RECON: TNO occultation with 534161

Event between (534161) 14RQ63 and star GA1080:01426986 with event index number of 2175511

Geocentric closest approach at 2028/02/26 03:33:01 UTC

J2000 position of star is 05:51:43.5 +18:48:51
Equinox of date position of star is 05:53:01.5 +18:49:06
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 31.7 AU from the Sun and 31.3 AU from the Earth.
The TNO is moving 6.4 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 807 seconds.
The 1-sigma cross-track error in the shadow position is 5303 km.
The sky-plane scale is 22735.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 32.0 sec chord
Diameter=85.3 km assuming a 30% albedo -- 13.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 534161, (2028/02/26 03:12UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:41.8 +07:24:36  0.4 11.44 105
Alhena         06:39:20.3 +16:22:22  1.9 11.22 115
PPM 121513     05:54:03.5 +19:52:21  6.4  1.07 104
PPM 121481     05:52:43.8 +18:33:25  8.0  0.30 104
PPM 121520     05:54:21.3 +18:54:57  8.9  0.25 104
534161         05:53:22.9 +18:49:09 15.8       104
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 1.1 sigma about the mid-time.
The median site spacing is 19.1 km RECON observability=1.0 and success probability=10.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 03:35:02 -27.8 Dark Down 54.6 205.8 Up 03:20:02 - 03:50:02 -124
Kamloops 03:37:00 -19.9 Dark Down 58.1 182.7 Up 03:22:00 - 03:52:00 -723
Kelowna 03:36:47 -20.6 Dark Down 58.9 184.3 Up 03:21:47 - 03:51:47 -761
Peachland 03:36:49 -20.4 Dark Down 59.0 183.8 Up 03:21:49 - 03:51:49 -780
Summerland 03:36:47 -20.5 Dark Down 59.2 183.9 Up 03:21:47 - 03:51:47 -790
Penticton 03:36:46 -20.6 Dark Down 59.2 184.1 Up 03:21:46 - 03:51:46 -792
Oliver 03:36:43 -20.6 Dark Down 59.6 184.1 Up 03:21:43 - 03:51:43 -821
Anarchist Mountain Observatory 03:36:40 -20.8 Dark Down 59.7 184.5 Up 03:21:40 - 03:51:40 -829
Tonasket 03:36:39 -20.8 Dark Down 60.1 184.4 Up 03:21:39 - 03:51:39 -858
Okanogan 03:36:37 -20.8 Dark Down 60.4 184.2 Up 03:21:37 - 03:51:37 -892
Brewster 03:36:39 -20.7 Dark Down 60.7 183.8 Up 03:21:39 - 03:51:39 -922
Manson/Chelan 03:36:40 -20.5 Dark Down 60.9 183.1 Up 03:21:40 - 03:51:40 -952
Wenatchee 03:36:37 -20.4 Dark Down 61.4 182.8 Up 03:21:37 - 03:51:37 -999
Victoria 03:37:16 -18.3 Dark Down 60.3 177.1 Up 03:22:16 - 03:52:16 -1006
Dunrhomin 03:33:04 -32.1 Dark Down 64.7 216.8 Up 03:18:04 - 03:48:04 -1016
Ellensburg 03:36:39 -20.4 Dark Down 61.8 182.4 Up 03:21:39 - 03:51:39 -1042
PNWRO 03:36:15 -21.6 Dark Down 62.7 185.7 Up 03:21:15 - 03:51:15 -1070
Yakima 03:36:35 -20.4 Dark Down 62.2 182.4 Up 03:21:35 - 03:51:35 -1078
Toppenish/White Swan 03:36:32 -20.5 Dark Down 62.4 182.7 Up 03:21:32 - 03:51:32 -1091
Goldendale 03:36:34 -20.3 Dark Down 63.0 181.9 Up 03:21:34 - 03:51:34 -1155
The Dalles 03:36:35 -20.1 Dark Down 63.2 181.2 Up 03:21:35 - 03:51:35 -1188
Maupin 03:36:30 -20.2 Dark Down 63.6 181.4 Up 03:21:30 - 03:51:30 -1221
Sisters 03:36:32 -20.0 Dark Down 64.5 180.3 Up 03:21:32 - 03:51:32 -1317
Bend 03:36:25 -20.2 Dark Down 64.8 180.9 Up 03:21:25 - 03:51:25 -1329
Oregon Observatory 03:36:27 -20.1 Dark Down 64.9 180.6 Up 03:21:27 - 03:51:27 -1349
North Lake 03:36:16 -20.6 Dark Down 65.6 181.7 Up 03:21:16 - 03:51:16 -1387
Lakeview 03:36:04 -21.1 Dark Down 66.6 183.0 Up 03:21:04 - 03:51:04 -1462
Chiloquin 03:36:23 -20.0 Dark Down 66.2 179.6 Up 03:21:23 - 03:51:23 -1484
Klamath Falls 03:36:19 -20.1 Dark Down 66.6 179.7 Up 03:21:19 - 03:51:19 -1512
Cedarville 03:35:57 -21.3 Dark Down 67.3 183.5 Up 03:20:57 - 03:50:57 -1515
Fall River/Burney 03:36:07 -20.4 Dark Down 67.8 180.6 Up 03:21:07 - 03:51:07 -1606
Susanville 03:35:55 -21.0 Dark Down 68.4 182.4 Up 03:20:55 - 03:50:55 -1635
Gimple 03:35:56 -20.9 Dark Down 68.7 181.9 Up 03:20:56 - 03:50:56 -1669
Greenville 03:35:54 -20.8 Dark Down 68.7 181.6 Up 03:20:54 - 03:50:54 -1672
Reno 03:35:39 -21.7 Dark Down 69.2 184.5 Up 03:20:39 - 03:50:39 -1683
Portola 03:35:47 -21.2 Dark Down 69.0 182.8 Up 03:20:47 - 03:50:47 -1684
Quincy 03:35:54 -20.8 Dark Down 68.9 181.6 Up 03:20:54 - 03:50:54 -1691
Yerington 03:35:26 -22.2 Dark Down 69.7 186.3 Up 03:20:26 - 03:50:26 -1709
Carson City 03:35:37 -21.8 Dark Down 69.6 184.6 Up 03:20:37 - 03:50:37 -1715
Tonopah 03:34:59 -23.8 Dark Down 70.4 191.7 Up 03:19:59 - 03:49:59 -1716
Hawthorne 03:35:19 -22.7 Dark Down 70.1 187.8 Up 03:20:19 - 03:50:19 -1730
Gardnerville 03:35:35 -21.8 Dark Down 69.8 184.8 Up 03:20:35 - 03:50:35 -1736
Indian Springs 03:34:29 -25.1 Dark Down 71.6 196.8 Up 03:19:29 - 03:49:29 -1788
Lee Vining 03:35:20 -22.4 Dark Down 70.7 186.6 Up 03:20:20 - 03:50:20 -1802
Beatty 03:34:45 -24.2 Dark Down 71.5 193.6 Up 03:19:45 - 03:49:45 -1804
Henderson 03:34:17 -25.7 Dark Down 71.9 199.2 Up 03:19:17 - 03:49:17 -1808
Patrick 03:33:58 -26.6 Dark Down 72.2 202.9 Up 03:18:58 - 03:48:58 -1818
Bishop 03:35:08 -23.0 Dark Down 71.3 188.8 Up 03:20:08 - 03:50:08 -1828
Kingman/Dolan Springs 03:34:00 -26.5 Dark Down 72.5 202.7 Up 03:19:00 - 03:49:00 -1846
Laughlin/Bullhead City 03:34:06 -26.1 Dark Down 72.6 201.2 Up 03:19:06 - 03:49:06 -1871
George/Scottsdale 03:33:22 -28.4 Dark Down 73.0 210.8 Up 03:18:22 - 03:48:22 -1884
Mohave Valley 03:34:04 -26.1 Dark Down 72.9 201.5 Up 03:19:04 - 03:49:04 -1896
Lake Havasu City 03:33:58 -26.3 Dark Down 73.2 202.7 Up 03:18:58 - 03:48:58 -1922
Parker 03:33:54 -26.4 Dark Down 73.5 203.2 Up 03:18:54 - 03:48:54 -1953
Idyllwild 03:34:21 -24.5 Dark Down 74.6 196.1 Up 03:19:21 - 03:49:21 -2096
Calipatria 03:34:01 -25.5 Dark Down 74.8 200.6 Up 03:19:01 - 03:49:01 -2102
Yuma 03:33:47 -26.3 Dark Down 75.0 204.1 Up 03:18:47 - 03:48:47 -2103
Wildwood 03:34:46 -23.0 Dark Down 74.5 189.6 Up 03:19:46 - 03:49:46 -2143

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 534161, (2028/02/26 03:12UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.44 105
Alhena         06:37:42.8 +16:23:57  1.9 11.22 115
PPM 121513     05:52:23.4 +19:52:04  6.4  1.07 104
PPM 121481     05:51:04.6 +18:33:05  8.0  0.30 104
PPM 121520     05:52:41.9 +18:54:41  8.9  0.25 104
534161         05:51:43.5 +18:48:51 15.8       104
Positions are for J2000

Event circumstances last updated at 2022/02/09 00:40:58 UT

Marc W. Buie, Southwest Research Institute

RECON