RECON: TNO occultation with 511553

Event between (511553) 14UK225 and star GA1080:00362744 with event index number of 2242641

Geocentric closest approach at 2028/10/18 11:10:43 UTC

J2000 position of star is 03:22:32.0 +18:45:41
Equinox of date position of star is 03:23:55.9 +18:50:51
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 157 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=23.4

[RECON map]
Object is 38.1 AU from the Sun and 37.2 AU from the Earth.
Apparent velocity is 21.7 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 576 seconds.
The 1-sigma cross-track error in the shadow position is 4305 km.
The sky-plane scale is 26963.9 km/arcsec.

The object has an absolute magnitude Hv=7.6
Diameter=181.1 km assuming a 5% albedo -- 8.4 sec chord
Diameter=74.0 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 511553, (2028/10/18 11:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.6 +16:33:54  0.8 17.62 139
44Zet Per      03:55:57.0 +31:58:00  2.8 14.93 147
63Tau2Ari      03:24:25.1 +20:50:35  6.2  1.98 157
PPM 119020     03:22:13.1 +19:16:58  8.2  0.63 157
PPM 119045     03:25:18.2 +18:39:23  9.1  0.34 157
PPM 119040     03:24:49.5 +19:01:21 10.5  0.22 157
511553         03:24:10.7 +18:51:46 16.2       156
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 1.6 sigma about the mid-time.
The median site spacing is 35.9 km RECON observability=1.0 and success probability=12.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:08:06 -23.1 Dark Down 45.5 236.1 Up 10:53:06 - 11:23:06 3444
Kamloops 11:08:46 -32.0 Dark Down 53.0 219.1 Up 10:53:46 - 11:23:46 3398
Kelowna 11:08:43 -31.8 Dark Down 53.2 221.1 Up 10:53:43 - 11:23:43 3309
Peachland 11:08:44 -32.0 Dark Down 53.4 220.8 Up 10:53:44 - 11:23:44 3301
Summerland 11:08:44 -32.0 Dark Down 53.5 221.0 Up 10:53:44 - 11:23:44 3285
Penticton 11:08:43 -32.0 Dark Down 53.5 221.2 Up 10:53:43 - 11:23:43 3277
Oliver 11:08:43 -32.2 Dark Down 53.8 221.6 Up 10:53:43 - 11:23:43 3242
Anarchist Mountain Observatory 11:08:42 -32.1 Dark Down 53.8 222.0 Up 10:53:42 - 11:23:42 3223
Victoria 11:08:55 -34.7 Dark Down 55.9 216.5 Up 10:53:55 - 11:23:55 3219
Okanogan 11:08:43 -32.5 Dark Down 54.4 222.3 Up 10:53:43 - 11:23:43 3161
Brewster 11:08:43 -32.7 Dark Down 54.7 222.2 Up 10:53:43 - 11:23:43 3136
Manson/Chelan 11:08:45 -33.1 Dark Down 55.0 221.9 Up 10:53:45 - 11:23:45 3119
Wenatchee 11:08:45 -33.3 Dark Down 55.4 222.1 Up 10:53:45 - 11:23:45 3073
Ellensburg 11:08:46 -33.7 Dark Down 55.8 222.2 Up 10:53:46 - 11:23:46 3033
Yakima 11:08:45 -33.8 Dark Down 56.2 222.6 Up 10:53:45 - 11:23:45 2992
Toppenish/White Swan 11:08:45 -33.8 Dark Down 56.2 223.1 Up 10:53:45 - 11:23:45 2969
PNWRO 11:08:40 -33.0 Dark Down 55.8 225.6 Up 10:53:40 - 11:23:40 2915
The Dalles 11:08:47 -34.6 Dark Down 57.2 222.7 Up 10:53:47 - 11:23:47 2898
Maupin 11:08:47 -34.7 Dark Down 57.4 223.3 Up 10:53:47 - 11:23:47 2854
Sisters 11:08:49 -35.4 Dark Down 58.3 223.5 Up 10:53:49 - 11:23:49 2770
Bend 11:08:48 -35.3 Dark Down 58.4 224.2 Up 10:53:48 - 11:23:48 2743
Oregon Observatory 11:08:49 -35.5 Dark Down 58.5 224.2 Up 10:53:49 - 11:23:49 2726
Chiloquin 11:08:50 -36.3 Dark Down 59.7 225.1 Up 10:53:50 - 11:23:50 2595
Klamath Falls 11:08:50 -36.3 Dark Down 59.9 225.6 Up 10:53:50 - 11:23:50 2559
Cedarville 11:08:44 -35.5 Dark Down 59.5 228.9 Up 10:53:44 - 11:23:44 2467
Fall River/Burney 11:08:48 -36.5 Dark Down 60.5 227.7 Up 10:53:48 - 11:23:48 2431
Greenville 11:08:47 -36.5 Dark Down 60.8 229.6 Up 10:53:47 - 11:23:47 2330
Gimple 11:08:47 -36.5 Dark Down 60.8 229.7 Up 10:53:47 - 11:23:47 2329
Quincy 11:08:47 -36.6 Dark Down 61.0 229.9 Up 10:53:47 - 11:23:47 2309
Portola 11:08:45 -36.3 Dark Down 60.8 230.8 Up 10:53:45 - 11:23:45 2289
Reno 11:08:43 -35.9 Dark Down 60.6 232.1 Up 10:53:43 - 11:23:43 2253
Dunrhomin 11:07:53 -25.0 Dark Down 50.6 248.5 Up 10:52:53 - 11:22:53 2219
Carson City 11:08:43 -36.0 Dark Down 60.8 232.7 Up 10:53:43 - 11:23:43 2215
Nikitin 11:07:54 -25.0 Dark Down 50.6 248.7 Up 10:52:54 - 11:22:54 2199
CU-SBO 11:07:54 -25.1 Dark Down 50.7 248.7 Up 10:52:54 - 11:22:54 2193
Gardnerville 11:08:43 -36.1 Dark Down 60.9 233.1 Up 10:53:43 - 11:23:43 2189
Yerington 11:08:41 -35.6 Dark Down 60.5 233.8 Up 10:53:41 - 11:23:41 2187
Hawthorne 11:08:39 -35.4 Dark Down 60.4 235.3 Up 10:53:39 - 11:23:39 2131
Lee Vining 11:08:41 -35.9 Dark Down 61.1 235.4 Up 10:53:41 - 11:23:41 2077
Bishop 11:08:38 -35.5 Dark Down 60.9 237.3 Up 10:53:38 - 11:23:38 2005
Beatty 11:08:32 -34.4 Dark Down 60.1 240.2 Up 10:53:32 - 11:23:32 1937
Patrick 11:08:21 -32.5 Dark Down 58.7 245.8 Up 10:53:21 - 11:23:21 1748
Laughlin/Bullhead City 11:08:24 -33.1 Dark Down 59.3 245.4 Up 10:53:24 - 11:23:24 1728
Wildwood 11:08:39 -36.5 Dark Down 62.7 242.3 Up 10:53:39 - 11:23:39 1655
Lake Havasu City 11:08:23 -33.0 Dark Down 59.4 246.7 Up 10:53:23 - 11:23:23 1653
Idyllwild 11:08:32 -35.1 Dark Down 61.5 245.2 Up 10:53:32 - 11:23:32 1594
George/Scottsdale 11:08:14 -31.2 Dark Down 57.8 250.5 Up 10:53:14 - 11:23:14 1547
Calipatria 11:08:28 -34.3 Dark Down 60.8 247.6 Up 10:53:28 - 11:23:28 1515
Yuma 11:08:24 -33.6 Dark Down 60.3 249.3 Up 10:53:24 - 11:23:24 1459

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 511553, (2028/10/18 11:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.62 139
44Zet Per      03:54:07.9 +31:53:01  2.8 14.93 147
63Tau2Ari      03:22:45.2 +20:44:31  6.2  1.98 157
PPM 119020     03:20:34.2 +19:10:49  8.2  0.63 157
PPM 119045     03:23:39.6 +18:33:20  9.1  0.34 157
PPM 119040     03:23:10.6 +18:55:17 10.5  0.22 157
511553         03:22:32.0 +18:45:41 16.2       157
Positions are for J2000

Event circumstances last updated at 2024/06/25 21:30:20 UT

Marc W. Buie, Southwest Research Institute

RECON