Dark	Down	49.4	223.9	Up	05:11:48 - 05:41:48	6993
Parker	05:25:37	-26.2	Dark	Down	46.5	232.1	Up	05:10:37 - 05:40:37	6989
George/Scottsdale	05:25:07	-27.6	Dark	Down	45.2	234.9	Up	05:10:07 - 05:40:07	6988
Blythe	05:25:33	-26.5	Dark	Down	47.0	232.2	Up	05:10:33 - 05:40:33	6938
Wildwood	05:26:18	-24.2	Dark	Down	49.1	227.3	Up	05:11:18 - 05:41:18	6918
Idyllwild	05:25:56	-25.4	Dark	Down	48.3	229.8	Up	05:10:56 - 05:40:56	6916
Calipatria	05:25:44	-26.5	Dark	Down	47.9	231.6	Up	05:10:44 - 05:40:44	6879
Yuma	05:25:28	-27.2	Dark	Down	47.6	232.9	Up	05:10:28 - 05:40:28	6855