RECON: TNO occultation with 523742

Event between (523742) 14TZ85 and star GA1180:03127643 with event index number of 1097122

Geocentric closest approach at 2022/01/13 10:19:59 UTC

J2000 position of star is 08:10:35.8 +29:56:29
Equinox of date position of star is 08:11:48.1 +29:52:58
Stellar brightness G=15.5, use SENSEUP=128
Star is 55 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 54.2 AU from the Sun and 53.3 AU from the Earth.
The TNO is moving 26.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 359 seconds.
The 1-sigma cross-track error in the shadow position is 5635 km.
The sky-plane scale is 38639.6 km/arcsec.

The TNO has an absolute magnitude Hv=4.8
Diameter=660.7 km assuming a 5% albedo -- 24.7 sec chord
Diameter=269.7 km assuming a 30% albedo -- 10.1 sec chord
Dynamical classification is 7:4EII
 
 
 
 
 
 

Star training set for 523742, (2022/01/13 10:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.8 +27:58:16  1.1  5.85  50
15 Cnc         08:14:30.6 +29:35:20  5.6  0.62  56
PPM 098469     08:14:06.1 +29:28:28  8.5  0.61  56
PPM 073454     08:10:46.2 +30:16:52  9.2  0.48  55
PPM 098425     08:11:56.2 +29:35:26 11.6  0.28  55
523742         08:11:57.7 +29:52:30 15.5        56
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 2.5 sigma about the mid-time.
The median site spacing is 17.9 km RECON observability=1.0 and success probability=6.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:19:14 -51.3 Dark Up 62.2 233.7 Up 10:04:14 - 10:34:14 -3664
Summerland 10:19:14 -51.7 Dark Up 62.6 233.7 Up 10:04:14 - 10:34:14 -3699
Penticton 10:19:14 -51.6 Dark Up 62.5 234.0 Up 10:04:14 - 10:34:14 -3702
Okanagan Falls 10:19:13 -51.8 Dark Up 62.7 234.2 Up 10:04:13 - 10:34:13 -3720
Oliver 10:19:13 -51.9 Dark Up 62.8 234.5 Up 10:04:13 - 10:34:13 -3734
Anarchist Mountain Observatory 10:19:12 -51.8 Dark Up 62.8 235.1 Up 10:04:12 - 10:34:12 -3744
Oroville 10:19:12 -51.9 Dark Up 62.8 235.1 Up 10:04:12 - 10:34:12 -3754
Tonasket 10:19:12 -52.1 Dark Up 63.0 235.5 Up 10:04:12 - 10:34:12 -3775
Okanogan 10:19:11 -52.3 Dark Up 63.2 235.8 Up 10:04:11 - 10:34:11 -3810
Brewster 10:19:11 -52.6 Dark Up 63.5 235.9 Up 10:04:11 - 10:34:11 -3841
Manson/Chelan 10:19:12 -52.9 Dark Up 63.8 235.7 Up 10:04:12 - 10:34:12 -3871
Entiat 10:19:12 -53.1 Dark Up 64.0 236.0 Up 10:04:12 - 10:34:12 -3894
Wenatchee 10:19:11 -53.3 Dark Up 64.2 236.3 Up 10:04:11 - 10:34:11 -3920
Ellensburg 10:19:11 -53.6 Dark Up 64.5 236.7 Up 10:04:11 - 10:34:11 -3965
Pasco 10:19:06 -53.2 Dark Up 64.1 240.0 Up 10:04:06 - 10:34:06 -3992
Yakima 10:19:11 -53.9 Dark Up 64.8 237.3 Up 10:04:11 - 10:34:11 -4004
PNWRO 10:19:05 -53.2 Dark Up 64.1 240.8 Up 10:04:05 - 10:34:05 -4008
Toppenish/White Swan 10:19:09 -53.9 Dark Up 64.8 238.0 Up 10:04:09 - 10:34:09 -4019
George/Umatilla 10:19:06 -53.5 Dark Up 64.4 240.3 Up 10:04:06 - 10:34:06 -4030
Niwot 10:18:20 -45.9 Dark Up 56.3 265.0 Up 10:03:20 - 10:33:20 -4061
SwRI 10:18:20 -46.0 Dark Up 56.4 265.1 Up 10:03:20 - 10:33:20 -4074
Goldendale 10:19:10 -54.4 Dark Up 65.3 238.3 Up 10:04:10 - 10:34:10 -4084
The Dalles 10:19:10 -54.8 Dark Up 65.7 238.2 Up 10:04:10 - 10:34:10 -4116
Maupin 10:19:08 -54.9 Dark Up 65.8 239.2 Up 10:04:08 - 10:34:08 -4153
Madras/Culver 10:19:07 -55.2 Dark Up 66.1 240.1 Up 10:04:07 - 10:34:07 -4206
Redmond 10:19:07 -55.5 Dark Up 66.3 240.8 Up 10:04:07 - 10:34:07 -4242
Sisters 10:19:08 -55.7 Dark Up 66.6 240.1 Up 10:04:08 - 10:34:08 -4252
Bend 10:19:07 -55.7 Dark Up 66.5 241.0 Up 10:04:07 - 10:34:07 -4267
Oregon Observatory 10:19:07 -55.8 Dark Up 66.7 241.1 Up 10:04:07 - 10:34:07 -4288
La Pine/Gilchrist 10:19:07 -56.0 Dark Up 66.8 241.5 Up 10:04:07 - 10:34:07 -4309
North Lake 10:19:04 -55.8 Dark Up 66.7 243.2 Up 10:04:04 - 10:34:04 -4332
Paisley 10:19:03 -55.9 Dark Up 66.7 244.9 Up 10:04:03 - 10:34:03 -4374
Lakeview 10:19:01 -56.0 Dark Up 66.8 246.2 Up 10:04:01 - 10:34:01 -4417
Chiloquin 10:19:06 -56.8 Dark Up 67.6 243.3 Up 10:04:06 - 10:34:06 -4428
Klamath Falls 10:19:04 -56.9 Dark Up 67.7 244.1 Up 10:04:04 - 10:34:04 -4459
Cedarville 10:18:59 -56.2 Dark Up 66.9 247.9 Up 10:03:59 - 10:33:59 -4475
Tulelake 10:19:03 -56.8 Dark Up 67.6 245.2 Up 10:04:03 - 10:34:03 -4475
Fall River/Burney 10:19:02 -57.2 Dark Up 67.9 247.3 Up 10:04:02 - 10:34:02 -4561
Susanville 10:18:59 -57.0 Dark Up 67.6 249.7 Up 10:03:59 - 10:33:59 -4599
Gimple 10:18:58 -57.2 Dark Up 67.9 250.1 Up 10:03:58 - 10:33:58 -4633
Greenville 10:18:59 -57.3 Dark Up 67.9 250.0 Up 10:03:59 - 10:33:59 -4636
Portola 10:18:57 -57.1 Dark Up 67.7 251.3 Up 10:03:57 - 10:33:57 -4652
Quincy 10:18:59 -57.4 Dark Up 68.0 250.4 Up 10:03:59 - 10:33:59 -4655
Reno 10:18:54 -56.8 Dark Up 67.3 252.7 Up 10:03:54 - 10:33:54 -4656
Yerington 10:18:52 -56.5 Dark Up 67.0 254.7 Up 10:03:52 - 10:33:52 -4688
Carson City 10:18:54 -56.9 Dark Up 67.4 253.6 Up 10:03:54 - 10:33:54 -4691
Tonopah 10:18:45 -55.4 Dark Up 65.7 258.8 Up 10:03:45 - 10:33:45 -4711
Gardnerville 10:18:53 -57.0 Dark Up 67.4 254.2 Up 10:03:53 - 10:33:53 -4713
Hawthorne 10:18:49 -56.3 Dark Up 66.7 256.3 Up 10:03:49 - 10:33:49 -4715
Lee Vining 10:18:50 -56.9 Dark Up 67.2 257.1 Up 10:03:50 - 10:33:50 -4787
Indian Springs 10:18:38 -54.7 Dark Up 64.8 263.3 Up 10:03:38 - 10:33:38 -4799
Beatty 10:18:41 -55.4 Dark Up 65.6 261.7 Up 10:03:41 - 10:33:41 -4807
Bishop 10:18:47 -56.5 Dark Up 66.8 259.2 Up 10:03:47 - 10:33:47 -4821
Henderson 10:18:36 -54.3 Dark Up 64.3 264.9 Up 10:03:36 - 10:33:36 -4825
Patrick 10:18:32 -53.6 Dark Up 63.5 267.0 Up 10:03:32 - 10:33:32 -4843
DCO 10:18:28 -53.1 Dark Up 62.9 268.0 Up 10:03:28 - 10:33:28 -4845
Kingman/Dolan Springs 10:18:30 -53.8 Dark Up 63.6 267.3 Up 10:03:30 - 10:33:30 -4872
Searchlight/Boulder City 10:18:33 -54.4 Dark Up 64.3 266.2 Up 10:03:33 - 10:33:33 -4878
Lone Pine 10:18:44 -56.5 Dark Up 66.7 261.2 Up 10:03:44 - 10:33:44 -4884
Laughlin/Bullhead City 10:18:32 -54.2 Dark Up 64.0 267.0 Up 10:03:32 - 10:33:32 -4894
Mohave Valley 10:18:32 -54.2 Dark Up 64.1 267.6 Up 10:03:32 - 10:33:32 -4920
Lake Havasu City 10:18:30 -54.1 Dark Up 63.9 268.5 Up 10:03:30 - 10:33:30 -4950
Parker 10:18:29 -54.2 Dark Up 63.9 269.3 Up 10:03:29 - 10:33:29 -4983
Blythe 10:18:30 -54.5 Dark Up 64.1 270.2 Up 10:03:30 - 10:33:30 -5046
CPSLO 10:18:50 -58.9 Dark Up 68.9 262.1 Up 10:03:50 - 10:33:50 -5105
Idyllwild 10:18:35 -56.2 Dark Up 65.8 268.7 Up 10:03:35 - 10:33:35 -5117
Calipatria 10:18:31 -55.4 Dark Up 64.9 270.7 Up 10:03:31 - 10:33:31 -5131
Yuma 10:18:27 -54.7 Dark Up 64.1 272.0 Up 10:03:27 - 10:33:27 -5139
Wildwood 10:18:42 -57.6 Dark Up 67.4 266.7 Up 10:03:42 - 10:33:42 -5152

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 523742, (2022/01/13 10:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  5.85  50
15 Cnc         08:13:08.9 +29:39:23  5.6  0.62  56
PPM 098469     08:12:44.4 +29:32:31  8.5  0.61  56
PPM 073454     08:09:24.0 +30:20:49  9.2  0.48  55
PPM 098425     08:10:34.4 +29:39:25 11.6  0.28  55
523742         08:10:35.8 +29:56:29 15.5        55
Positions are for J2000

Event circumstances last updated at 2019/06/08 02:56:55 UT

Marc W. Buie, Southwest Research Institute

RECON