RECON: TNO occultation with 469420

Event between (469420) 01XP254 and star GA0980:03617779 with event index number of 2372089

Geocentric closest approach at 2028/11/07 11:24:48 UTC

J2000 position of star is 10:29:53.9 +08:03:19
Equinox of date position of star is 10:31:04.4 +07:56:23
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 51 degrees from the moon. Moon is 75% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 33.8 AU from the Sun and 34.1 AU from the Earth.
The TNO is moving 16.0 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 330 seconds.
The 1-sigma cross-track error in the shadow position is 2727 km.
The sky-plane scale is 24740.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=167.5 km assuming a 5% albedo -- 10.5 sec chord
Diameter=68.4 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 469420, (2028/11/07 11:25UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:54.4 +11:49:30  1.3  6.59  45
49 Leo         10:36:32.9 +08:30:02  5.6  1.40  52
PPM 156905     10:31:57.9 +06:54:37  7.9  1.01  51
PPM 156897     10:31:21.2 +07:53:42  8.7  0.02  51
469420         10:31:24.7 +07:54:24 15.8        51
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 2.7 sigma about the mid-time.
The median site spacing is 29.8 km RECON observability=1.0 and success probability=8.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:20:09 -26.3 Dark Up 32.1 122.5 Up 11:05:09 - 11:35:09 -4365
Kamloops 11:19:29 -35.5 Dark Up 24.5 108.3 Low 11:04:29 - 11:34:29 -4650
Kelowna 11:19:29 -35.2 Dark Up 25.3 108.7 Low 11:04:29 - 11:34:29 -4726
Peachland 11:19:28 -35.4 Dark Up 25.2 108.4 Low 11:04:28 - 11:34:28 -4739
Summerland 11:19:28 -35.4 Dark Up 25.3 108.4 Low 11:04:28 - 11:34:28 -4754
Penticton 11:19:28 -35.3 Dark Up 25.3 108.4 Low 11:04:28 - 11:34:28 -4760
Oliver 11:19:27 -35.5 Dark Up 25.5 108.3 Low 11:04:27 - 11:34:27 -4795
Anarchist Mountain Observatory 11:19:27 -35.4 Dark Up 25.6 108.4 Low 11:04:27 - 11:34:27 -4811
Tonasket 11:19:26 -35.5 Dark Up 25.7 108.2 Low 11:04:26 - 11:34:26 -4843
Okanogan 11:19:25 -35.7 Dark Up 25.7 107.9 Low 11:04:25 - 11:34:25 -4878
Victoria 11:19:17 -38.1 Dark Up 23.2 104.7 Low 11:04:17 - 11:34:17 -4886
Brewster 11:19:24 -35.9 Dark Up 25.6 107.6 Low 11:04:24 - 11:34:24 -4907
Manson/Chelan 11:19:23 -36.2 Dark Up 25.5 107.2 Low 11:04:23 - 11:34:23 -4931
Wenatchee 11:19:22 -36.5 Dark Up 25.5 106.8 Low 11:04:22 - 11:34:22 -4981
Ellensburg 11:19:20 -36.7 Dark Up 25.5 106.4 Low 11:04:20 - 11:34:20 -5025
Yakima 11:19:20 -36.9 Dark Up 25.6 106.2 Low 11:04:20 - 11:34:20 -5067
Toppenish/White Swan 11:19:19 -36.8 Dark Up 25.7 106.3 Low 11:04:19 - 11:34:19 -5088
PNWRO 11:19:23 -35.9 Dark Up 26.8 107.3 Low 11:04:23 - 11:34:23 -5115
Goldendale 11:19:18 -37.2 Dark Up 25.6 105.7 Low 11:04:18 - 11:34:18 -5149
The Dalles 11:19:16 -37.6 Dark Up 25.4 105.3 Low 11:04:16 - 11:34:16 -5175
Maupin 11:19:16 -37.6 Dark Up 25.6 105.2 Low 11:04:16 - 11:34:16 -5217
Sisters 11:19:13 -38.2 Dark Up 25.5 104.3 Low 11:04:13 - 11:34:13 -5313
Bend 11:19:14 -38.1 Dark Up 25.7 104.4 Low 11:04:14 - 11:34:14 -5336
Oregon Observatory 11:19:12 -38.2 Dark Up 25.7 104.3 Low 11:04:12 - 11:34:12 -5355
North Lake 11:19:13 -38.0 Dark Up 26.2 104.4 Low 11:04:13 - 11:34:13 -5419
Chiloquin 11:19:09 -38.8 Dark Up 25.7 103.3 Low 11:04:09 - 11:34:09 -5497
Lakeview 11:19:12 -37.8 Dark Up 26.8 104.3 Low 11:04:12 - 11:34:12 -5526
Klamath Falls 11:19:09 -38.8 Dark Up 25.8 103.2 Low 11:04:09 - 11:34:09 -5533
Dunrhomin 11:19:58 -26.5 Dark Up 38.4 115.8 Up 11:04:58 - 11:34:58 -5539
CU-SBO 11:19:59 -26.6 Dark Up 38.4 115.6 Up 11:04:59 - 11:34:59 -5567
Cedarville 11:19:12 -37.8 Dark Up 27.1 104.1 Low 11:04:12 - 11:34:12 -5594
Fall River/Burney 11:19:08 -38.8 Dark Up 26.3 102.9 Low 11:04:08 - 11:34:08 -5655
Susanville 11:19:10 -38.4 Dark Up 27.0 103.2 Low 11:04:10 - 11:34:10 -5717
Gimple 11:19:09 -38.6 Dark Up 26.9 102.9 Low 11:04:09 - 11:34:09 -5748
Greenville 11:19:09 -38.7 Dark Up 26.9 102.8 Low 11:04:09 - 11:34:09 -5749
Quincy 11:19:08 -38.7 Dark Up 26.9 102.7 Low 11:04:08 - 11:34:08 -5770
Portola 11:19:09 -38.4 Dark Up 27.3 103.0 Low 11:04:09 - 11:34:09 -5780
Reno 11:19:10 -37.9 Dark Up 27.9 103.4 Low 11:04:10 - 11:34:10 -5803
Carson City 11:19:10 -38.0 Dark Up 28.0 103.2 Low 11:04:10 - 11:34:10 -5842
Yerington 11:19:12 -37.5 Dark Up 28.5 103.5 Low 11:04:12 - 11:34:12 -5857
Gardnerville 11:19:09 -38.0 Dark Up 28.0 103.1 Low 11:04:09 - 11:34:09 -5868
Hawthorne 11:19:13 -37.2 Dark Up 29.0 103.7 Low 11:04:13 - 11:34:13 -5902
Tonopah 11:19:16 -36.1 Dark Up 30.2 104.5 Up 11:04:16 - 11:34:16 -5939
Lee Vining 11:19:11 -37.7 Dark Up 28.8 103.0 Low 11:04:11 - 11:34:11 -5967
Bishop 11:19:13 -37.2 Dark Up 29.5 103.2 Low 11:04:13 - 11:34:13 -6025
Beatty 11:19:17 -35.9 Dark Up 30.8 104.1 Up 11:04:17 - 11:34:17 -6059
Indian Springs 11:19:20 -35.1 Dark Up 31.8 104.7 Up 11:04:20 - 11:34:20 -6082
Henderson 11:19:23 -34.6 Dark Up 32.5 104.9 Up 11:04:23 - 11:34:23 -6132
Patrick 11:19:26 -33.7 Dark Up 33.5 105.3 Up 11:04:26 - 11:34:26 -6186
Kingman/Dolan Springs 11:19:25 -33.9 Dark Up 33.4 105.1 Up 11:04:25 - 11:34:25 -6212
Laughlin/Bullhead City 11:19:23 -34.3 Dark Up 33.0 104.7 Up 11:04:23 - 11:34:23 -6221
Mohave Valley 11:19:22 -34.3 Dark Up 33.1 104.5 Up 11:04:22 - 11:34:22 -6251
Lake Havasu City 11:19:23 -34.1 Dark Up 33.4 104.4 Up 11:04:23 - 11:34:23 -6291
Parker 11:19:23 -34.1 Dark Up 33.5 104.2 Up 11:04:23 - 11:34:23 -6329
George/Scottsdale 11:19:32 -32.1 Dark Up 35.6 105.7 Up 11:04:32 - 11:34:32 -6342
Wildwood 11:19:09 -37.7 Dark Up 30.0 101.2 Low 11:04:09 - 11:34:09 -6382
Idyllwild 11:19:14 -36.2 Dark Up 31.6 102.3 Up 11:04:14 - 11:34:14 -6402
Calipatria 11:19:21 -35.2 Dark Up 32.7 102.7 Up 11:04:21 - 11:34:21 -6454
Yuma 11:19:21 -34.4 Dark Up 33.6 103.1 Up 11:04:21 - 11:34:21 -6490

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 469420, (2028/11/07 11:25UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  6.59  45
49 Leo         10:35:02.1 +08:39:01  5.6  1.40  52
PPM 156905     10:30:27.4 +07:03:32  7.9  1.01  51
PPM 156897     10:29:50.5 +08:02:37  8.7  0.02  51
469420         10:29:53.9 +08:03:19 15.8        51
Positions are for J2000

Event circumstances last updated at 2022/05/30 23:01:12 UT

Marc W. Buie, Southwest Research Institute

RECON