RECON: TNO occultation with 523733

Event between (523733) 14PR70 and star GA1200:02293228 with event index number of 2308568

Geocentric closest approach at 2026/12/22 07:05:13 UTC

J2000 position of star is 06:07:30.0 +30:45:59
Equinox of date position of star is 06:09:02.7 +30:45:42
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 26 degrees from the moon. Moon is 95% illuminated.
Apparent brightness V=23.1

[RECON map]
Object is 18.8 AU from the Sun and 17.8 AU from the Earth.
Apparent velocity is 22.2 km/sec on the sky relative to the star, or, 6.2 arcsec/hr.
The 1-sigma error in the time of the event is 77 seconds.
The 1-sigma cross-track error in the shadow position is 647 km.
The sky-plane scale is 12903.6 km/arcsec.

The object has an absolute magnitude Hv=10.4
Diameter=50.4 km assuming a 5% albedo -- 2.3 sec chord
Diameter=20.6 km assuming a 30% albedo -- 0.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523733, (2026/12/22 07:08UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:58.0 +27:57:32  1.1 21.43  48
Alnath         05:28:00.0 +28:37:40  1.6  9.20  17
PPM 071108     06:02:54.6 +31:01:59  6.0  1.38  25
PPM 071271     06:10:51.5 +31:15:32  8.1  0.61  27
PPM 071244     06:09:27.5 +30:40:51 10.0  0.09  26
523733         06:09:14.4 +30:45:40 16.0        27
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 37.7 km RECON observability=1.0 and success probability=118.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:05:17 -61.3 Dark Up 68.7 178.5 Up 06:58:23 - 07:12:10 1556
Kamloops 07:06:02 -60.8 Dark Up 67.2 145.3 Up 06:59:08 - 07:12:55 1483
Kelowna 07:06:00 -61.8 Dark Up 68.2 146.0 Up 06:59:06 - 07:12:53 1391
Peachland 07:06:01 -61.8 Dark Up 68.2 145.2 Up 06:59:07 - 07:12:54 1382
Summerland 07:06:01 -62.0 Dark Up 68.4 145.2 Up 06:59:07 - 07:12:54 1366
Penticton 07:06:01 -62.1 Dark Up 68.4 145.3 Up 06:59:07 - 07:12:54 1358
Oliver 07:06:01 -62.4 Dark Up 68.7 144.8 Up 06:59:07 - 07:12:54 1321
Anarchist Mountain Observatory 07:06:00 -62.6 Dark Up 69.0 145.0 Up 06:59:07 - 07:12:54 1301
Victoria 07:06:13 -61.7 Dark Up 67.7 136.1 Up 06:59:20 - 07:13:07 1293
Okanogan 07:06:02 -63.1 Dark Up 69.4 143.5 Up 06:59:08 - 07:12:55 1236
Brewster 07:06:03 -63.3 Dark Up 69.5 142.7 Up 06:59:09 - 07:12:56 1210
Manson/Chelan 07:06:04 -63.4 Dark Up 69.5 141.5 Up 06:59:10 - 07:12:57 1191
Wenatchee 07:06:05 -63.7 Dark Up 69.8 140.4 Up 06:59:11 - 07:12:58 1143
Ellensburg 07:06:06 -64.0 Dark Up 70.1 139.2 Up 06:59:12 - 07:12:59 1102
Yakima 07:06:07 -64.4 Dark Up 70.4 138.4 Up 06:59:13 - 07:13:00 1059
Toppenish/White Swan 07:06:06 -64.6 Dark Up 70.6 138.3 Up 06:59:13 - 07:13:00 1035
PNWRO 07:06:01 -65.4 Dark Up 71.5 141.0 Up 06:59:08 - 07:12:55 981
The Dalles 07:06:09 -65.0 Dark Up 70.8 135.1 Up 06:59:16 - 07:13:03 961
Maupin 07:06:10 -65.4 Dark Up 71.1 134.5 Up 06:59:16 - 07:13:03 915
Sisters 07:06:12 -65.9 Dark Up 71.5 131.6 Up 06:59:19 - 07:13:06 827
Bend 07:06:11 -66.2 Dark Up 71.8 131.6 Up 06:59:18 - 07:13:05 799
Oregon Observatory 07:06:12 -66.3 Dark Up 71.8 130.9 Up 06:59:19 - 07:13:06 782
Chiloquin 07:06:15 -67.2 Dark Up 72.4 126.9 Up 06:59:21 - 07:13:08 646
Klamath Falls 07:06:15 -67.5 Dark Up 72.7 126.2 Up 06:59:21 - 07:13:08 608
Cedarville 07:06:10 -68.8 Dark Up 74.0 127.7 Up 06:59:16 - 07:13:03 515
Fall River/Burney 07:06:14 -68.6 Dark Up 73.6 123.8 Up 06:59:21 - 07:13:08 477
Greenville 07:06:14 -69.5 Dark Up 74.4 122.0 Up 06:59:20 - 07:13:07 374
Gimple 07:06:13 -69.6 Dark Up 74.4 122.2 Up 06:59:20 - 07:13:07 373
Quincy 07:06:14 -69.7 Dark Up 74.5 121.4 Up 06:59:20 - 07:13:07 352
Portola 07:06:12 -70.0 Dark Up 74.9 122.0 Up 06:59:19 - 07:13:06 333
Reno 07:06:10 -70.5 Dark Up 75.4 122.6 Up 06:59:17 - 07:13:04 296
Dunrhomin 07:05:15 -73.1 Dark Up 80.5 180.7 Up 06:58:21 - 07:12:08 290
Nikitin 07:05:15 -73.3 Dark Up 80.7 180.6 Up 06:58:21 - 07:12:08 270
CU-SBO 07:05:15 -73.4 Dark Up 80.8 180.2 Up 06:58:22 - 07:12:09 263
Carson City 07:06:10 -70.8 Dark Up 75.6 121.5 Up 06:59:17 - 07:13:04 257
Gardnerville 07:06:10 -71.1 Dark Up 75.8 120.8 Up 06:59:17 - 07:13:04 230
Yerington 07:06:08 -71.3 Dark Up 76.1 122.2 Up 06:59:14 - 07:13:01 229
Hawthorne 07:06:06 -71.9 Dark Up 76.7 121.8 Up 06:59:13 - 07:13:00 173
Lee Vining 07:06:09 -72.1 Dark Up 76.7 118.7 Up 06:59:15 - 07:13:02 116
Bishop 07:06:06 -72.9 Dark Up 77.5 118.0 Up 06:59:13 - 07:13:00 43
Beatty 07:06:00 -74.1 Dark Up 78.8 120.0 Up 06:59:07 - 07:12:54 -23
Patrick 07:05:50 -76.6 Dark Up 81.6 121.0 Up 06:58:56 - 07:12:43 -211
Laughlin/Bullhead City 07:05:53 -76.5 Dark Up 81.2 117.4 Up 06:58:59 - 07:12:46 -232
Lake Havasu City 07:05:52 -77.2 Dark Up 81.7 114.1 Up 06:58:58 - 07:12:45 -308
Wildwood 07:06:09 -75.2 Dark Up 78.5 103.2 Up 06:59:16 - 07:13:03 -313
Idyllwild 07:06:02 -76.6 Dark Up 80.1 104.3 Up 06:59:08 - 07:12:55 -372
George/Scottsdale 07:05:42 -78.8 Dark Up 83.8 116.7 Up 06:58:49 - 07:12:36 -411
Calipatria 07:05:57 -77.7 Dark Up 81.2 102.8 Up 06:59:04 - 07:12:51 -450
Yuma 07:05:54 -78.5 Dark Up 82.0 101.4 Up 06:59:00 - 07:12:47 -505

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, (2026/12/22 07:08UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 21.43  48
Alnath         05:26:17.6 +28:36:23  1.6  9.20  17
PPM 071108     06:01:10.0 +31:02:04  6.0  1.38  25
PPM 071271     06:09:06.7 +31:15:55  8.1  0.61  27
PPM 071244     06:07:43.2 +30:41:11 10.0  0.09  26
523733         06:07:30.0 +30:45:59 16.0        26
Positions are for J2000

Event circumstances last updated at 2023/12/17 04:22:14 UT

Marc W. Buie, Southwest Research Institute

RECON