RECON: TNO occultation with 14UF228

Event between 14UF228 and star GA1180:00531506 with event index number of 2570120

Geocentric closest approach at 2027/11/21 05:30:51 UTC

J2000 position of star is 03:31:23.0 +29:18:44
Equinox of date position of star is 03:32:45.2 +29:23:14
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 94 degrees from the moon. Moon is 48% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 30.9 AU from the Sun and 29.9 AU from the Earth.
The TNO is moving 24.3 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 524 seconds.
The 1-sigma cross-track error in the shadow position is 5871 km.
The sky-plane scale is 21713.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=162.9 km assuming a 5% albedo -- 6.7 sec chord
Diameter=66.5 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14UF228, (2027/11/21 05:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.4 +16:33:48  0.8 19.58  81
44Zet Per      03:55:53.5 +31:57:51  2.8  5.53  89
PPM 092402     03:22:02.1 +29:08:51  4.5  2.42  96
PPM 068552     03:33:52.8 +30:05:56  8.2  0.71  94
PPM 092563     03:32:24.2 +29:19:57  9.2  0.17  94
14UF228        03:33:05.5 +29:24:20 14.0        93
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 1.7 sigma about the mid-time.
The median site spacing is 25.3 km RECON observability=1.0 and success probability=9.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:31:53 -49.3 Dark Down 58.9 121.8 Up 05:16:53 - 05:46:53 1238
Victoria 05:32:00 -48.9 Dark Down 58.2 114.9 Up 05:17:00 - 05:47:00 1153
Kelowna 05:31:53 -50.2 Dark Down 59.8 121.9 Up 05:16:53 - 05:46:53 1140
Peachland 05:31:53 -50.1 Dark Down 59.7 121.3 Up 05:16:53 - 05:46:53 1140
Summerland 05:31:54 -50.3 Dark Down 59.8 121.2 Up 05:16:54 - 05:46:54 1124
Penticton 05:31:54 -50.4 Dark Down 59.9 121.3 Up 05:16:54 - 05:46:54 1114
Oliver 05:31:54 -50.6 Dark Down 60.1 120.7 Up 05:16:54 - 05:46:54 1083
Anarchist Mountain Observatory 05:31:54 -50.8 Dark Down 60.3 120.7 Up 05:16:54 - 05:46:54 1062
Tonasket 05:31:55 -50.9 Dark Down 60.4 120.2 Up 05:16:55 - 05:46:55 1037
Okanogan 05:31:56 -51.1 Dark Down 60.5 119.5 Up 05:16:56 - 05:46:56 1012
Brewster 05:31:58 -51.1 Dark Down 60.5 118.8 Up 05:16:58 - 05:46:58 994
Manson/Chelan 05:31:59 -51.0 Dark Down 60.4 118.0 Up 05:16:59 - 05:46:59 987
Sleaford 05:31:14 -54.4 Dark Down 64.3 146.4 Up 05:16:14 - 05:46:14 982
Wenatchee 05:32:00 -51.2 Dark Down 60.5 117.0 Up 05:17:00 - 05:47:00 950
Ellensburg 05:32:00 -51.3 Dark Down 60.6 116.1 Up 05:17:00 - 05:47:00 921
Yakima 05:32:00 -51.5 Dark Down 60.7 115.4 Up 05:17:00 - 05:47:00 887
Toppenish/White Swan 05:32:00 -51.7 Dark Down 60.9 115.3 Up 05:17:00 - 05:47:00 862
Goldendale 05:32:00 -51.8 Dark Down 60.9 113.9 Up 05:17:00 - 05:47:00 834
The Dalles 05:32:00 -51.7 Dark Down 60.8 113.0 Up 05:17:00 - 05:47:00 833
Maupin 05:32:00 -51.9 Dark Down 61.0 112.5 Up 05:17:00 - 05:47:00 797
PNWRO 05:32:00 -52.8 Dark Down 62.0 116.6 Up 05:17:00 - 05:47:00 777
Sisters 05:32:00 -52.1 Dark Down 61.0 110.4 Up 05:17:00 - 05:47:00 762
Bend 05:32:00 -52.3 Dark Down 61.2 110.3 Up 05:17:00 - 05:47:00 733
Oregon Observatory 05:32:00 -52.3 Dark Down 61.2 109.9 Up 05:17:00 - 05:47:00 730
North Lake 05:32:00 -53.0 Dark Down 61.8 109.4 Up 05:17:00 - 05:47:00 662
Lakeview 05:32:00 -53.8 Dark Down 62.5 108.1 Up 05:17:00 - 05:47:00 574
Chiloquin 05:32:17 -52.7 Dark Down 61.4 107.2 Up 05:17:17 - 05:47:17 562
Cedarville 05:32:00 -54.3 Dark Down 62.8 107.1 Up 05:17:00 - 05:47:00 537
Klamath Falls 05:32:17 -52.9 Dark Down 61.5 106.7 Up 05:17:17 - 05:47:17 528
Fall River/Burney 05:32:19 -53.7 Dark Down 62.2 105.0 Up 05:17:19 - 05:47:19 405
Susanville 05:32:19 -54.5 Dark Down 62.9 104.6 Up 05:17:19 - 05:47:19 319
Greenville 05:32:20 -54.4 Dark Down 62.7 103.8 Up 05:17:20 - 05:47:20 304
Gimple 05:32:20 -54.4 Dark Down 62.8 103.8 Up 05:17:20 - 05:47:20 300
Quincy 05:32:20 -54.5 Dark Down 62.8 103.4 Up 05:17:20 - 05:47:20 284
Portola 05:32:19 -54.9 Dark Down 63.1 103.6 Up 05:17:19 - 05:47:19 255
Reno 05:32:18 -55.4 Dark Down 63.7 103.7 Up 05:17:18 - 05:47:18 206
Carson City 05:32:19 -55.6 Dark Down 63.8 103.1 Up 05:17:19 - 05:47:19 171
Gardnerville 05:32:19 -55.7 Dark Down 63.9 102.6 Up 05:17:19 - 05:47:19 146
Yerington 05:32:18 -56.1 Dark Down 64.3 103.3 Up 05:17:18 - 05:47:18 130
Hawthorne 05:32:17 -56.7 Dark Down 64.8 102.9 Up 05:17:17 - 05:47:17 66
Lee Vining 05:32:20 -56.6 Dark Down 64.6 101.2 Up 05:17:20 - 05:47:20 30
Bishop 05:32:19 -57.3 Dark Down 65.2 100.7 Up 05:17:19 - 05:47:19 -55
Dunrhomin 05:31:33 -64.1 Dark Down 73.5 126.8 Up 05:16:33 - 05:46:33 -195
CU-SBO 05:31:34 -64.2 Dark Down 73.6 125.9 Up 05:16:34 - 05:46:34 -218
Tonopah 05:32:00 -57.8 Dark Down 66.0 103.2 Up 05:17:00 - 05:47:00 -339
Wildwood 05:32:27 -58.4 Dark Down 65.5 93.4 Up 05:17:27 - 05:47:27 -367
Indian Springs 05:32:00 -59.6 Dark Down 67.5 101.4 Up 05:17:00 - 05:47:00 -379
Beatty 05:32:00 -58.7 Dark Down 66.6 101.1 Up 05:17:00 - 05:47:00 -398
Henderson 05:32:00 -60.3 Dark Down 68.1 100.8 Up 05:17:00 - 05:47:00 -413
Patrick 05:32:00 -61.4 Dark Down 69.1 100.3 Up 05:17:00 - 05:47:00 -464
Idyllwild 05:32:22 -60.0 Dark Down 67.1 93.9 Up 05:17:22 - 05:47:22 -473
Kingman/Dolan Springs 05:32:00 -61.4 Dark Down 69.0 99.5 Up 05:17:00 - 05:47:00 -490
Laughlin/Bullhead City 05:32:00 -61.0 Dark Down 68.6 99.0 Up 05:17:00 - 05:47:00 -499
Mohave Valley 05:32:00 -61.1 Dark Down 68.6 98.3 Up 05:17:00 - 05:47:00 -529
Lake Havasu City 05:32:00 -61.5 Dark Down 68.9 97.5 Up 05:17:00 - 05:47:00 -570
Calipatria 05:32:19 -61.1 Dark Down 68.1 93.2 Up 05:17:19 - 05:47:19 -578
Parker 05:32:00 -61.6 Dark Down 69.0 96.6 Up 05:17:00 - 05:47:00 -608
Yuma 05:32:17 -61.9 Dark Down 68.9 92.7 Up 05:17:17 - 05:47:17 -654
George/Scottsdale 05:32:00 -63.6 Dark Down 71.0 97.5 Up 05:17:00 - 05:47:00 -664

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 14UF228, (2027/11/21 05:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 19.58  81
44Zet Per      03:54:07.9 +31:53:01  2.8  5.53  89
PPM 092402     03:20:20.3 +29:02:54  4.5  2.42  96
PPM 068552     03:32:09.8 +30:00:22  8.2  0.71  94
PPM 092563     03:30:41.8 +29:14:20  9.2  0.17  94
14UF228        03:31:23.0 +29:18:44 14.0        94
Positions are for J2000

Event circumstances last updated at 2022/05/17 23:05:41 UT

Marc W. Buie, Southwest Research Institute

RECON