RECON: TNO occultation with 533561

Event between (533561) 14JN80 and star GA0780:09742265 with event index number of 2586788

Geocentric closest approach at 2028/06/21 11:00:25 UTC

J2000 position of star is 18:09:52.5 -10:03:08
Equinox of date position of star is 18:11:13.6 -10:02:46
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 155 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 37.3 AU from the Sun and 36.3 AU from the Earth.
Apparent velocity is 24.3 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 656 seconds.
The 1-sigma cross-track error in the shadow position is 3508 km.
The sky-plane scale is 26354.4 km/arcsec.

The object has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 11.8 sec chord
Diameter=117.7 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 533561, (2028/06/21 11:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.5 -26:29:33  0.9 28.83 176
35Eta Oph      17:12:00.8 -15:45:29  2.6 15.56 169
PPM 201392     18:07:40.5 -08:19:10  6.1  1.96 154
PPM 234074     18:09:52.1 -10:32:40  8.0  0.63 156
PPM 201474     18:12:16.3 -09:51:47  9.7  0.27 155
533561         18:11:26.8 -10:02:42 16.0       155
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 1.4 sigma about the mid-time.
The median site spacing is 58.4 km RECON observability=0.2 and success probability=5.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:58:22 -6.5 NT Up 19.2 224.2 Really Low 10:43:22 - 11:13:22 1056
Kelowna 10:58:18 -6.7 NT Up 19.4 225.2 Really Low 10:43:18 - 11:13:18 996
Peachland 10:58:19 -6.9 NT Up 19.6 224.9 Really Low 10:43:19 - 11:13:19 992
Summerland 10:58:19 -7.0 NT Up 19.7 225.1 Really Low 10:43:19 - 11:13:19 982
Sleaford 10:57:59 0.9 Sun up Up 11.4 236.7 Really Low 10:42:59 - 11:12:59 978
Penticton 10:58:18 -7.0 NT Up 19.7 225.2 Really Low 10:43:18 - 11:13:18 976
Victoria 10:58:25 -9.4 NT Up 22.1 221.9 Low 10:43:25 - 11:13:25 955
Oliver 10:58:17 -7.3 NT Up 19.9 225.3 Really Low 10:43:17 - 11:13:17 954
Anarchist Mountain Observatory 10:58:16 -7.3 NT Up 20.0 225.5 Really Low 10:43:16 - 11:13:16 941
Okanogan 10:58:15 -7.9 NT Up 20.5 225.5 Low 10:43:15 - 11:13:15 902
Brewster 10:58:15 -8.2 NT Up 20.8 225.3 Low 10:43:15 - 11:13:15 887
Manson/Chelan 10:58:16 -8.5 NT Up 21.1 225.1 Low 10:43:16 - 11:13:16 877
Wenatchee 10:58:15 -9.0 NT Up 21.5 225.0 Low 10:43:15 - 11:13:15 848
Ellensburg 10:58:15 -9.4 NT Up 21.9 224.9 Low 10:43:15 - 11:13:15 823
Yakima 10:58:14 -9.7 NT Up 22.2 225.0 Low 10:43:14 - 11:13:14 796
Toppenish/White Swan 10:58:13 -9.8 NT Up 22.3 225.3 Low 10:43:13 - 11:13:13 780
PNWRO 10:58:09 -9.4 NT Up 21.8 226.7 Low 10:43:09 - 11:13:09 737
The Dalles 10:58:14 -10.7 NT Up 23.3 224.7 Low 10:43:14 - 11:13:14 736
Maupin 10:58:12 -11.0 NT Up 23.5 225.0 Low 10:43:12 - 11:13:12 706
Sisters 10:58:12 -11.9 NT Down 24.4 224.8 Low 10:43:12 - 11:13:12 651
Bend 10:58:11 -12.0 NT Down 24.4 225.1 Low 10:43:11 - 11:13:11 631
Oregon Observatory 10:58:11 -12.2 AT Down 24.6 225.0 Low 10:43:11 - 11:13:11 620
Chiloquin 10:58:09 -13.4 AT Down 25.7 225.1 Low 10:43:09 - 11:13:09 531
Klamath Falls 10:58:09 -13.6 AT Down 25.9 225.3 Low 10:43:09 - 11:13:09 505
Cedarville 10:58:03 -13.4 AT Down 25.6 227.0 Low 10:43:03 - 11:13:03 433
Fall River/Burney 10:58:05 -14.3 AT Down 26.6 226.0 Low 10:43:05 - 11:13:05 412
Greenville 10:58:03 -14.8 AT Down 27.0 226.8 Low 10:43:03 - 11:13:03 338
Gimple 10:58:03 -14.8 AT Down 26.9 226.8 Low 10:43:03 - 11:13:03 336
Quincy 10:58:02 -15.0 AT Down 27.1 226.8 Low 10:43:02 - 11:13:02 322
Portola 10:58:01 -14.8 AT Down 26.9 227.3 Low 10:43:01 - 11:13:01 306
Reno 10:57:59 -14.7 AT Down 26.7 228.0 Low 10:42:59 - 11:12:59 277
Carson City 10:57:58 -15.0 AT Down 27.0 228.1 Low 10:42:58 - 11:12:58 249
Gardnerville 10:57:58 -15.1 AT Down 27.1 228.3 Low 10:42:58 - 11:12:58 229
Yerington 10:57:56 -14.8 AT Down 26.7 228.8 Low 10:42:56 - 11:12:56 225
Hawthorne 10:57:54 -14.9 AT Down 26.7 229.4 Low 10:42:54 - 11:12:54 182
Lee Vining 10:57:54 -15.5 AT Down 27.4 229.2 Low 10:42:54 - 11:12:54 144
Dunrhomin 10:57:27 -6.1 NT Up 17.3 239.8 Really Low 10:42:27 - 11:12:27 127
Nikitin 10:57:27 -6.2 NT Up 17.4 239.8 Really Low 10:42:27 - 11:12:27 113
CU-SBO 10:57:27 -6.3 NT Up 17.5 239.8 Really Low 10:42:27 - 11:12:27 109
Bishop 10:57:51 -15.6 AT Down 27.3 230.1 Low 10:42:51 - 11:12:51 86
Beatty 10:57:46 -15.1 AT Down 26.6 231.6 Low 10:42:46 - 11:12:46 25
Patrick 10:57:36 -14.5 AT Down 25.7 234.6 Low 10:42:36 - 11:12:36 -140
Laughlin/Bullhead City 10:57:38 -15.0 AT Down 26.3 234.1 Low 10:42:38 - 11:12:38 -150
Wildwood 10:57:47 -18.1 Dark Down 29.6 231.2 Low 10:42:47 - 11:12:47 -182
Lake Havasu City 10:57:36 -15.4 AT Down 26.5 234.6 Low 10:42:36 - 11:12:36 -211
Idyllwild 10:57:41 -17.3 AT Down 28.6 233.0 Low 10:42:41 - 11:12:41 -239
Calipatria 10:57:37 -17.0 AT Down 28.1 234.2 Low 10:42:37 - 11:12:37 -310
George/Scottsdale 10:57:29 -14.4 AT Down 25.3 236.8 Low 10:42:29 - 11:12:29 -315
Yuma 10:57:34 -16.8 AT Down 27.8 235.1 Low 10:42:34 - 11:12:34 -361

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 533561, (2028/06/21 11:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.83 176
35Eta Oph      17:10:22.7 -15:43:29  2.6 15.56 169
PPM 201392     18:06:07.4 -08:19:27  6.1  1.96 154
PPM 234074     18:08:17.5 -10:33:03  8.0  0.63 156
PPM 201474     18:10:42.1 -09:52:16  9.7  0.27 155
533561         18:09:52.5 -10:03:08 16.0       155
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:30:07 UT

Marc W. Buie, Southwest Research Institute

RECON