RECON: TNO occultation with 530839

Event between (530839) 11UK411 and star GA1040:00457913 with event index number of 2670467

Geocentric closest approach at 2029/01/12 08:41:11 UTC

J2000 position of star is 04:14:16.7 +14:56:18
Equinox of date position of star is 04:15:38.1 +14:59:51
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 159 degrees from the moon. Moon is 6% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 32.5 AU from the Sun and 31.8 AU from the Earth.
Apparent velocity is 14.8 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 185 seconds.
The 1-sigma cross-track error in the shadow position is 1158 km.
The sky-plane scale is 23067.2 km/arcsec.

The object has an absolute magnitude Hv=6.9
Diameter=245.5 km assuming a 5% albedo -- 16.8 sec chord
Diameter=100.2 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 530839, (2029/01/12 08:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:35.4 +16:33:56  0.8  5.44 164
44Zet Per      03:55:57.9 +31:58:03  2.8 17.56 157
48 Tau         04:17:25.4 +15:28:15  6.5  0.59 159
PPM 119711     04:15:10.1 +14:37:44  8.5  0.42 159
PPM 119726     04:16:04.2 +14:41:47  8.7  0.32 159
PPM 119719     04:15:45.6 +14:57:59 10.1  0.06 159
530839         04:15:55.3 +15:00:35 16.3       159
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 4.9 sigma about the mid-time.
The median site spacing is 31.2 km RECON observability=1.0 and success probability=99.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:36:31 -55.4 Dark Down 22.9 265.0 Low 08:21:31 - 08:51:31 577
Kamloops 08:36:55 -60.4 Dark Down 31.9 253.6 Up 08:21:55 - 08:51:55 269
Kelowna 08:36:49 -61.1 Dark Down 31.6 254.9 Up 08:21:49 - 08:51:49 208
Peachland 08:36:49 -61.2 Dark Down 31.8 254.7 Up 08:21:49 - 08:51:49 195
Summerland 08:36:48 -61.4 Dark Down 31.8 254.9 Up 08:21:48 - 08:51:48 183
Penticton 08:36:48 -61.4 Dark Down 31.8 255.0 Up 08:21:48 - 08:51:48 178
Oliver 08:36:46 -61.7 Dark Down 31.9 255.2 Up 08:21:46 - 08:51:46 147
Anarchist Mountain Observatory 08:36:45 -61.9 Dark Down 31.8 255.5 Up 08:21:45 - 08:51:45 135
Okanogan 08:36:43 -62.5 Dark Down 32.1 255.7 Up 08:21:43 - 08:51:43 74
Brewster 08:36:42 -62.8 Dark Down 32.3 255.7 Up 08:21:42 - 08:51:42 47
Victoria 08:36:54 -62.9 Dark Down 34.5 252.3 Up 08:21:54 - 08:51:54 43
Manson/Chelan 08:36:43 -63.1 Dark Down 32.6 255.5 Up 08:21:43 - 08:51:43 24
Wenatchee 08:36:41 -63.6 Dark Down 32.8 255.6 Up 08:21:41 - 08:51:41 -21
Ellensburg 08:36:40 -64.0 Dark Down 33.1 255.7 Up 08:21:40 - 08:51:40 -61
Yakima 08:36:39 -64.4 Dark Down 33.2 255.9 Up 08:21:39 - 08:51:39 -98
Toppenish/White Swan 08:36:37 -64.6 Dark Down 33.1 256.2 Up 08:21:37 - 08:51:37 -116
PNWRO 08:36:32 -64.7 Dark Down 32.2 257.6 Up 08:21:32 - 08:51:32 -131
The Dalles 08:36:37 -65.5 Dark Down 33.9 256.0 Up 08:21:37 - 08:51:37 -198
Maupin 08:36:35 -65.9 Dark Down 33.9 256.4 Up 08:21:35 - 08:51:35 -235
Sisters 08:36:33 -66.8 Dark Down 34.4 256.6 Up 08:21:33 - 08:51:33 -324
Bend 08:36:31 -67.0 Dark Down 34.3 256.9 Up 08:21:31 - 08:51:31 -343
Oregon Observatory 08:36:31 -67.2 Dark Down 34.5 256.9 Up 08:21:31 - 08:51:31 -361
Dunrhomin 08:35:36 -63.8 Dark Down 23.0 270.4 Low 08:20:36 - 08:50:36 -452
Nikitin 08:35:35 -63.9 Dark Down 23.0 270.5 Low 08:20:35 - 08:50:35 -470
CU-SBO 08:35:35 -64.0 Dark Down 23.1 270.5 Low 08:20:35 - 08:50:35 -477
Chiloquin 08:36:28 -68.6 Dark Down 35.0 257.5 Up 08:21:28 - 08:51:28 -491
Klamath Falls 08:36:26 -68.9 Dark Down 35.1 257.8 Up 08:21:26 - 08:51:26 -523
Cedarville 08:36:19 -69.2 Dark Down 34.1 259.5 Up 08:21:19 - 08:51:19 -569
Fall River/Burney 08:36:21 -70.0 Dark Down 35.0 258.9 Up 08:21:21 - 08:51:21 -632
Gimple 08:36:16 -70.7 Dark Down 34.8 259.9 Up 08:21:16 - 08:51:16 -714
Greenville 08:36:16 -70.7 Dark Down 34.9 259.8 Up 08:21:16 - 08:51:16 -715
Quincy 08:36:16 -70.9 Dark Down 34.9 259.9 Up 08:21:16 - 08:51:16 -734
Portola 08:36:14 -70.9 Dark Down 34.6 260.4 Up 08:21:14 - 08:51:14 -740
Reno 08:36:11 -71.0 Dark Down 34.1 261.0 Up 08:21:11 - 08:51:11 -757
Carson City 08:36:10 -71.4 Dark Down 34.2 261.3 Up 08:21:10 - 08:51:10 -792
Yerington 08:36:07 -71.3 Dark Down 33.7 261.8 Up 08:21:07 - 08:51:07 -802
Gardnerville 08:36:09 -71.6 Dark Down 34.2 261.5 Up 08:21:09 - 08:51:09 -815
Hawthorne 08:36:04 -71.6 Dark Down 33.4 262.5 Up 08:21:04 - 08:51:04 -840
Lee Vining 08:36:03 -72.3 Dark Down 33.9 262.5 Up 08:21:03 - 08:51:03 -903
Bishop 08:35:59 -72.6 Dark Down 33.4 263.4 Up 08:20:59 - 08:50:59 -952
Beatty 08:35:53 -72.3 Dark Down 32.1 264.8 Up 08:20:53 - 08:50:53 -974
Patrick 08:35:39 -72.1 Dark Down 30.0 267.4 Low 08:20:39 - 08:50:39 -1076
Laughlin/Bullhead City 08:35:41 -72.7 Dark Down 30.5 267.2 Up 08:20:41 - 08:50:41 -1112
Lake Havasu City 08:35:38 -73.0 Dark Down 30.4 267.7 Up 08:20:38 - 08:50:38 -1176
George/Scottsdale 08:35:29 -72.1 Dark Down 28.4 269.5 Low 08:20:29 - 08:50:29 -1212
Wildwood 08:35:50 -75.5 Dark Down 33.9 265.4 Up 08:20:50 - 08:50:50 -1285
Idyllwild 08:35:43 -74.9 Dark Down 32.4 266.8 Up 08:20:43 - 08:50:43 -1292
Calipatria 08:35:38 -74.7 Dark Down 31.4 267.8 Up 08:20:38 - 08:50:38 -1335
Yuma 08:35:33 -74.5 Dark Down 30.7 268.6 Up 08:20:33 - 08:50:33 -1364

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 530839, (2029/01/12 08:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  5.44 164
44Zet Per      03:54:07.9 +31:53:01  2.8 17.56 157
48 Tau         04:15:46.5 +15:24:01  6.5  0.59 159
PPM 119711     04:13:31.8 +14:33:25  8.5  0.42 159
PPM 119726     04:14:25.9 +14:37:30  8.7  0.32 159
PPM 119719     04:14:07.1 +14:53:41 10.1  0.06 159
530839         04:14:16.7 +14:56:18 16.3       159
Positions are for J2000

Event circumstances last updated at 2023/12/18 04:59:47 UT

Marc W. Buie, Southwest Research Institute

RECON