RECON: TNO occultation with 523733

Event between (523733) 14PR70 and star GA1200:02491869 with event index number of 2308781

Geocentric closest approach at 2028/02/16 02:10:27 UTC

J2000 position of star is 06:23:01.4 +30:10:08
Equinox of date position of star is 06:24:33.6 +30:09:18
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 127 degrees from the moon. Moon is 63% illuminated.
Apparent brightness V=23.5

[RECON map]
Object is 19.8 AU from the Sun and 19.2 AU from the Earth.
Apparent velocity is 11.7 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 173 seconds.
The 1-sigma cross-track error in the shadow position is 729 km.
The sky-plane scale is 13896.4 km/arcsec.

The object has an absolute magnitude Hv=10.4
Diameter=50.4 km assuming a 5% albedo -- 4.4 sec chord
Diameter=20.6 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523733, (2028/02/16 02:16UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:02.3 +27:57:21  1.1 18.08 109
Alnath         05:28:04.3 +28:37:43  1.6 12.45 139
PPM 095923     06:26:40.5 +29:41:22  6.5  0.61 126
PPM 095847     06:23:51.9 +29:56:54  7.3  0.29 127
PPM 071558     06:25:12.8 +29:59:34  9.5  0.18 127
PPM 071546     06:24:24.4 +30:09:58 10.3  0.09 127
523733         06:24:49.6 +30:09:09 15.5       126
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 5.0 sigma about the mid-time.
The median site spacing is 17.2 km RECON observability=0.1 and success probability=43.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 02:12:59 -9.3 NT Down 55.6 112.2 Up 01:58:03 - 02:27:55 113
Victoria 02:13:25 -7.0 NT Down 54.5 106.2 Up 01:58:29 - 02:28:21 45
Peachland 02:13:02 -9.5 NT Down 56.3 111.6 Up 01:58:06 - 02:27:58 17
Kelowna 02:13:00 -9.7 NT Down 56.4 112.1 Up 01:58:04 - 02:27:56 16
Summerland 02:13:03 -9.6 NT Down 56.4 111.5 Up 01:58:07 - 02:27:59 1
Penticton 02:13:03 -9.6 NT Down 56.5 111.6 Up 01:58:07 - 02:27:59 -8
Oliver 02:13:05 -9.6 NT Down 56.6 111.1 Up 01:58:09 - 02:28:01 -37
Anarchist Mountain Observatory 02:13:05 -9.7 NT Down 56.8 111.1 Up 01:58:09 - 02:28:01 -58
Okanogan 02:13:10 -9.5 NT Down 56.9 109.9 Up 01:58:14 - 02:28:06 -104
Brewster 02:13:12 -9.3 NT Down 56.9 109.3 Up 01:58:16 - 02:28:08 -119
Manson/Chelan 02:13:15 -9.0 NT Down 56.7 108.6 Up 01:58:19 - 02:28:11 -124
Wenatchee 02:13:19 -8.8 NT Down 56.8 107.8 Up 01:58:23 - 02:28:15 -158
Ellensburg 02:13:22 -8.6 NT Down 56.8 107.0 Up 01:58:26 - 02:28:18 -184
Sleaford 02:11:46 -18.1 Dark Down 62.3 133.2 Up 01:56:50 - 02:26:42 -213
Yakima 02:13:24 -8.6 NT Down 56.9 106.3 Up 01:58:28 - 02:28:20 -218
Toppenish/White Swan 02:13:25 -8.7 NT Down 57.0 106.2 Up 01:58:29 - 02:28:21 -242
The Dalles 02:13:33 -8.0 NT Down 56.7 104.3 Up 01:58:37 - 02:28:29 -279
Maupin 02:13:35 -8.0 NT Down 56.9 103.8 Up 01:58:39 - 02:28:31 -319
PNWRO 02:13:20 -9.6 NT Down 58.1 107.2 Up 01:58:24 - 02:28:16 -329
Sisters 02:13:43 -7.5 NT Down 56.8 102.0 Up 01:58:47 - 02:28:39 -375
Bend 02:13:43 -7.7 NT Down 57.0 101.9 Up 01:58:47 - 02:28:39 -405
Oregon Observatory 02:13:44 -7.6 NT Down 57.0 101.5 Up 01:58:48 - 02:28:40 -415
Chiloquin 02:13:54 -7.1 NT Down 56.9 99.2 Up 01:58:58 - 02:28:50 -513
Klamath Falls 02:13:56 -7.1 NT Down 57.1 98.8 Up 01:59:00 - 02:28:52 -546
Fall River/Burney 02:14:00 -7.1 NT Down 57.5 97.3 Up 01:59:04 - 02:28:56 -665
Cedarville 02:13:52 -8.1 NT Down 58.3 99.0 Up 01:58:56 - 02:28:48 -671
Greenville 02:14:03 -7.3 NT Down 58.0 96.2 Up 01:59:07 - 02:28:59 -764
Gimple 02:14:02 -7.4 NT Down 58.0 96.3 Up 01:59:06 - 02:28:58 -767
Quincy 02:14:04 -7.3 NT Down 58.0 95.9 Up 01:59:08 - 02:29:00 -782
Portola 02:14:02 -7.6 NT Down 58.4 96.1 Up 01:59:06 - 02:28:58 -813
Reno 02:14:01 -8.1 NT Down 58.9 96.1 Up 01:59:05 - 02:28:57 -863
Carson City 02:14:02 -8.0 NT Down 58.9 95.6 Up 01:59:06 - 02:28:58 -896
Gardnerville 02:14:04 -8.0 NT Down 59.0 95.2 Up 01:59:08 - 02:29:00 -921
Yerington 02:14:00 -8.5 NT Down 59.5 95.7 Up 01:59:04 - 02:28:56 -940
Hawthorne 02:14:00 -8.8 NT Down 59.9 95.3 Up 01:59:04 - 02:28:56 -1004
Lee Vining 02:14:05 -8.4 NT Down 59.6 94.0 Up 01:59:09 - 02:29:01 -1036
Bishop 02:14:04 -8.8 NT Down 60.2 93.5 Up 01:59:08 - 02:29:00 -1121
Beatty 02:13:58 -10.0 NT Down 61.5 93.8 Up 01:59:02 - 02:28:54 -1231
Dunrhomin 02:12:35 -19.0 Dark Down 69.4 112.3 Up 01:57:39 - 02:27:31 -1344
Nikitin 02:12:36 -19.0 Dark Down 69.4 111.8 Up 01:57:40 - 02:27:32 -1361
CU-SBO 02:12:36 -19.0 Dark Down 69.4 111.6 Up 01:57:40 - 02:27:32 -1365
Wildwood 02:14:21 -8.2 NT Down 60.1 87.7 Up 01:59:25 - 02:29:17 -1418
Laughlin/Bullhead City 02:13:54 -11.5 NT Down 63.3 91.9 Up 01:58:58 - 02:28:50 -1485
Patrick 02:13:49 -12.1 AT Down 63.9 92.8 Up 01:58:53 - 02:28:45 -1490
Idyllwild 02:14:13 -9.6 NT Down 61.6 88.0 Up 01:59:17 - 02:29:09 -1532
Lake Havasu City 02:13:55 -11.7 NT Down 63.6 90.7 Up 01:58:59 - 02:28:51 -1560
Calipatria 02:14:08 -10.5 NT Down 62.6 87.4 Up 01:59:12 - 02:29:04 -1641
Yuma 02:14:05 -11.2 NT Down 63.3 87.0 Up 01:59:09 - 02:29:01 -1720
George/Scottsdale 02:13:44 -13.6 AT Down 65.6 90.5 Up 01:58:48 - 02:28:40 -1735

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 523733, (2028/02/16 02:16UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 18.08 109
Alnath         05:26:17.6 +28:36:23  1.6 12.45 139
PPM 095923     06:24:52.7 +29:42:25  6.5  0.61 126
PPM 095847     06:22:03.8 +29:57:51  7.3  0.29 127
PPM 071558     06:23:24.7 +30:00:34  9.5  0.18 127
PPM 071546     06:22:36.2 +30:10:56 10.3  0.09 127
523733         06:23:01.4 +30:10:08 15.5       127
Positions are for J2000

Event circumstances last updated at 2023/12/18 04:32:34 UT

Marc W. Buie, Southwest Research Institute

RECON