RECON: TNO occultation with 523655

Event between (523655) 11VJ24 and star GA1120:03152965 with event index number of 2680641

Geocentric closest approach at 2029/01/17 11:13:09 UTC

J2000 position of star is 09:28:34.7 +23:32:17
Equinox of date position of star is 09:29:51.6 +23:26:22
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 163 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 32.0 AU from the Sun and 31.1 AU from the Earth.
The TNO is moving 22.7 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 171 seconds.
The 1-sigma cross-track error in the shadow position is 2539 km.
The sky-plane scale is 22541.9 km/arcsec.

The TNO has an absolute magnitude Hv=5.8
Diameter=411.2 km assuming a 5% albedo -- 18.1 sec chord
Diameter=167.9 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523655, (2029/01/17 11:13UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:55.1 +11:49:27  1.3 14.94 176
4Lam Leo       09:33:22.3 +22:50:18  4.3  0.92 164
PPM 099598     09:29:42.5 +23:09:25  8.4  0.28 163
PPM 099604     09:30:22.5 +23:40:39 10.0  0.27 163
523655         09:30:14.3 +23:24:37 15.4       163
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 22.0 km RECON observability=1.0 and success probability=20.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:12:24 -34.7 Dark Down 49.8 239.2 Up 10:57:39 - 11:27:09 1710
Kamloops 11:12:52 -43.6 Dark Down 57.6 221.7 Up 10:58:07 - 11:27:37 1116
Kelowna 11:12:48 -43.4 Dark Down 57.8 223.9 Up 10:58:03 - 11:27:33 1083
Peachland 11:12:48 -43.6 Dark Down 58.0 223.5 Up 10:58:03 - 11:27:33 1064
Summerland 11:12:47 -43.6 Dark Down 58.1 223.8 Up 10:58:02 - 11:27:32 1055
Penticton 11:12:47 -43.6 Dark Down 58.1 224.1 Up 10:58:02 - 11:27:32 1054
Oliver 11:12:46 -43.7 Dark Down 58.3 224.5 Up 10:58:01 - 11:27:31 1026
Anarchist Mountain Observatory 11:12:45 -43.7 Dark Down 58.4 225.0 Up 10:58:00 - 11:27:30 1019
Tonasket 11:12:44 -43.8 Dark Down 58.6 225.2 Up 10:57:59 - 11:27:29 992
Okanogan 11:12:44 -44.0 Dark Down 58.9 225.4 Up 10:57:59 - 11:27:29 959
Brewster 11:12:43 -44.2 Dark Down 59.2 225.4 Up 10:57:58 - 11:27:28 931
Manson/Chelan 11:12:44 -44.5 Dark Down 59.5 225.1 Up 10:57:59 - 11:27:29 901
Dunrhomin 11:11:42 -35.6 Dark Down 54.2 253.8 Up 10:56:57 - 11:26:27 879
Wenatchee 11:12:43 -44.8 Dark Down 60.0 225.4 Up 10:57:58 - 11:27:28 856
CU-SBO 11:11:41 -35.7 Dark Down 54.3 254.0 Up 10:56:56 - 11:26:26 855
Victoria 11:12:54 -46.3 Dark Down 60.5 219.2 Up 10:58:09 - 11:27:39 841
Ellensburg 11:12:43 -45.1 Dark Down 60.4 225.5 Up 10:57:58 - 11:27:28 814
PNWRO 11:12:35 -44.4 Dark Down 60.2 229.3 Up 10:57:50 - 11:27:20 792
Yakima 11:12:41 -45.3 Dark Down 60.7 226.0 Up 10:57:56 - 11:27:26 780
Toppenish/White Swan 11:12:40 -45.2 Dark Down 60.7 226.6 Up 10:57:55 - 11:27:25 768
Goldendale 11:12:40 -45.7 Dark Down 61.3 226.6 Up 10:57:55 - 11:27:25 707
The Dalles 11:12:40 -46.0 Dark Down 61.7 226.3 Up 10:57:55 - 11:27:25 675
Maupin 11:12:39 -46.1 Dark Down 61.9 227.1 Up 10:57:54 - 11:27:24 644
Sisters 11:12:38 -46.7 Dark Down 62.7 227.5 Up 10:57:53 - 11:27:23 551
Bend 11:12:36 -46.6 Dark Down 62.8 228.2 Up 10:57:51 - 11:27:21 541
Oregon Observatory 11:12:36 -46.7 Dark Down 63.0 228.3 Up 10:57:51 - 11:27:21 521
North Lake 11:12:33 -46.6 Dark Down 63.1 230.1 Up 10:57:48 - 11:27:18 486
Lakeview 11:12:29 -46.5 Dark Down 63.4 232.6 Up 10:57:44 - 11:27:14 416
Chiloquin 11:12:34 -47.4 Dark Down 64.1 229.6 Up 10:57:49 - 11:27:19 391
Cedarville 11:12:26 -46.5 Dark Down 63.7 233.9 Up 10:57:41 - 11:27:11 366
Klamath Falls 11:12:33 -47.5 Dark Down 64.2 230.2 Up 10:57:48 - 11:27:18 365
Fall River/Burney 11:12:29 -47.5 Dark Down 64.8 232.8 Up 10:57:44 - 11:27:14 276
Susanville 11:12:25 -47.2 Dark Down 64.7 235.0 Up 10:57:40 - 11:27:10 250
Gimple 11:12:24 -47.4 Dark Down 65.0 235.2 Up 10:57:39 - 11:27:09 217
Greenville 11:12:25 -47.4 Dark Down 65.0 235.0 Up 10:57:40 - 11:27:10 214
Reno 11:12:20 -46.7 Dark Down 64.6 237.8 Up 10:57:35 - 11:27:05 207
Portola 11:12:23 -47.2 Dark Down 64.9 236.3 Up 10:57:38 - 11:27:08 204
Quincy 11:12:24 -47.5 Dark Down 65.1 235.4 Up 10:57:39 - 11:27:09 196
Yerington 11:12:16 -46.4 Dark Down 64.5 239.7 Up 10:57:31 - 11:27:01 184
Tonopah 11:12:08 -45.0 Dark Down 63.6 244.1 Up 10:57:23 - 11:26:53 183
Carson City 11:12:19 -46.8 Dark Down 64.8 238.5 Up 10:57:34 - 11:27:04 176
Hawthorne 11:12:14 -46.0 Dark Down 64.4 241.3 Up 10:57:29 - 11:26:59 165
Gardnerville 11:12:18 -46.8 Dark Down 64.9 239.0 Up 10:57:33 - 11:27:03 156
Indian Springs 11:11:59 -44.1 Dark Down 63.1 248.6 Up 10:57:14 - 11:26:44 117
Henderson 11:11:56 -43.6 Dark Down 62.8 250.4 Up 10:57:11 - 11:26:41 100
Beatty 11:12:03 -44.9 Dark Down 63.8 246.8 Up 10:57:18 - 11:26:48 100
Lee Vining 11:12:13 -46.5 Dark Down 65.0 241.7 Up 10:57:28 - 11:26:58 95
Patrick 11:11:50 -42.7 Dark Down 62.2 252.7 Up 10:57:05 - 11:26:35 94
Bishop 11:12:09 -46.1 Dark Down 64.8 243.8 Up 10:57:24 - 11:26:54 72
Kingman/Dolan Springs 11:11:50 -42.9 Dark Down 62.4 252.9 Up 10:57:05 - 11:26:35 66
Laughlin/Bullhead City 11:11:52 -43.3 Dark Down 62.8 252.4 Up 10:57:07 - 11:26:37 41
George/Scottsdale 11:11:39 -41.2 Dark Down 61.0 257.6 Up 10:56:54 - 11:26:24 35
Mohave Valley 11:11:51 -43.3 Dark Down 62.9 253.0 Up 10:57:06 - 11:26:36 17
Lake Havasu City 11:11:49 -43.2 Dark Down 62.8 253.9 Up 10:57:04 - 11:26:34 -7
Parker 11:11:48 -43.2 Dark Down 62.9 254.6 Up 10:57:03 - 11:26:33 -37
Idyllwild 11:11:54 -45.2 Dark Down 64.9 253.0 Up 10:57:09 - 11:26:39 -181
Yuma 11:11:45 -43.5 Dark Down 63.5 257.1 Up 10:57:00 - 11:26:30 -182
Calipatria 11:11:49 -44.2 Dark Down 64.1 255.4 Up 10:57:04 - 11:26:34 -184
Wildwood 11:12:01 -46.7 Dark Down 66.2 250.1 Up 10:57:16 - 11:26:46 -232

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 523655, (2029/01/17 11:13UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 14.94 176
4Lam Leo       09:31:43.2 +22:58:04  4.3  0.92 164
PPM 099598     09:28:03.0 +23:17:05  8.4  0.28 163
PPM 099604     09:28:42.8 +23:48:20 10.0  0.27 163
523655         09:28:34.7 +23:32:17 15.4       163
Positions are for J2000

Event circumstances last updated at 2022/06/03 23:05:06 UT

Marc W. Buie, Southwest Research Institute

RECON