RECON: TNO occultation with 534074

Event between (534074) 14QZ441 and star GA1080:00225069 with event index number of 2244435

Geocentric closest approach at 2028/09/02 12:03:03 UTC

J2000 position of star is 02:08:47.7 +19:07:53
Equinox of date position of star is 02:10:06.9 +19:14:37
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 72 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=22.5

[RECON map]
Object is 43.5 AU from the Sun and 42.9 AU from the Earth.
Apparent velocity is 12.5 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 510 seconds.
The 1-sigma cross-track error in the shadow position is 4492 km.
The sky-plane scale is 31112.6 km/arcsec.

The object has an absolute magnitude Hv=6.0
Diameter=398.1 km assuming a 5% albedo -- 30.0 sec chord
Diameter=162.5 km assuming a 30% albedo -- 12.3 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 534074, (2028/09/02 12:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.1 +16:33:53  0.8 35.05 106
6Bet Ari       01:56:13.8 +20:56:49  2.6  3.72  70
15 Ari         02:12:13.3 +19:38:03  5.7  0.57  73
PPM 117969     02:09:20.8 +18:09:52  6.7  1.13  71
15 Ari         02:12:13.3 +19:38:03  5.7  0.57  73
PPM 117974     02:09:46.4 +19:22:50 10.9  0.18  72
534074         02:10:23.0 +19:15:59 16.9        72
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 1.8 sigma about the mid-time.
The median site spacing is 47.7 km RECON observability=0.5 and success probability=1.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 12:00:21 -3.5 CT Down 52.0 218.9 Up 11:45:21 - 12:15:21 12215
Kamloops 12:01:38 -12.1 AT Down 57.5 197.8 Up 11:46:38 - 12:16:38 12107
Kelowna 12:01:33 -12.0 AT Down 58.1 199.7 Up 11:46:33 - 12:16:33 12025
Peachland 12:01:34 -12.2 AT Down 58.2 199.3 Up 11:46:34 - 12:16:34 12016
Summerland 12:01:35 -12.2 AT Down 58.4 199.5 Up 11:46:35 - 12:16:35 12001
Penticton 12:01:35 -12.2 AT Down 58.4 199.7 Up 11:46:35 - 12:16:35 11994
Oliver 12:01:33 -12.4 AT Down 58.7 199.9 Up 11:46:33 - 12:16:33 11960
Anarchist Mountain Observatory 12:01:33 -12.3 AT Down 58.8 200.4 Up 11:46:33 - 12:16:33 11943
Victoria 12:01:56 -14.9 AT Up 60.1 193.4 Up 11:46:56 - 12:16:56 11917
Okanogan 12:01:34 -12.8 AT Up 59.5 200.3 Up 11:46:34 - 12:16:34 11880
Brewster 12:01:35 -13.0 AT Up 59.8 200.2 Up 11:46:35 - 12:16:35 11855
Manson/Chelan 12:01:37 -13.3 AT Up 60.1 199.6 Up 11:46:37 - 12:16:37 11836
Wenatchee 12:01:37 -13.6 AT Up 60.6 199.6 Up 11:46:37 - 12:16:37 11790
Ellensburg 12:01:40 -14.0 AT Up 61.0 199.4 Up 11:46:40 - 12:16:40 11751
Yakima 12:01:39 -14.2 AT Up 61.4 199.6 Up 11:46:39 - 12:16:39 11710
Toppenish/White Swan 12:01:39 -14.2 AT Up 61.5 200.1 Up 11:46:39 - 12:16:39 11688
PNWRO 12:01:29 -13.4 AT Up 61.5 203.1 Up 11:46:29 - 12:16:29 11644
The Dalles 12:01:44 -15.0 AT Up 62.5 199.1 Up 11:46:44 - 12:16:44 11615
Maupin 12:01:43 -15.1 AT Up 62.8 199.6 Up 11:46:43 - 12:16:43 11572
Sisters 12:01:44 -15.8 AT Up 63.8 199.1 Up 11:46:44 - 12:16:44 11487
Bend 12:01:44 -15.8 AT Up 63.9 199.8 Up 11:46:44 - 12:16:44 11461
Oregon Observatory 12:01:46 -16.0 AT Up 64.1 199.7 Up 11:46:46 - 12:16:46 11444
Chiloquin 12:01:47 -16.8 AT Up 65.5 199.8 Up 11:46:47 - 12:16:47 11313
Klamath Falls 12:01:47 -16.9 AT Up 65.8 200.2 Up 11:46:47 - 12:16:47 11277
Cedarville 12:01:35 -16.2 AT Up 66.0 204.2 Up 11:46:35 - 12:16:35 11196
Fall River/Burney 12:01:44 -17.2 AT Up 66.8 202.0 Up 11:46:44 - 12:16:44 11153
Greenville 12:01:42 -17.3 AT Up 67.5 203.9 Up 11:46:42 - 12:16:42 11056
Gimple 12:01:40 -17.3 AT Up 67.5 204.0 Up 11:46:40 - 12:16:40 11056
Quincy 12:01:42 -17.4 AT Up 67.7 204.1 Up 11:46:42 - 12:16:42 11035
Dunrhomin 11:59:59 -6.4 NT Down 60.0 232.5 Up 11:44:59 - 12:14:59 11033
Portola 12:01:38 -17.2 AT Up 67.6 205.3 Up 11:46:38 - 12:16:38 11019
Nikitin 11:59:58 -6.4 NT Down 60.2 232.7 Up 11:44:58 - 12:14:58 11013
CU-SBO 12:00:00 -6.5 NT Down 60.2 232.7 Up 11:45:00 - 12:15:00 11006
Reno 12:01:35 -16.8 AT Up 67.7 207.0 Up 11:46:35 - 12:16:35 10988
Carson City 12:01:34 -17.0 AT Up 68.0 207.5 Up 11:46:34 - 12:16:34 10950
Yerington 12:01:30 -16.6 AT Up 67.9 209.1 Up 11:46:30 - 12:16:30 10926
Gardnerville 12:01:33 -17.1 AT Up 68.2 207.9 Up 11:46:33 - 12:16:33 10924
Hawthorne 12:01:26 -16.5 AT Up 68.1 210.9 Up 11:46:26 - 12:16:26 10875
Lee Vining 12:01:30 -17.0 AT Up 68.8 210.5 Up 11:46:30 - 12:16:30 10818
Bishop 12:01:26 -16.8 AT Up 69.0 213.0 Up 11:46:26 - 12:16:26 10751
Beatty 12:01:14 -15.8 AT Up 68.7 217.3 Up 11:46:14 - 12:16:14 10694
Patrick 12:00:54 -14.2 AT Down 68.3 225.8 Up 11:45:54 - 12:15:54 10524
Laughlin/Bullhead City 12:00:58 -14.8 AT Up 68.8 224.8 Up 11:45:58 - 12:15:58 10500
Lake Havasu City 12:00:56 -14.9 AT Down 69.2 226.6 Up 11:45:56 - 12:15:56 10427
Wildwood 12:01:28 -18.2 Dark Up 71.8 217.9 Up 11:46:28 - 12:16:28 10402
Idyllwild 12:01:13 -16.9 AT Up 71.1 223.0 Up 11:46:13 - 12:16:13 10355
George/Scottsdale 12:00:38 -13.3 AT Down 68.1 232.7 Up 11:45:38 - 12:15:38 10337
Calipatria 12:01:04 -16.3 AT Up 70.8 226.8 Up 11:46:04 - 12:16:04 10284
Yuma 12:00:57 -15.7 AT Up 70.5 229.6 Up 11:45:57 - 12:15:57 10234

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 534074, (2028/09/02 12:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 35.05 106
6Bet Ari       01:54:38.6 +20:48:26  2.6  3.72  70
15 Ari         02:10:37.7 +19:30:01  5.7  0.57  73
PPM 117969     02:07:46.0 +18:01:46  6.7  1.13  71
15 Ari         02:10:37.7 +19:30:01  5.7  0.57  73
PPM 117974     02:08:11.0 +19:14:44 10.9  0.18  72
534074         02:08:47.7 +19:07:53 16.9        72
Positions are for J2000

Event circumstances last updated at 2023/10/28 00:51:58 UT

Marc W. Buie, Southwest Research Institute

RECON