RECON: TNO occultation with 523731

Event between (523731) 14OK394 and star GA1080:00638570 with event index number of 2373325

Geocentric closest approach at 2027/11/29 06:00:56 UTC

J2000 position of star is 04:40:35.9 +18:34:15
Equinox of date position of star is 04:42:00.0 +18:36:57
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 169 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 37.6 AU from the Sun and 36.6 AU from the Earth.
Apparent velocity is 25.0 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 155 seconds.
The 1-sigma cross-track error in the shadow position is 1493 km.
The sky-plane scale is 26553.6 km/arcsec.

The object has an absolute magnitude Hv=6.2
Diameter=332.7 km assuming a 5% albedo -- 13.6 sec chord
Diameter=135.8 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 523731, (2027/11/29 06:09UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.5 +16:33:48  0.8  2.34 166
Alnath         05:28:03.5 +28:37:43  1.6 14.48 177
PPM 120015     04:35:10.1 +18:04:24  6.3  1.76 167
PPM 120096     04:40:08.8 +18:47:14  8.4  0.52 168
PPM 120141     04:43:00.5 +18:44:45  9.4  0.22 169
523731         04:42:13.6 +18:37:23 16.7       169
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 26.0 km RECON observability=1.0 and success probability=46.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:02:04 -54.0 Dark Down 49.1 129.8 Up 05:48:38 - 06:15:29 -23
Kelowna 06:02:04 -55.0 Dark Down 50.0 130.2 Up 05:48:38 - 06:15:29 -109
Peachland 06:02:05 -54.9 Dark Down 49.9 129.7 Up 05:48:39 - 06:15:30 -112
Summerland 06:02:05 -55.1 Dark Down 50.1 129.7 Up 05:48:39 - 06:15:30 -127
Penticton 06:02:04 -55.2 Dark Down 50.2 129.8 Up 05:48:39 - 06:15:30 -135
Victoria 06:02:16 -53.9 Dark Down 48.8 124.2 Up 05:48:50 - 06:15:41 -141
Sleaford 06:01:26 -57.8 Dark Down 53.7 150.7 Up 05:48:01 - 06:14:52 -154
Oliver 06:02:05 -55.4 Dark Down 50.4 129.4 Up 05:48:40 - 06:15:31 -165
Anarchist Mountain Observatory 06:02:05 -55.6 Dark Down 50.6 129.5 Up 05:48:40 - 06:15:31 -183
Okanogan 06:02:07 -56.0 Dark Down 50.9 128.6 Up 05:48:42 - 06:15:33 -234
Brewster 06:02:08 -56.0 Dark Down 51.0 128.1 Up 05:48:43 - 06:15:34 -253
Manson/Chelan 06:02:10 -56.0 Dark Down 50.9 127.5 Up 05:48:44 - 06:15:35 -264
Wenatchee 06:02:11 -56.2 Dark Down 51.1 126.8 Up 05:48:46 - 06:15:37 -302
Ellensburg 06:02:13 -56.4 Dark Down 51.2 126.1 Up 05:48:47 - 06:15:38 -333
Yakima 06:02:14 -56.6 Dark Down 51.5 125.7 Up 05:48:48 - 06:15:39 -368
Toppenish/White Swan 06:02:13 -56.9 Dark Down 51.7 125.7 Up 05:48:48 - 06:15:39 -391
The Dalles 06:02:17 -56.9 Dark Down 51.7 123.9 Up 05:48:52 - 06:15:43 -443
PNWRO 06:02:11 -57.9 Dark Down 52.7 127.2 Up 05:48:45 - 06:15:36 -455
Maupin 06:02:18 -57.3 Dark Down 52.0 123.6 Up 05:48:52 - 06:15:43 -482
Sisters 06:02:21 -57.5 Dark Down 52.2 122.1 Up 05:48:55 - 06:15:46 -550
Bend 06:02:21 -57.8 Dark Down 52.5 122.1 Up 05:48:55 - 06:15:46 -577
Oregon Observatory 06:02:21 -57.8 Dark Down 52.5 121.8 Up 05:48:56 - 06:15:47 -589
Chiloquin 06:02:26 -58.3 Dark Down 52.9 119.8 Up 05:49:00 - 06:15:51 -699
Klamath Falls 06:02:26 -58.5 Dark Down 53.1 119.5 Up 05:49:00 - 06:15:51 -733
Cedarville 06:02:23 -59.9 Dark Down 54.5 120.6 Up 05:48:58 - 06:15:49 -834
Fall River/Burney 06:02:27 -59.4 Dark Down 54.0 118.6 Up 05:49:02 - 06:15:53 -851
Greenville 06:02:28 -60.2 Dark Down 54.7 118.0 Up 05:49:03 - 06:15:54 -946
Gimple 06:02:28 -60.2 Dark Down 54.7 118.1 Up 05:49:02 - 06:15:53 -948
Quincy 06:02:28 -60.3 Dark Down 54.8 117.8 Up 05:49:03 - 06:15:54 -965
Portola 06:02:28 -60.7 Dark Down 55.2 118.1 Up 05:49:02 - 06:15:53 -988
Reno 06:02:26 -61.2 Dark Down 55.7 118.6 Up 05:49:01 - 06:15:52 -1029
Carson City 06:02:27 -61.4 Dark Down 55.9 118.1 Up 05:49:01 - 06:15:52 -1063
Gardnerville 06:02:27 -61.6 Dark Down 56.1 117.9 Up 05:49:02 - 06:15:53 -1088
Yerington 06:02:25 -61.9 Dark Down 56.4 118.6 Up 05:49:00 - 06:15:51 -1097
Hawthorne 06:02:25 -62.5 Dark Down 57.0 118.6 Up 05:48:59 - 06:15:50 -1154
Lee Vining 06:02:27 -62.5 Dark Down 56.9 117.3 Up 05:49:02 - 06:15:53 -1196
Dunrhomin 06:01:41 -68.7 Dark Down 63.9 141.1 Up 05:48:16 - 06:15:07 -1269
Bishop 06:02:26 -63.3 Dark Down 57.7 117.3 Up 05:49:01 - 06:15:52 -1272
Nikitin 06:01:42 -68.8 Dark Down 64.0 140.8 Up 05:48:16 - 06:15:07 -1287
CU-SBO 06:01:42 -68.9 Dark Down 64.0 140.6 Up 05:48:17 - 06:15:08 -1292
Beatty 06:02:22 -64.6 Dark Down 59.1 118.6 Up 05:48:56 - 06:15:47 -1356
Patrick 06:02:16 -67.4 Dark Down 61.8 120.0 Up 05:48:50 - 06:15:41 -1570
Laughlin/Bullhead City 06:02:19 -67.0 Dark Down 61.5 118.7 Up 05:48:53 - 06:15:44 -1578
Wildwood 06:02:32 -64.6 Dark Down 59.0 112.3 Up 05:49:07 - 06:15:58 -1588
Lake Havasu City 06:02:19 -67.6 Dark Down 62.0 117.9 Up 05:48:53 - 06:15:44 -1652
Idyllwild 06:02:28 -66.2 Dark Down 60.5 113.8 Up 05:49:02 - 06:15:53 -1670
Calipatria 06:02:24 -67.3 Dark Down 61.7 114.2 Up 05:48:59 - 06:15:50 -1761
George/Scottsdale 06:02:12 -69.7 Dark Down 64.1 119.9 Up 05:48:46 - 06:15:37 -1787
Yuma 06:02:23 -68.2 Dark Down 62.5 114.5 Up 05:48:57 - 06:15:48 -1826

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 523731, (2027/11/29 06:09UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  2.34 166
Alnath         05:26:17.6 +28:36:23  1.6 14.48 177
PPM 120015     04:33:33.0 +18:01:00  6.3  1.76 167
PPM 120096     04:38:31.0 +18:44:01  8.4  0.52 168
PPM 120141     04:41:22.7 +18:41:39  9.4  0.22 169
523731         04:40:35.9 +18:34:15 16.7       169
Positions are for J2000

Event circumstances last updated at 2024/01/09 04:40:35 UT

Marc W. Buie, Southwest Research Institute

RECON