RECON: TNO occultation with 14UU228

Event between 14UU228 and star GA1080:00312147 with event index number of 1707688

Geocentric closest approach at 2021/12/08 05:24:02 UTC

J2000 position of star is 02:59:35.2 +18:50:45
Equinox of date position of star is 03:00:46.9 +18:55:43
Stellar brightness G=13.0, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 97 degrees from the moon. Moon is 21% illuminated.
TNO apparent brightness V=24.3

[RECON map]
TNO is 27.9 AU from the Sun and 27.0 AU from the Earth.
The TNO is moving 20.2 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 177 seconds.
The 1-sigma cross-track error in the shadow position is 1708 km.
The sky-plane scale is 19588.8 km/arcsec.

The TNO has an absolute magnitude Hv=9.8
Diameter=66.1 km assuming a 5% albedo -- 3.3 sec chord
Diameter=27.0 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is 3:2E

Star training set for 14UU228, (2021/12/08 05:24UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:10.9 +16:33:06  0.8 23.05 118
Hamal          02:08:24.9 +23:33:55  2.0 13.05  88
46Rho3Ari      02:57:40.7 +18:06:34  5.6  1.11  96
PPM 118712     02:59:57.8 +18:24:41  8.5  0.56  97
PPM 118729     03:00:50.2 +18:49:58  9.3  0.10  97
14UU228        03:00:49.8 +18:55:55 13.0        98
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 5.1 sigma about the mid-time.
The median site spacing is 25.6 km RECON observability=1.0 and success probability=18.8%

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 05:23:32 -50.5 Dark Down 58.2 168.9 Up 05:08:32 - 05:38:32 3210

Kelowna 05:23:32 -50.6 Dark Down 58.6 168.5 Up 05:08:32 - 05:38:32 3180

Peachland 05:23:34 -50.5 Dark Down 58.7 168.0 Up 05:08:34 - 05:38:34 3178

Victoria 05:23:48 -49.0 Dark Down 59.2 161.0 Up 05:08:48 - 05:38:48 3167

Summerland 05:23:34 -50.7 Dark Down 58.8 168.1 Up 05:08:34 - 05:38:34 3163

Penticton 05:23:33 -50.8 Dark Down 58.9 168.3 Up 05:08:33 - 05:38:33 3154

Oliver 05:23:34 -50.9 Dark Down 59.2 168.2 Up 05:08:34 - 05:38:34 3123

Anarchist Mountain Observatory 05:23:34 -51.1 Dark Down 59.4 168.5 Up 05:08:34 - 05:38:34 3103

Tonasket 05:23:35 -51.2 Dark Down 59.7 168.2 Up 05:08:35 - 05:38:35 3077

Okanogan 05:23:36 -51.3 Dark Down 60.0 167.8 Up 05:08:36 - 05:38:36 3052

Brewster 05:23:37 -51.3 Dark Down 60.3 167.4 Up 05:08:37 - 05:38:37 3033

Manson/Chelan 05:23:39 -51.2 Dark Down 60.4 166.6 Up 05:08:39 - 05:38:39 3024

Wenatchee 05:23:40 -51.3 Dark Down 60.9 166.1 Up 05:08:40 - 05:38:40 2986

Ellensburg 05:23:42 -51.4 Dark Down 61.2 165.5 Up 05:08:42 - 05:38:42 2955

Yakima 05:23:43 -51.5 Dark Down 61.6 165.3 Up 05:08:43 - 05:38:43 2919

Toppenish/White Swan 05:23:43 -51.7 Dark Down 61.8 165.5 Up 05:08:43 - 05:38:43 2895

Goldendale 05:23:46 -51.7 Dark Down 62.3 164.4 Up 05:08:46 - 05:38:46 2857

Pasco 05:23:39 -52.6 Dark Down 62.2 168.0 Up 05:08:39 - 05:38:39 2850

The Dalles 05:23:47 -51.6 Dark Down 62.5 163.6 Up 05:08:47 - 05:38:47 2847

PNWRO 05:23:38 -52.8 Dark Down 62.4 168.3 Up 05:08:38 - 05:38:38 2821

Maupin 05:23:47 -51.8 Dark Down 62.9 163.6 Up 05:08:47 - 05:38:47 2806

Sisters 05:23:51 -51.8 Dark Down 63.6 162.1 Up 05:08:51 - 05:38:51 2740

Redmond 05:23:50 -52.1 Dark Down 63.7 162.9 Up 05:08:50 - 05:38:50 2726

Bend 05:23:50 -52.1 Dark Down 63.9 162.5 Up 05:08:50 - 05:38:50 2711

Oregon Observatory 05:23:51 -52.1 Dark Down 64.0 162.1 Up 05:08:51 - 05:38:51 2699

La Pine/Gilchrist 05:23:52 -52.1 Dark Down 64.2 161.8 Up 05:08:52 - 05:38:52 2682

North Lake 05:23:51 -52.6 Dark Down 64.8 162.8 Up 05:08:51 - 05:38:51 2624

Paisley 05:23:51 -53.1 Dark Down 65.4 163.3 Up 05:08:51 - 05:38:51 2563

Klamath Falls 05:23:56 -52.4 Dark Down 65.5 160.3 Up 05:08:56 - 05:38:56 2555

Lakeview 05:23:51 -53.4 Dark Down 65.9 163.4 Up 05:08:51 - 05:38:51 2510

Cedarville 05:23:51 -53.8 Dark Down 66.6 163.4 Up 05:08:51 - 05:38:51 2443

Fall River/Burney 05:23:57 -53.0 Dark Down 66.7 160.2 Up 05:08:57 - 05:38:57 2434

Susanville 05:23:55 -53.8 Dark Down 67.5 161.5 Up 05:08:55 - 05:38:55 2352

Greenville 05:23:57 -53.6 Dark Down 67.7 160.6 Up 05:08:57 - 05:38:57 2335

Gimple 05:23:57 -53.7 Dark Down 67.7 160.8 Up 05:08:57 - 05:38:57 2332

Quincy 05:23:58 -53.7 Dark Down 67.9 160.4 Up 05:08:58 - 05:38:58 2315

Portola 05:23:56 -54.1 Dark Down 68.1 161.5 Up 05:08:56 - 05:38:56 2289

Reno 05:23:54 -54.6 Dark Down 68.5 162.9 Up 05:08:54 - 05:38:54 2244

Carson City 05:23:55 -54.8 Dark Down 68.9 162.6 Up 05:08:55 - 05:38:55 2209

Gardnerville 05:23:55 -54.9 Dark Down 69.1 162.6 Up 05:08:55 - 05:38:55 2184

Yerington 05:23:53 -55.3 Dark Down 69.2 164.1 Up 05:08:53 - 05:38:53 2171

Hawthorne 05:23:51 -55.8 Dark Down 69.8 165.2 Up 05:08:51 - 05:38:51 2110

Lee Vining 05:23:54 -55.6 Dark Down 70.2 163.5 Up 05:08:54 - 05:38:54 2070

Tonopah 05:23:47 -57.0 Dark Down 70.5 168.7 Up 05:08:47 - 05:38:47 2022

Bishop 05:23:53 -56.3 Dark Down 70.9 165.0 Up 05:08:53 - 05:38:53 1989

Dunrhomin 05:22:55 -64.2 Dark Down 67.6 199.8 Up 05:07:55 - 05:37:55 1920

Beatty 05:23:47 -57.7 Dark Down 71.7 169.4 Up 05:08:47 - 05:38:47 1894

CPSLO 05:24:06 -55.1 Dark Down 72.3 156.6 Up 05:09:06 - 05:39:06 1858

Indian Springs 05:23:43 -58.6 Dark Down 72.1 172.4 Up 05:08:43 - 05:38:43 1830

Henderson 05:23:41 -59.3 Dark Down 72.7 174.4 Up 05:08:41 - 05:38:41 1756

Wildwood 05:24:00 -56.9 Dark Down 74.0 161.5 Up 05:09:00 - 05:39:00 1673

Patrick 05:23:38 -60.3 Dark Down 73.4 177.8 Up 05:08:38 - 05:38:38 1660

Laughlin/Bullhead City 05:23:41 -59.8 Dark Down 73.6 175.5 Up 05:08:41 - 05:38:41 1656

Kingman/Dolan Springs 05:23:39 -60.2 Dark Down 73.6 177.2 Up 05:08:39 - 05:38:39 1644

Mohave Valley 05:23:41 -59.9 Dark Down 73.9 175.4 Up 05:08:41 - 05:38:41 1629

Lake Havasu City 05:23:41 -60.2 Dark Down 74.3 176.2 Up 05:08:41 - 05:38:41 1581

Idyllwild 05:23:53 -58.5 Dark Down 74.8 167.5 Up 05:08:53 - 05:38:53 1578

Parker 05:23:42 -60.3 Dark Down 74.7 176.2 Up 05:08:42 - 05:38:42 1545

Blythe 05:23:44 -60.2 Dark Down 75.2 175.0 Up 05:08:44 - 05:38:44 1501

Calipatria 05:23:49 -59.6 Dark Down 75.6 171.3 Up 05:08:49 - 05:38:49 1479

George/Scottsdale 05:23:32 -62.4 Dark Down 75.1 184.9 Up 05:08:32 - 05:38:32 1430

Yuma 05:23:46 -60.4 Dark Down 76.1 174.5 Up 05:08:46 - 05:38:46 1408

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 14UU228, (2021/12/08 05:24UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 23.05 118
Hamal          02:07:10.7 +23:27:42  2.0 13.05  88
46Rho3Ari      02:56:26.6 +18:01:19  5.6  1.11  96
PPM 118712     02:58:43.5 +18:19:29  8.5  0.56  97
PPM 118729     02:59:35.7 +18:44:47  9.3  0.10  97
14UU228        02:59:35.2 +18:50:45 13.0        97
Positions are for J2000

Event circumstances last updated at 2021/01/27 20:10:46 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	05:23:32	-50.5	Dark	Down	58.2	168.9	Up	05:08:32 - 05:38:32	3210
Kelowna	05:23:32	-50.6	Dark	Down	58.6	168.5	Up	05:08:32 - 05:38:32	3180
Peachland	05:23:34	-50.5	Dark	Down	58.7	168.0	Up	05:08:34 - 05:38:34	3178
Victoria	05:23:48	-49.0	Dark	Down	59.2	161.0	Up	05:08:48 - 05:38:48	3167
Summerland	05:23:34	-50.7	Dark	Down	58.8	168.1	Up	05:08:34 - 05:38:34	3163
Penticton	05:23:33	-50.8	Dark	Down	58.9	168.3	Up	05:08:33 - 05:38:33	3154
Oliver	05:23:34	-50.9	Dark	Down	59.2	168.2	Up	05:08:34 - 05:38:34	3123
Anarchist Mountain Observatory	05:23:34	-51.1	Dark	Down	59.4	168.5	Up	05:08:34 - 05:38:34	3103
Tonasket	05:23:35	-51.2	Dark	Down	59.7	168.2	Up	05:08:35 - 05:38:35	3077
Okanogan	05:23:36	-51.3	Dark	Down	60.0	167.8	Up	05:08:36 - 05:38:36	3052
Brewster	05:23:37	-51.3	Dark	Down	60.3	167.4	Up	05:08:37 - 05:38:37	3033
Manson/Chelan	05:23:39	-51.2	Dark	Down	60.4	166.6	Up	05:08:39 - 05:38:39	3024
Wenatchee	05:23:40	-51.3	Dark	Down	60.9	166.1	Up	05:08:40 - 05:38:40	2986
Ellensburg	05:23:42	-51.4	Dark	Down	61.2	165.5	Up	05:08:42 - 05:38:42	2955
Yakima	05:23:43	-51.5	Dark	Down	61.6	165.3	Up	05:08:43 - 05:38:43	2919
Toppenish/White Swan	05:23:43	-51.7	Dark	Down	61.8	165.5	Up	05:08:43 - 05:38:43	2895
Goldendale	05:23:46	-51.7	Dark	Down	62.3	164.4	Up	05:08:46 - 05:38:46	2857
Pasco	05:23:39	-52.6	Dark	Down	62.2	168.0	Up	05:08:39 - 05:38:39	2850
The Dalles	05:23:47	-51.6	Dark	Down	62.5	163.6	Up	05:08:47 - 05:38:47	2847
PNWRO	05:23:38	-52.8	Dark	Down	62.4	168.3	Up	05:08:38 - 05:38:38	2821
Maupin	05:23:47	-51.8	Dark	Down	62.9	163.6	Up	05:08:47 - 05:38:47	2806
Sisters	05:23:51	-51.8	Dark	Down	63.6	162.1	Up	05:08:51 - 05:38:51	2740
Redmond	05:23:50	-52.1	Dark	Down	63.7	162.9	Up	05:08:50 - 05:38:50	2726
Bend	05:23:50	-52.1	Dark	Down	63.9	162.5	Up	05:08:50 - 05:38:50	2711
Oregon Observatory	05:23:51	-52.1	Dark	Down	64.0	162.1	Up	05:08:51 - 05:38:51	2699
La Pine/Gilchrist	05:23:52	-52.1	Dark	Down	64.2	161.8	Up	05:08:52 - 05:38:52	2682
North Lake	05:23:51	-52.6	Dark	Down	64.8	162.8	Up	05:08:51 - 05:38:51	2624
Paisley	05:23:51	-53.1	Dark	Down	65.4	163.3	Up	05:08:51 - 05:38:51	2563
Klamath Falls	05:23:56	-52.4	Dark	Down	65.5	160.3	Up	05:08:56 - 05:38:56	2555
Lakeview	05:23:51	-53.4	Dark	Down	65.9	163.4	Up	05:08:51 - 05:38:51	2510
Cedarville	05:23:51	-53.8	Dark	Down	66.6	163.4	Up	05:08:51 - 05:38:51	2443
Fall River/Burney	05:23:57	-53.0	Dark	Down	66.7	160.2	Up	05:08:57 - 05:38:57	2434
Susanville	05:23:55	-53.8	Dark	Down	67.5	161.5	Up	05:08:55 - 05:38:55	2352
Greenville	05:23:57	-53.6	Dark	Down	67.7	160.6	Up	05:08:57 - 05:38:57	2335
Gimple	05:23:57	-53.7	Dark	Down	67.7	160.8	Up	05:08:57 - 05:38:57	2332
Quincy	05:23:58	-53.7	Dark	Down	67.9	160.4	Up	05:08:58 - 05:38:58	2315
Portola	05:23:56	-54.1	Dark	Down	68.1	161.5	Up	05:08:56 - 05:38:56	2289
Reno	05:23:54	-54.6	Dark	Down	68.5	162.9	Up	05:08:54 - 05:38:54	2244
Carson City	05:23:55	-54.8	Dark	Down	68.9	162.6	Up	05:08:55 - 05:38:55	2209
Gardnerville	05:23:55	-54.9	Dark	Down	69.1	162.6	Up	05:08:55 - 05:38:55	2184
Yerington	05:23:53	-55.3	Dark	Down	69.2	164.1	Up	05:08:53 - 05:38:53	2171
Hawthorne	05:23:51	-55.8	Dark	Down	69.8	165.2	Up	05:08:51 - 05:38:51	2110
Lee Vining	05:23:54	-55.6	Dark	Down	70.2	163.5	Up	05:08:54 - 05:38:54	2070
Tonopah	05:23:47	-57.0	Dark	Down	70.5	168.7	Up	05:08:47 - 05:38:47	2022
Bishop	05:23:53	-56.3	Dark	Down	70.9	165.0	Up	05:08:53 - 05:38:53	1989
Dunrhomin	05:22:55	-64.2	Dark	Down	67.6	199.8	Up	05:07:55 - 05:37:55	1920
Beatty	05:23:47	-57.7	Dark	Down	71.7	169.4	Up	05:08:47 - 05:38:47	1894
CPSLO	05:24:06	-55.1	Dark	Down	72.3	156.6	Up	05:09:06 - 05:39:06	1858
Indian Springs	05:23:43	-58.6	Dark	Down	72.1	172.4	Up	05:08:43 - 05:38:43	1830
Henderson	05:23:41	-59.3	Dark	Down	72.7	174.4	Up	05:08:41 - 05:38:41	1756
Wildwood	05:24:00	-56.9	Dark	Down	74.0	161.5	Up	05:09:00 - 05:39:00	1673
Patrick	05:23:38	-60.3	Dark	Down	73.4	177.8	Up	05:08:38 - 05:38:38	1660
Laughlin/Bullhead City	05:23:41	-59.8	Dark	Down	73.6	175.5	Up	05:08:41 - 05:38:41	1656
Kingman/Dolan Springs	05:23:39	-60.2	Dark	Down	73.6	177.2	Up	05:08:39 - 05:38:39	1644
Mohave Valley	05:23:41	-59.9	Dark	Down	73.9	175.4	Up	05:08:41 - 05:38:41	1629
Lake Havasu City	05:23:41	-60.2	Dark	Down	74.3	176.2	Up	05:08:41 - 05:38:41	1581
Idyllwild	05:23:53	-58.5	Dark	Down	74.8	167.5	Up	05:08:53 - 05:38:53	1578
Parker	05:23:42	-60.3	Dark	Down	74.7	176.2	Up	05:08:42 - 05:38:42	1545
Blythe	05:23:44	-60.2	Dark	Down	75.2	175.0	Up	05:08:44 - 05:38:44	1501
Calipatria	05:23:49	-59.6	Dark	Down	75.6	171.3	Up	05:08:49 - 05:38:49	1479
George/Scottsdale	05:23:32	-62.4	Dark	Down	75.1	184.9	Up	05:08:32 - 05:38:32	1430
Yuma	05:23:46	-60.4	Dark	Down	76.1	174.5	Up	05:08:46 - 05:38:46	1408