RECON: TNO occultation with 00YX1

Event between 00YX1 and star GA1140:01814336 with event index number of 1781529

Geocentric closest approach at 2027/12/19 05:51:22 UTC

J2000 position of star is 06:04:47.4 +25:28:05
Equinox of date position of star is 06:06:04.1 +25:27:55
Stellar brightness G=15.9, use SENSEUP=128
Star is 71 degrees from the moon. Moon is 63% illuminated.
TNO apparent brightness V=26.3

[RECON map]
TNO is 43.4 AU from the Sun and 42.4 AU from the Earth.
The TNO is moving 25.6 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 931 seconds.
The 1-sigma cross-track error in the shadow position is 4211 km.
The sky-plane scale is 30777.6 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=212.8 km assuming a 5% albedo -- 2.4 sec chord
Diameter=86.9 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CLASSICAL

Star training set for 00YX1, (2027/12/19 05:51UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:41.2 +07:24:35  0.4 18.21  73
Alnath         05:28:03.7 +28:37:43  1.6  9.13  80
139 Tau        05:59:43.8 +25:57:17  4.7  1.61  73
PPM 095328     06:05:55.8 +25:26:25  8.2  0.14  71
PPM 095349     06:06:44.6 +25:21:29 11.2  0.12  71
00YX1          06:06:31.2 +25:27:51 15.9        71
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 1.0 sigma about the mid-time.
The median site spacing is 24.3 km RECON observability=1.0 and success probability=3.1%

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 05:52:58 -54.3 Dark Down 53.7 120.0 Up 05:37:58 - 06:07:58 10966

Kelowna 05:52:59 -54.5 Dark Down 53.8 119.3 Up 05:37:59 - 06:07:59 10931

Peachland 05:53:00 -54.4 Dark Down 53.7 118.8 Up 05:38:00 - 06:08:00 10925

Summerland 05:53:00 -54.5 Dark Down 53.8 118.8 Up 05:38:00 - 06:08:00 10909

Penticton 05:52:59 -54.6 Dark Down 53.9 118.8 Up 05:37:59 - 06:07:59 10901

Victoria 05:53:11 -53.1 Dark Down 52.1 113.3 Up 05:38:11 - 06:08:11 10870

Oliver 05:53:00 -54.8 Dark Down 54.0 118.4 Up 05:38:00 - 06:08:00 10867

Anarchist Mountain Observatory 05:53:00 -55.0 Dark Down 54.2 118.4 Up 05:38:00 - 06:08:00 10847

Tonasket 05:53:01 -55.2 Dark Down 54.3 118.0 Up 05:38:01 - 06:08:01 10819

Okanogan 05:53:02 -55.3 Dark Down 54.4 117.4 Up 05:38:02 - 06:08:02 10788

Brewster 05:53:03 -55.3 Dark Down 54.4 116.8 Up 05:38:03 - 06:08:03 10765

Manson/Chelan 05:53:04 -55.3 Dark Down 54.3 116.1 Up 05:38:04 - 06:08:04 10751

Entiat 05:53:05 -55.3 Dark Down 54.4 115.8 Up 05:38:05 - 06:08:05 10731

Wenatchee 05:53:05 -55.4 Dark Down 54.4 115.3 Up 05:38:05 - 06:08:05 10708

Ellensburg 05:53:06 -55.5 Dark Down 54.4 114.6 Up 05:38:06 - 06:08:06 10671

Yakima 05:53:08 -55.7 Dark Down 54.6 114.0 Up 05:38:08 - 06:08:08 10631

Toppenish/White Swan 05:53:07 -55.9 Dark Down 54.8 114.0 Up 05:38:07 - 06:08:07 10607

Pasco 05:53:05 -56.7 Dark Down 55.6 115.2 Up 05:38:05 - 06:08:05 10573

Goldendale 05:53:09 -56.0 Dark Down 54.8 112.8 Up 05:38:09 - 06:08:09 10560

PNWRO 05:53:04 -57.0 Dark Down 55.9 115.2 Up 05:38:04 - 06:08:04 10545

The Dalles 05:53:11 -55.9 Dark Down 54.6 112.1 Up 05:38:11 - 06:08:11 10545

Maupin 05:53:11 -56.1 Dark Down 54.8 111.6 Up 05:38:11 - 06:08:11 10501

Sisters 05:53:14 -56.3 Dark Down 54.8 110.0 Up 05:38:14 - 06:08:14 10423

Redmond 05:53:13 -56.5 Dark Down 55.1 110.4 Up 05:38:13 - 06:08:13 10413

Bend 05:53:13 -56.5 Dark Down 55.1 109.9 Up 05:38:13 - 06:08:13 10394

Oregon Observatory 05:53:15 -56.5 Dark Down 55.1 109.6 Up 05:38:15 - 06:08:15 10380

La Pine/Gilchrist 05:53:15 -56.6 Dark Down 55.1 109.2 Up 05:38:15 - 06:08:15 10360

North Lake 05:53:14 -57.2 Dark Down 55.6 109.2 Up 05:38:14 - 06:08:14 10305

Paisley 05:53:13 -57.7 Dark Down 56.1 108.8 Up 05:38:13 - 06:08:13 10243

Klamath Falls 05:53:18 -57.0 Dark Down 55.3 107.0 Up 05:38:18 - 06:08:18 10219

Lakeview 05:53:14 -58.0 Dark Down 56.4 108.3 Up 05:38:14 - 06:08:14 10188

Cedarville 05:53:15 -58.4 Dark Down 56.7 107.6 Up 05:38:15 - 06:08:15 10117

Fall River/Burney 05:53:19 -57.8 Dark Down 56.0 105.7 Up 05:38:19 - 06:08:19 10092

Susanville 05:53:17 -58.5 Dark Down 56.7 105.5 Up 05:38:17 - 06:08:17 10013

Greenville 05:53:19 -58.4 Dark Down 56.5 104.8 Up 05:38:19 - 06:08:19 9990

Gimple 05:53:19 -58.5 Dark Down 56.6 104.9 Up 05:38:19 - 06:08:19 9988

Quincy 05:53:20 -58.5 Dark Down 56.6 104.5 Up 05:38:20 - 06:08:20 9969

Portola 05:53:19 -58.9 Dark Down 57.0 104.8 Up 05:38:19 - 06:08:19 9947

Reno 05:53:17 -59.5 Dark Down 57.5 105.0 Up 05:38:17 - 06:08:17 9907

Carson City 05:53:17 -59.6 Dark Down 57.6 104.4 Up 05:38:17 - 06:08:17 9869

Gardnerville 05:53:18 -59.8 Dark Down 57.7 104.1 Up 05:38:18 - 06:08:18 9843

Yerington 05:53:16 -60.2 Dark Down 58.1 104.7 Up 05:38:16 - 06:08:16 9837

Hawthorne 05:53:16 -60.7 Dark Down 58.7 104.5 Up 05:38:16 - 06:08:16 9779

Niwot 05:52:31 -68.4 Dark Up 67.4 124.1 Up 05:37:31 - 06:07:31 9744

SwRI 05:52:31 -68.4 Dark Up 67.4 123.7 Up 05:37:31 - 06:07:31 9734

Lee Vining 05:53:17 -60.6 Dark Down 58.4 103.2 Up 05:38:17 - 06:08:17 9729

Tonopah 05:53:12 -61.9 Dark Down 59.8 105.1 Up 05:38:12 - 06:08:12 9703

Bishop 05:53:16 -61.3 Dark Down 59.1 102.9 Up 05:38:16 - 06:08:16 9653

Beatty 05:53:12 -62.7 Dark Down 60.5 103.6 Up 05:38:12 - 06:08:12 9573

Indian Springs 05:53:09 -63.6 Dark Down 61.4 104.0 Up 05:38:09 - 06:08:09 9519

CPSLO 05:53:25 -60.2 Dark Down 57.7 97.7 Up 05:38:25 - 06:08:25 9482

Henderson 05:53:08 -64.3 Dark Down 62.1 103.7 Up 05:38:08 - 06:08:08 9450

Searchlight/Boulder City 05:53:08 -64.6 Dark Down 62.2 102.7 Up 05:38:08 - 06:08:08 9388

Patrick 05:53:05 -65.4 Dark Down 63.1 103.6 Up 05:38:05 - 06:08:05 9365

Laughlin/Bullhead City 05:53:07 -64.9 Dark Down 62.6 102.5 Up 05:38:07 - 06:08:07 9350

Kingman/Dolan Springs 05:53:06 -65.3 Dark Down 63.0 103.0 Up 05:38:06 - 06:08:06 9344

Mohave Valley 05:53:07 -65.1 Dark Down 62.6 102.0 Up 05:38:07 - 06:08:07 9321

DCO 05:53:03 -66.0 Dark Down 63.7 103.7 Up 05:38:03 - 06:08:03 9320

Wildwood 05:53:21 -62.2 Dark Down 59.5 97.3 Up 05:38:21 - 06:08:21 9312

Lake Havasu City 05:53:08 -65.4 Dark Down 62.9 101.4 Up 05:38:08 - 06:08:08 9274

Idyllwild 05:53:15 -63.8 Dark Down 61.1 98.1 Up 05:38:15 - 06:08:15 9237

Parker 05:53:07 -65.5 Dark Down 63.0 100.8 Up 05:38:07 - 06:08:07 9236

Blythe 05:53:09 -65.5 Dark Down 62.9 99.5 Up 05:38:09 - 06:08:09 9185

George/Scottsdale 05:53:00 -67.5 Dark Down 65.1 102.1 Up 05:38:00 - 06:08:00 9150

Calipatria 05:53:13 -64.9 Dark Down 62.2 97.8 Up 05:38:13 - 06:08:13 9149

Yuma 05:53:10 -65.7 Dark Down 63.0 97.7 Up 05:38:10 - 06:08:10 9087

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 00YX1, (2027/12/19 05:51UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.21  73
Alnath         05:26:17.5 +28:36:23  1.6  9.13  80
139 Tau        05:57:59.6 +25:57:14  4.7  1.61  73
PPM 095328     06:04:12.1 +25:26:37  8.2  0.14  71
PPM 095349     06:05:00.9 +25:21:44 11.2  0.12  71
00YX1          06:04:47.4 +25:28:05 15.9        71
Positions are for J2000

Event circumstances last updated at 2020/09/05 22:07:46 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	05:52:58	-54.3	Dark	Down	53.7	120.0	Up	05:37:58 - 06:07:58	10966
Kelowna	05:52:59	-54.5	Dark	Down	53.8	119.3	Up	05:37:59 - 06:07:59	10931
Peachland	05:53:00	-54.4	Dark	Down	53.7	118.8	Up	05:38:00 - 06:08:00	10925
Summerland	05:53:00	-54.5	Dark	Down	53.8	118.8	Up	05:38:00 - 06:08:00	10909
Penticton	05:52:59	-54.6	Dark	Down	53.9	118.8	Up	05:37:59 - 06:07:59	10901
Victoria	05:53:11	-53.1	Dark	Down	52.1	113.3	Up	05:38:11 - 06:08:11	10870
Oliver	05:53:00	-54.8	Dark	Down	54.0	118.4	Up	05:38:00 - 06:08:00	10867
Anarchist Mountain Observatory	05:53:00	-55.0	Dark	Down	54.2	118.4	Up	05:38:00 - 06:08:00	10847
Tonasket	05:53:01	-55.2	Dark	Down	54.3	118.0	Up	05:38:01 - 06:08:01	10819
Okanogan	05:53:02	-55.3	Dark	Down	54.4	117.4	Up	05:38:02 - 06:08:02	10788
Brewster	05:53:03	-55.3	Dark	Down	54.4	116.8	Up	05:38:03 - 06:08:03	10765
Manson/Chelan	05:53:04	-55.3	Dark	Down	54.3	116.1	Up	05:38:04 - 06:08:04	10751
Entiat	05:53:05	-55.3	Dark	Down	54.4	115.8	Up	05:38:05 - 06:08:05	10731
Wenatchee	05:53:05	-55.4	Dark	Down	54.4	115.3	Up	05:38:05 - 06:08:05	10708
Ellensburg	05:53:06	-55.5	Dark	Down	54.4	114.6	Up	05:38:06 - 06:08:06	10671
Yakima	05:53:08	-55.7	Dark	Down	54.6	114.0	Up	05:38:08 - 06:08:08	10631
Toppenish/White Swan	05:53:07	-55.9	Dark	Down	54.8	114.0	Up	05:38:07 - 06:08:07	10607
Pasco	05:53:05	-56.7	Dark	Down	55.6	115.2	Up	05:38:05 - 06:08:05	10573
Goldendale	05:53:09	-56.0	Dark	Down	54.8	112.8	Up	05:38:09 - 06:08:09	10560
PNWRO	05:53:04	-57.0	Dark	Down	55.9	115.2	Up	05:38:04 - 06:08:04	10545
The Dalles	05:53:11	-55.9	Dark	Down	54.6	112.1	Up	05:38:11 - 06:08:11	10545
Maupin	05:53:11	-56.1	Dark	Down	54.8	111.6	Up	05:38:11 - 06:08:11	10501
Sisters	05:53:14	-56.3	Dark	Down	54.8	110.0	Up	05:38:14 - 06:08:14	10423
Redmond	05:53:13	-56.5	Dark	Down	55.1	110.4	Up	05:38:13 - 06:08:13	10413
Bend	05:53:13	-56.5	Dark	Down	55.1	109.9	Up	05:38:13 - 06:08:13	10394
Oregon Observatory	05:53:15	-56.5	Dark	Down	55.1	109.6	Up	05:38:15 - 06:08:15	10380
La Pine/Gilchrist	05:53:15	-56.6	Dark	Down	55.1	109.2	Up	05:38:15 - 06:08:15	10360
North Lake	05:53:14	-57.2	Dark	Down	55.6	109.2	Up	05:38:14 - 06:08:14	10305
Paisley	05:53:13	-57.7	Dark	Down	56.1	108.8	Up	05:38:13 - 06:08:13	10243
Klamath Falls	05:53:18	-57.0	Dark	Down	55.3	107.0	Up	05:38:18 - 06:08:18	10219
Lakeview	05:53:14	-58.0	Dark	Down	56.4	108.3	Up	05:38:14 - 06:08:14	10188
Cedarville	05:53:15	-58.4	Dark	Down	56.7	107.6	Up	05:38:15 - 06:08:15	10117
Fall River/Burney	05:53:19	-57.8	Dark	Down	56.0	105.7	Up	05:38:19 - 06:08:19	10092
Susanville	05:53:17	-58.5	Dark	Down	56.7	105.5	Up	05:38:17 - 06:08:17	10013
Greenville	05:53:19	-58.4	Dark	Down	56.5	104.8	Up	05:38:19 - 06:08:19	9990
Gimple	05:53:19	-58.5	Dark	Down	56.6	104.9	Up	05:38:19 - 06:08:19	9988
Quincy	05:53:20	-58.5	Dark	Down	56.6	104.5	Up	05:38:20 - 06:08:20	9969
Portola	05:53:19	-58.9	Dark	Down	57.0	104.8	Up	05:38:19 - 06:08:19	9947
Reno	05:53:17	-59.5	Dark	Down	57.5	105.0	Up	05:38:17 - 06:08:17	9907
Carson City	05:53:17	-59.6	Dark	Down	57.6	104.4	Up	05:38:17 - 06:08:17	9869
Gardnerville	05:53:18	-59.8	Dark	Down	57.7	104.1	Up	05:38:18 - 06:08:18	9843
Yerington	05:53:16	-60.2	Dark	Down	58.1	104.7	Up	05:38:16 - 06:08:16	9837
Hawthorne	05:53:16	-60.7	Dark	Down	58.7	104.5	Up	05:38:16 - 06:08:16	9779
Niwot	05:52:31	-68.4	Dark	Up	67.4	124.1	Up	05:37:31 - 06:07:31	9744
SwRI	05:52:31	-68.4	Dark	Up	67.4	123.7	Up	05:37:31 - 06:07:31	9734
Lee Vining	05:53:17	-60.6	Dark	Down	58.4	103.2	Up	05:38:17 - 06:08:17	9729
Tonopah	05:53:12	-61.9	Dark	Down	59.8	105.1	Up	05:38:12 - 06:08:12	9703
Bishop	05:53:16	-61.3	Dark	Down	59.1	102.9	Up	05:38:16 - 06:08:16	9653
Beatty	05:53:12	-62.7	Dark	Down	60.5	103.6	Up	05:38:12 - 06:08:12	9573
Indian Springs	05:53:09	-63.6	Dark	Down	61.4	104.0	Up	05:38:09 - 06:08:09	9519
CPSLO	05:53:25	-60.2	Dark	Down	57.7	97.7	Up	05:38:25 - 06:08:25	9482
Henderson	05:53:08	-64.3	Dark	Down	62.1	103.7	Up	05:38:08 - 06:08:08	9450
Searchlight/Boulder City	05:53:08	-64.6	Dark	Down	62.2	102.7	Up	05:38:08 - 06:08:08	9388
Patrick	05:53:05	-65.4	Dark	Down	63.1	103.6	Up	05:38:05 - 06:08:05	9365
Laughlin/Bullhead City	05:53:07	-64.9	Dark	Down	62.6	102.5	Up	05:38:07 - 06:08:07	9350
Kingman/Dolan Springs	05:53:06	-65.3	Dark	Down	63.0	103.0	Up	05:38:06 - 06:08:06	9344
Mohave Valley	05:53:07	-65.1	Dark	Down	62.6	102.0	Up	05:38:07 - 06:08:07	9321
DCO	05:53:03	-66.0	Dark	Down	63.7	103.7	Up	05:38:03 - 06:08:03	9320
Wildwood	05:53:21	-62.2	Dark	Down	59.5	97.3	Up	05:38:21 - 06:08:21	9312
Lake Havasu City	05:53:08	-65.4	Dark	Down	62.9	101.4	Up	05:38:08 - 06:08:08	9274
Idyllwild	05:53:15	-63.8	Dark	Down	61.1	98.1	Up	05:38:15 - 06:08:15	9237
Parker	05:53:07	-65.5	Dark	Down	63.0	100.8	Up	05:38:07 - 06:08:07	9236
Blythe	05:53:09	-65.5	Dark	Down	62.9	99.5	Up	05:38:09 - 06:08:09	9185
George/Scottsdale	05:53:00	-67.5	Dark	Down	65.1	102.1	Up	05:38:00 - 06:08:00	9150
Calipatria	05:53:13	-64.9	Dark	Down	62.2	97.8	Up	05:38:13 - 06:08:13	9149
Yuma	05:53:10	-65.7	Dark	Down	63.0	97.7	Up	05:38:10 - 06:08:10	9087