RECON: TNO occultation with 13UE15

Event between 13UE15 and star GA1180:03024138 with event index number of 2646070

Geocentric closest approach at 2028/12/17 05:41:53 UTC

J2000 position of star is 07:39:19.4 +28:31:16
Equinox of date position of star is 07:40:43.1 +28:28:06
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 27.8 AU from the Sun and 26.9 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 409 seconds.
The 1-sigma cross-track error in the shadow position is 2153 km.
The sky-plane scale is 19518.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=121.9 km assuming a 5% albedo -- 5.8 sec chord
Diameter=49.8 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13UE15, (2028/12/17 05:42UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:05.4 +27:57:14  1.1  1.41 165
75Sig Gem      07:45:07.0 +28:48:41  5.3  0.95 166
PPM 097715     07:37:12.3 +28:33:43  7.5  0.87 167
PPM 097797     07:41:03.0 +28:42:31  9.8  0.26 167
PPM 097794     07:40:51.7 +28:27:24 11.2  0.06 167
13UE15         07:41:07.5 +28:27:10 14.6       166
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 2.2 sigma about the mid-time.
The median site spacing is 26.6 km RECON observability=1.0 and success probability=8.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:45:21 -52.6 Dark Down 38.8 90.8 Up 05:30:21 - 06:00:21 5492
Kelowna 05:45:22 -53.5 Dark Down 39.4 90.9 Up 05:30:22 - 06:00:22 5394
Sleaford 05:44:47 -57.9 Dark Down 47.5 104.5 Up 05:29:47 - 05:59:47 5392
Peachland 05:45:23 -53.4 Dark Down 39.2 90.6 Up 05:30:23 - 06:00:23 5389
Summerland 05:45:22 -53.6 Dark Down 39.3 90.5 Up 05:30:22 - 06:00:22 5373
Penticton 05:45:22 -53.7 Dark Down 39.3 90.5 Up 05:30:22 - 06:00:22 5364
Victoria 05:45:32 -52.0 Dark Down 36.8 86.9 Up 05:30:32 - 06:00:32 5350
Oliver 05:45:24 -53.9 Dark Down 39.3 90.3 Up 05:30:24 - 06:00:24 5329
Anarchist Mountain Observatory 05:45:23 -54.1 Dark Down 39.5 90.3 Up 05:30:23 - 06:00:23 5308
Tonasket 05:45:25 -54.2 Dark Down 39.4 90.0 Up 05:30:25 - 06:00:25 5279
Okanogan 05:45:25 -54.3 Dark Down 39.3 89.6 Up 05:30:25 - 06:00:25 5249
Brewster 05:45:27 -54.3 Dark Down 39.2 89.2 Up 05:30:27 - 06:00:27 5226
Manson/Chelan 05:45:28 -54.2 Dark Down 39.0 88.8 Up 05:30:28 - 06:00:28 5214
Wenatchee 05:45:29 -54.4 Dark Down 38.8 88.3 Up 05:30:29 - 06:00:29 5170
Ellensburg 05:45:32 -54.5 Dark Down 38.7 87.8 Up 05:30:32 - 06:00:32 5134
Yakima 05:45:32 -54.7 Dark Down 38.6 87.5 Up 05:30:32 - 06:00:32 5094
Toppenish/White Swan 05:45:32 -54.9 Dark Down 38.8 87.4 Up 05:30:32 - 06:00:32 5068
Goldendale 05:45:34 -54.9 Dark Down 38.4 86.7 Up 05:30:34 - 06:00:34 5023
The Dalles 05:45:35 -54.8 Dark Down 38.2 86.2 Up 05:30:35 - 06:00:35 5009
PNWRO 05:45:29 -56.0 Dark Down 39.8 88.1 Up 05:30:29 - 06:00:29 4998
Maupin 05:45:36 -55.0 Dark Down 38.2 86.0 Up 05:30:36 - 06:00:36 4964
Sisters 05:45:40 -55.1 Dark Down 37.8 85.0 Up 05:30:40 - 06:00:40 4887
Bend 05:45:39 -55.4 Dark Down 38.0 85.0 Up 05:30:39 - 06:00:39 4857
Oregon Observatory 05:45:40 -55.4 Dark Down 37.9 84.8 Up 05:30:40 - 06:00:40 4843
North Lake 05:45:40 -56.0 Dark Down 38.2 84.6 Up 05:30:40 - 06:00:40 4765
Chiloquin 05:45:43 -55.6 Dark Down 37.4 83.5 Up 05:30:43 - 06:00:43 4719
Klamath Falls 05:45:44 -55.8 Dark Down 37.5 83.3 Up 05:30:44 - 06:00:44 4682
Lakeview 05:45:41 -56.8 Dark Down 38.5 84.1 Up 05:30:41 - 06:00:41 4643
Cedarville 05:45:41 -57.2 Dark Down 38.6 83.7 Up 05:30:41 - 06:00:41 4571
Fall River/Burney 05:45:45 -56.5 Dark Down 37.6 82.6 Up 05:30:45 - 06:00:45 4552
Susanville 05:45:44 -57.3 Dark Down 38.1 82.6 Up 05:30:44 - 06:00:44 4468
Greenville 05:45:46 -57.2 Dark Down 37.8 82.2 Up 05:30:46 - 06:00:46 4447
Gimple 05:45:46 -57.2 Dark Down 37.9 82.2 Up 05:30:46 - 06:00:46 4445
Quincy 05:45:47 -57.3 Dark Down 37.8 82.0 Up 05:30:47 - 06:00:47 4426
Portola 05:45:46 -57.6 Dark Down 38.1 82.2 Up 05:30:46 - 06:00:46 4401
Reno 05:45:45 -58.2 Dark Down 38.6 82.3 Up 05:30:45 - 06:00:45 4357
Carson City 05:45:45 -58.3 Dark Down 38.6 82.1 Up 05:30:45 - 06:00:45 4320
Gardnerville 05:45:46 -58.5 Dark Down 38.6 81.9 Up 05:30:46 - 06:00:46 4293
Yerington 05:45:44 -58.9 Dark Down 39.0 82.3 Up 05:30:44 - 06:00:44 4283
Hawthorne 05:45:44 -59.4 Dark Down 39.4 82.2 Up 05:30:44 - 06:00:44 4222
Lee Vining 05:45:46 -59.3 Dark Down 38.9 81.5 Up 05:30:46 - 06:00:46 4175
Dunrhomin 05:45:05 -67.3 Dark Down 49.7 91.8 Up 05:30:05 - 06:00:05 4140
Tonopah 05:45:41 -60.6 Dark Down 40.4 82.5 Up 05:30:41 - 06:00:41 4139
CU-SBO 05:45:05 -67.5 Dark Down 49.7 91.4 Up 05:30:05 - 06:00:05 4114
Bishop 05:45:45 -60.0 Dark Down 39.4 81.4 Up 05:30:45 - 06:00:45 4094
Beatty 05:45:41 -61.4 Dark Down 40.6 81.8 Up 05:30:41 - 06:00:41 4006
Indian Springs 05:45:39 -62.3 Dark Down 41.4 82.0 Up 05:30:39 - 06:00:39 3945
Henderson 05:45:38 -63.0 Dark Down 41.9 81.9 Up 05:30:38 - 06:00:38 3873
Patrick 05:45:36 -64.1 Dark Down 42.7 81.9 Up 05:30:36 - 06:00:36 3781
Laughlin/Bullhead City 05:45:38 -63.6 Dark Down 42.1 81.3 Up 05:30:38 - 06:00:38 3770
Kingman/Dolan Springs 05:45:36 -64.0 Dark Down 42.5 81.6 Up 05:30:36 - 06:00:36 3761
Wildwood 05:45:50 -60.8 Dark Down 38.7 78.7 Up 05:30:50 - 06:00:50 3755
Mohave Valley 05:45:38 -63.7 Dark Down 42.1 81.1 Up 05:30:38 - 06:00:38 3741
Lake Havasu City 05:45:38 -64.0 Dark Down 42.2 80.8 Up 05:30:38 - 06:00:38 3693
Idyllwild 05:45:46 -62.4 Dark Down 40.1 79.2 Up 05:30:46 - 06:00:46 3669
Parker 05:45:38 -64.2 Dark Down 42.2 80.5 Up 05:30:38 - 06:00:38 3654
Calipatria 05:45:44 -63.5 Dark Down 41.0 79.1 Up 05:30:44 - 06:00:44 3575
George/Scottsdale 05:45:32 -66.2 Dark Down 44.1 81.2 Up 05:30:32 - 06:00:32 3555
Yuma 05:45:42 -64.3 Dark Down 41.6 79.1 Up 05:30:42 - 06:00:42 3507

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 13UE15, (2028/12/17 05:42UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  1.41 165
75Sig Gem      07:43:18.8 +28:52:56  5.3  0.95 166
PPM 097715     07:35:24.0 +28:37:40  7.5  0.87 167
PPM 097797     07:39:14.7 +28:46:37  9.8  0.26 167
PPM 097794     07:39:03.6 +28:31:29 11.2  0.06 167
13UE15         07:39:19.4 +28:31:16 14.6       167
Positions are for J2000

Event circumstances last updated at 2022/06/01 23:43:20 UT

Marc W. Buie, Southwest Research Institute

RECON