RECON: TNO occultation with 00YX1

Event between 00YX1 and star GA1140:01272788 with event index number of 2007216

Geocentric closest approach at 2023/01/22 05:53:45 UTC

J2000 position of star is 05:32:48.6 +24:50:42
Equinox of date position of star is 05:34:13.5 +24:51:35
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=23.6

[RECON map]
Object is 43.2 AU from the Sun and 42.4 AU from the Earth.
Apparent velocity is 19.4 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 293 seconds.
The 1-sigma cross-track error in the shadow position is 1816 km.
The sky-plane scale is 30737.6 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 11.1 sec chord
Diameter=87.7 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 00YX1, (2023/01/22 05:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.8 +16:33:14  0.8 15.68 122
Alnath         05:27:45.1 +28:37:29  1.6  4.03 135
125 Tau        05:41:10.0 +25:54:28  5.2  1.89 138
PPM 094479     05:34:55.7 +24:38:35  7.0  0.27 137
00YX1          05:34:13.7 +24:51:35 16.7       137
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 3.1 sigma about the mid-time.
The median site spacing is 38.6 km RECON observability=1.0 and success probability=7.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:52:27 -53.9 Dark Down 58.7 217.3 Up 05:37:27 - 06:07:27 -3346
Kamloops 05:53:16 -48.6 Dark Down 63.8 192.6 Up 05:38:16 - 06:08:16 -3528
Kelowna 05:53:12 -49.6 Dark Down 64.4 194.8 Up 05:38:12 - 06:08:12 -3611
Peachland 05:53:13 -49.5 Dark Down 64.6 194.2 Up 05:38:13 - 06:08:13 -3622
Summerland 05:53:13 -49.6 Dark Down 64.7 194.5 Up 05:38:13 - 06:08:13 -3637
Penticton 05:53:13 -49.7 Dark Down 64.7 194.7 Up 05:38:13 - 06:08:13 -3644
Oliver 05:53:12 -49.9 Dark Down 65.1 194.9 Up 05:38:12 - 06:08:12 -3679
Anarchist Mountain Observatory 05:53:12 -50.1 Dark Down 65.2 195.4 Up 05:38:12 - 06:08:12 -3697
Victoria 05:53:27 -48.1 Dark Down 66.2 186.9 Up 05:38:27 - 06:08:27 -3741
Okanogan 05:53:12 -50.4 Dark Down 65.9 195.3 Up 05:38:12 - 06:08:12 -3762
Brewster 05:53:12 -50.4 Dark Down 66.2 195.1 Up 05:38:12 - 06:08:12 -3790
Manson/Chelan 05:53:14 -50.3 Dark Down 66.4 194.4 Up 05:38:14 - 06:08:14 -3811
Wenatchee 05:53:15 -50.5 Dark Down 66.9 194.3 Up 05:38:15 - 06:08:15 -3860
Ellensburg 05:53:16 -50.6 Dark Down 67.4 194.0 Up 05:38:16 - 06:08:16 -3902
Yakima 05:53:16 -50.8 Dark Down 67.8 194.2 Up 05:38:16 - 06:08:16 -3944
Toppenish/White Swan 05:53:15 -51.0 Dark Down 67.9 194.7 Up 05:38:15 - 06:08:15 -3967
PNWRO 05:53:09 -52.0 Dark Down 68.0 198.5 Up 05:38:09 - 06:08:09 -4005
The Dalles 05:53:18 -50.9 Dark Down 68.8 193.3 Up 05:38:18 - 06:08:18 -4047
Maupin 05:53:17 -51.2 Dark Down 69.2 193.8 Up 05:38:17 - 06:08:17 -4090
Sisters 05:53:19 -51.3 Dark Down 70.1 193.2 Up 05:38:19 - 06:08:19 -4182
Bend 05:53:19 -51.6 Dark Down 70.3 194.0 Up 05:38:19 - 06:08:19 -4207
Oregon Observatory 05:53:19 -51.5 Dark Down 70.5 193.8 Up 05:38:19 - 06:08:19 -4225
Chiloquin 05:53:20 -51.9 Dark Down 71.9 193.5 Up 05:38:20 - 06:08:20 -4363
Klamath Falls 05:53:20 -52.1 Dark Down 72.2 194.0 Up 05:38:20 - 06:08:20 -4400
Cedarville 05:53:14 -53.4 Dark Down 72.5 199.2 Up 05:38:14 - 06:08:14 -4476
Fall River/Burney 05:53:19 -52.8 Dark Down 73.3 196.1 Up 05:38:19 - 06:08:19 -4526
Dunrhomin 05:52:11 -63.3 Dark Down 66.6 235.1 Up 05:37:11 - 06:07:11 -4555
Nikitin 05:52:11 -63.4 Dark Down 66.8 235.5 Up 05:37:11 - 06:07:11 -4575
CU-SBO 05:52:11 -63.4 Dark Down 66.8 235.4 Up 05:37:11 - 06:07:11 -4582
Greenville 05:53:17 -53.5 Dark Down 74.0 198.4 Up 05:38:17 - 06:08:17 -4623
Gimple 05:53:17 -53.5 Dark Down 74.0 198.7 Up 05:38:17 - 06:08:17 -4624
Quincy 05:53:17 -53.6 Dark Down 74.2 198.7 Up 05:38:17 - 06:08:17 -4645
Portola 05:53:15 -53.9 Dark Down 74.2 200.3 Up 05:38:15 - 06:08:15 -4659
Reno 05:53:12 -54.5 Dark Down 74.3 202.7 Up 05:38:12 - 06:08:12 -4688
Carson City 05:53:12 -54.7 Dark Down 74.6 203.3 Up 05:38:12 - 06:08:12 -4727
Yerington 05:53:09 -55.2 Dark Down 74.6 205.5 Up 05:38:09 - 06:08:09 -4748
Gardnerville 05:53:11 -54.8 Dark Down 74.8 203.8 Up 05:38:11 - 06:08:11 -4753
Hawthorne 05:53:07 -55.7 Dark Down 74.8 208.0 Up 05:38:07 - 06:08:07 -4798
Lee Vining 05:53:09 -55.6 Dark Down 75.5 207.4 Up 05:38:09 - 06:08:09 -4859
Bishop 05:53:05 -56.4 Dark Down 75.7 210.9 Up 05:38:05 - 06:08:05 -4924
Beatty 05:52:58 -57.7 Dark Down 75.4 217.0 Up 05:37:58 - 06:07:58 -4973
Patrick 05:52:45 -60.4 Dark Down 74.9 228.8 Up 05:37:45 - 06:07:45 -5128
Laughlin/Bullhead City 05:52:48 -60.0 Dark Down 75.5 227.7 Up 05:37:48 - 06:07:48 -5157
Lake Havasu City 05:52:46 -60.4 Dark Down 75.8 230.4 Up 05:37:46 - 06:07:46 -5230
Wildwood 05:53:06 -57.3 Dark Down 78.5 218.3 Up 05:38:06 - 06:08:06 -5281
George/Scottsdale 05:52:35 -62.6 Dark Down 74.6 238.5 Up 05:37:35 - 06:07:35 -5306
Idyllwild 05:52:57 -58.9 Dark Down 77.8 225.9 Up 05:37:57 - 06:07:57 -5318
Calipatria 05:52:52 -60.0 Dark Down 77.4 231.6 Up 05:37:52 - 06:07:52 -5383
Yuma 05:52:47 -60.8 Dark Down 77.1 235.5 Up 05:37:47 - 06:07:47 -5428

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, (2023/01/22 05:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 15.68 122
Alnath         05:26:17.6 +28:36:23  1.6  4.03 135
125 Tau        05:39:44.2 +25:53:49  5.2  1.89 138
PPM 094479     05:33:30.8 +24:37:44  7.0  0.27 137
00YX1          05:32:48.6 +24:50:42 16.7       136
Positions are for J2000

Event circumstances last updated at 2023/01/07 03:18:17 UT

Marc W. Buie, Southwest Research Institute

RECON