RECON: TNO occultation with 523734

Event between (523734) 14QV441 and star GA0840:00524564 with event index number of 2373149

Geocentric closest approach at 2027/11/30 06:44:33 UTC

J2000 position of star is 05:08:18.7 -04:51:17
Equinox of date position of star is 05:09:29.8 -04:49:31
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 145 degrees from the moon. Moon is 5% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 20.2 AU from the Sun and 19.3 AU from the Earth.
Apparent velocity is 22.4 km/sec on the sky relative to the star, or, 5.8 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is 899 km.
The sky-plane scale is 14031.5 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=106.7 km assuming a 5% albedo -- 4.8 sec chord
Diameter=43.5 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523734, (2027/11/30 06:47UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:52.8 -08:10:17  0.1  3.69 143
67Bet Eri      05:09:13.4 -05:03:08  2.8  0.26 145
66 Eri         05:08:08.5 -04:37:12  5.0  0.43 145
PPM 187743     05:09:55.6 -04:21:46  8.5  0.46 146
PPM 187749     05:10:17.5 -04:57:37  9.3  0.20 145
523734         05:09:41.4 -04:49:14 15.1       146
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 20.8 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:45:19 -58.3 Dark Down 29.8 148.4 Low 06:36:31 - 06:54:06 7415
Sleaford 06:44:35 -59.5 Dark Down 32.0 164.8 Up 06:35:48 - 06:53:23 7375
Kelowna 06:45:18 -59.3 Dark Down 30.7 149.1 Up 06:36:30 - 06:54:05 7361
Peachland 06:45:19 -59.3 Dark Down 30.7 148.7 Up 06:36:32 - 06:54:07 7357
Summerland 06:45:19 -59.5 Dark Down 30.9 148.8 Up 06:36:32 - 06:54:07 7348
Penticton 06:45:19 -59.5 Dark Down 31.0 148.9 Up 06:36:32 - 06:54:07 7343
Oliver 06:45:20 -59.9 Dark Down 31.3 148.8 Up 06:36:32 - 06:54:07 7322
Anarchist Mountain Observatory 06:45:20 -60.1 Dark Down 31.5 149.0 Up 06:36:32 - 06:54:07 7311
Victoria 06:45:32 -59.1 Dark Down 30.5 144.5 Up 06:36:45 - 06:54:20 7311
Okanogan 06:45:22 -60.6 Dark Down 32.0 148.5 Up 06:36:35 - 06:54:10 7273
Brewster 06:45:23 -60.7 Dark Down 32.1 148.2 Up 06:36:35 - 06:54:10 7258
Manson/Chelan 06:45:25 -60.8 Dark Down 32.2 147.7 Up 06:36:37 - 06:54:12 7248
Wenatchee 06:45:26 -61.1 Dark Down 32.5 147.4 Up 06:36:38 - 06:54:13 7220
Ellensburg 06:45:27 -61.4 Dark Down 32.8 147.0 Up 06:36:40 - 06:54:15 7196
Yakima 06:45:28 -61.7 Dark Down 33.1 146.9 Up 06:36:41 - 06:54:16 7171
Toppenish/White Swan 06:45:28 -62.0 Dark Down 33.4 147.0 Up 06:36:41 - 06:54:16 7156
PNWRO 06:45:24 -62.8 Dark Down 34.2 148.5 Up 06:36:37 - 06:54:12 7120
The Dalles 06:45:33 -62.3 Dark Down 33.7 145.8 Up 06:36:45 - 06:54:20 7112
Maupin 06:45:33 -62.7 Dark Down 34.1 145.8 Up 06:36:45 - 06:54:20 7084
Sisters 06:45:36 -63.2 Dark Down 34.7 144.9 Up 06:36:49 - 06:54:24 7030
Bend 06:45:36 -63.5 Dark Down 35.0 145.1 Up 06:36:48 - 06:54:23 7012
Oregon Observatory 06:45:36 -63.6 Dark Down 35.0 144.9 Up 06:36:49 - 06:54:24 7002
Chiloquin 06:45:41 -64.4 Dark Down 35.9 143.9 Up 06:36:53 - 06:54:28 6915
Klamath Falls 06:45:41 -64.7 Dark Down 36.3 143.8 Up 06:36:54 - 06:54:29 6891
Cedarville 06:45:37 -66.0 Dark Down 37.5 145.3 Up 06:36:50 - 06:54:25 6828
Fall River/Burney 06:45:42 -65.8 Dark Down 37.4 143.8 Up 06:36:55 - 06:54:30 6804
Greenville 06:45:43 -66.7 Dark Down 38.3 143.8 Up 06:36:55 - 06:54:30 6735
Gimple 06:45:43 -66.7 Dark Down 38.4 143.9 Up 06:36:55 - 06:54:30 6734
Quincy 06:45:43 -66.8 Dark Down 38.5 143.8 Up 06:36:56 - 06:54:31 6720
Portola 06:45:42 -67.2 Dark Down 38.8 144.2 Up 06:36:54 - 06:54:29 6707
Reno 06:45:40 -67.7 Dark Down 39.3 144.9 Up 06:36:53 - 06:54:28 6682
Carson City 06:45:42 -68.0 Dark Down 39.6 144.7 Up 06:36:54 - 06:54:29 6655
Gardnerville 06:45:42 -68.2 Dark Down 39.8 144.6 Up 06:36:54 - 06:54:29 6636
Yerington 06:45:40 -68.5 Dark Down 40.0 145.3 Up 06:36:53 - 06:54:28 6634
Hawthorne 06:45:38 -69.1 Dark Down 40.7 145.7 Up 06:36:51 - 06:54:26 6594
Dunrhomin 06:44:48 -71.3 Dark Down 43.5 163.2 Up 06:36:00 - 06:53:35 6583
Nikitin 06:44:48 -71.5 Dark Down 43.7 163.1 Up 06:36:01 - 06:53:36 6569
CU-SBO 06:44:48 -71.6 Dark Down 43.8 163.0 Up 06:36:01 - 06:53:36 6565
Lee Vining 06:45:41 -69.3 Dark Down 40.9 144.9 Up 06:36:53 - 06:54:28 6557
Bishop 06:45:39 -70.1 Dark Down 41.7 145.4 Up 06:36:52 - 06:54:27 6503
Beatty 06:45:35 -71.3 Dark Down 42.8 147.2 Up 06:36:47 - 06:54:22 6451
Patrick 06:45:27 -73.8 Dark Down 45.3 150.0 Up 06:36:39 - 06:54:14 6304
Laughlin/Bullhead City 06:45:30 -73.7 Dark Down 45.2 149.0 Up 06:36:42 - 06:54:17 6291
Wildwood 06:45:46 -72.3 Dark Down 44.3 143.5 Up 06:36:59 - 06:54:34 6246
Lake Havasu City 06:45:29 -74.4 Dark Down 45.9 149.0 Up 06:36:42 - 06:54:17 6234
Idyllwild 06:45:40 -73.7 Dark Down 45.5 145.5 Up 06:36:53 - 06:54:28 6198
George/Scottsdale 06:45:22 -76.1 Dark Down 47.6 151.8 Up 06:36:34 - 06:54:09 6143
Calipatria 06:45:37 -74.8 Dark Down 46.5 146.7 Up 06:36:49 - 06:54:24 6134
Yuma 06:45:34 -75.6 Dark Down 47.3 147.6 Up 06:36:46 - 06:54:21 6088

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 523734, (2027/11/30 06:47UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  3.69 143
67Bet Eri      05:07:50.8 -05:05:13  2.8  0.26 145
66 Eri         05:06:45.6 -04:39:19  5.0  0.43 145
PPM 187743     05:08:32.5 -04:23:49  8.5  0.46 146
PPM 187749     05:08:54.8 -04:59:39  9.3  0.20 145
523734         05:08:18.7 -04:51:17 15.1       145
Positions are for J2000

Event circumstances last updated at 2023/12/24 04:35:39 UT

Marc W. Buie, Southwest Research Institute

RECON