RECON: TNO occultation with 534626

Event between (534626) 14UT224 and star GA1120:01347344 with event index number of 2162938

Geocentric closest approach at 2027/12/13 08:34:44 UTC

J2000 position of star is 05:38:41.8 +23:34:17
Equinox of date position of star is 05:40:11.3 +23:35:01
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 9 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 36.5 AU from the Sun and 35.5 AU from the Earth.
Apparent velocity is 24.7 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 284 seconds.
The 1-sigma cross-track error in the shadow position is 1754 km.
The sky-plane scale is 25779.4 km/arcsec.

The object has an absolute magnitude Hv=6.7
Diameter=280.6 km assuming a 5% albedo -- 11.3 sec chord
Diameter=114.5 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 534626, (2027/12/13 08:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.6 +16:33:48  0.8 16.33  12
Alnath         05:28:03.7 +28:37:43  1.6  5.75   6
PPM 094690     05:43:36.8 +23:20:16  6.5  0.78  10
PPM 094629     05:41:34.2 +24:14:19  7.4  0.71   9
PPM 094601     05:40:12.1 +23:43:28  9.8  0.15   9
534626         05:40:24.0 +23:35:07 14.1         9
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 3.2 sigma about the mid-time.
The median site spacing is 36.0 km RECON observability=1.0 and success probability=1.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:33:50 -55.7 Dark Up 57.8 215.3 Up 08:18:50 - 08:48:50 -3762
Kamloops 08:34:27 -61.4 Dark Up 62.6 190.8 Up 08:19:27 - 08:49:27 -3965
Kelowna 08:34:25 -62.0 Dark Up 63.3 192.9 Up 08:19:25 - 08:49:25 -4044
Peachland 08:34:25 -62.2 Dark Up 63.4 192.3 Up 08:19:25 - 08:49:25 -4056
Summerland 08:34:25 -62.3 Dark Up 63.5 192.6 Up 08:19:25 - 08:49:25 -4071
Penticton 08:34:24 -62.3 Dark Up 63.6 192.8 Up 08:19:24 - 08:49:24 -4077
Oliver 08:34:24 -62.7 Dark Up 63.9 193.0 Up 08:19:24 - 08:49:24 -4112
Anarchist Mountain Observatory 08:34:24 -62.8 Dark Up 64.1 193.5 Up 08:19:24 - 08:49:24 -4129
Victoria 08:34:36 -64.1 Dark Up 65.0 185.1 Up 08:19:36 - 08:49:36 -4181
Okanogan 08:34:25 -63.4 Dark Up 64.7 193.3 Up 08:19:25 - 08:49:25 -4195
Brewster 08:34:25 -63.7 Dark Up 65.0 193.0 Up 08:19:25 - 08:49:25 -4222
Manson/Chelan 08:34:26 -64.0 Dark Up 65.3 192.3 Up 08:19:26 - 08:49:26 -4244
Wenatchee 08:34:27 -64.5 Dark Up 65.8 192.2 Up 08:19:27 - 08:49:27 -4292
Ellensburg 08:34:27 -64.9 Dark Up 66.2 191.9 Up 08:19:27 - 08:49:27 -4335
Yakima 08:34:27 -65.3 Dark Up 66.6 192.0 Up 08:19:27 - 08:49:27 -4376
Toppenish/White Swan 08:34:27 -65.5 Dark Up 66.8 192.5 Up 08:19:27 - 08:49:27 -4398
PNWRO 08:34:22 -65.4 Dark Up 66.9 196.1 Up 08:19:22 - 08:49:22 -4434
The Dalles 08:34:28 -66.4 Dark Up 67.7 191.1 Up 08:19:28 - 08:49:28 -4479
Maupin 08:34:29 -66.8 Dark Up 68.1 191.5 Up 08:19:29 - 08:49:29 -4522
Sisters 08:34:30 -67.7 Dark Up 69.0 190.7 Up 08:19:30 - 08:49:30 -4614
Bend 08:34:29 -67.9 Dark Up 69.2 191.5 Up 08:19:29 - 08:49:29 -4638
Oregon Observatory 08:34:29 -68.1 Dark Up 69.4 191.3 Up 08:19:29 - 08:49:29 -4656
Chiloquin 08:34:31 -69.4 Dark Up 70.7 190.9 Up 08:19:31 - 08:49:31 -4794
Klamath Falls 08:34:30 -69.7 Dark Up 71.1 191.3 Up 08:19:30 - 08:49:30 -4830
Cedarville 08:34:25 -69.8 Dark Up 71.5 196.2 Up 08:19:25 - 08:49:25 -4902
Dunrhomin 08:33:35 -63.0 Dark Up 66.1 231.9 Up 08:18:35 - 08:48:35 -4951
Fall River/Burney 08:34:29 -70.7 Dark Up 72.1 193.1 Up 08:19:29 - 08:49:29 -4955
Nikitin 08:33:36 -63.1 Dark Up 66.2 232.2 Up 08:18:36 - 08:48:36 -4971
CU-SBO 08:33:35 -63.2 Dark Up 66.3 232.2 Up 08:18:35 - 08:48:35 -4978
Greenville 08:34:27 -71.3 Dark Up 72.9 195.1 Up 08:19:27 - 08:49:27 -5051
Gimple 08:34:27 -71.3 Dark Up 72.9 195.4 Up 08:19:27 - 08:49:27 -5051
Quincy 08:34:27 -71.5 Dark Up 73.1 195.3 Up 08:19:27 - 08:49:27 -5072
Portola 08:34:26 -71.4 Dark Up 73.2 196.9 Up 08:19:26 - 08:49:26 -5085
Reno 08:34:23 -71.4 Dark Up 73.3 199.1 Up 08:19:23 - 08:49:23 -5112
Carson City 08:34:23 -71.7 Dark Up 73.6 199.6 Up 08:19:23 - 08:49:23 -5151
Yerington 08:34:21 -71.6 Dark Up 73.6 201.8 Up 08:19:21 - 08:49:21 -5170
Gardnerville 08:34:23 -71.9 Dark Up 73.8 200.0 Up 08:19:23 - 08:49:23 -5177
Hawthorne 08:34:19 -71.8 Dark Up 73.9 204.0 Up 08:19:19 - 08:49:19 -5219
Lee Vining 08:34:21 -72.5 Dark Up 74.5 203.3 Up 08:19:21 - 08:49:21 -5281
Bishop 08:34:18 -72.6 Dark Up 74.8 206.5 Up 08:19:18 - 08:49:18 -5343
Beatty 08:34:12 -72.1 Dark Up 74.6 212.4 Up 08:19:12 - 08:49:12 -5388
Patrick 08:34:02 -71.4 Dark Up 74.4 224.0 Up 08:19:02 - 08:49:02 -5536
Laughlin/Bullhead City 08:34:04 -72.0 Dark Up 74.9 222.6 Up 08:19:04 - 08:49:04 -5567
Lake Havasu City 08:34:03 -72.2 Dark Up 75.3 225.1 Up 08:19:03 - 08:49:03 -5638
Wildwood 08:34:18 -75.1 Dark Up 77.8 212.4 Up 08:19:18 - 08:49:18 -5699
George/Scottsdale 08:33:54 -70.9 Dark Up 74.3 233.5 Up 08:18:54 - 08:48:54 -5708
Idyllwild 08:34:11 -74.2 Dark Up 77.2 220.0 Up 08:19:11 - 08:49:11 -5732
Calipatria 08:34:06 -73.8 Dark Up 76.9 225.6 Up 08:19:06 - 08:49:06 -5794
Yuma 08:34:03 -73.4 Dark Up 76.7 229.5 Up 08:19:03 - 08:49:03 -5836

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 534626, (2027/12/13 08:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 16.33  12
Alnath         05:26:17.6 +28:36:23  1.6  5.75   6
PPM 094690     05:41:54.8 +23:19:34  6.5  0.78  10
PPM 094629     05:39:51.5 +24:13:32  7.4  0.71   9
PPM 094601     05:38:29.8 +23:42:38  9.8  0.15   9
534626         05:38:41.8 +23:34:17 14.1         9
Positions are for J2000

Event circumstances last updated at 2024/06/23 21:27:38 UT

Marc W. Buie, Southwest Research Institute

RECON