RECON: TNO occultation with 469750

Event between (469750) 05PU21 and star GA0940:00068504 with event index number of 2255755

Geocentric closest approach at 2022/08/30 06:11:23 UTC

J2000 position of star is 00:44:30.0 +04:56:17
Equinox of date position of star is 00:45:37.8 +05:03:27
Stellar brightness G=12.3, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 177 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 34.7 AU from the Sun and 33.9 AU from the Earth.
The TNO is moving 17.9 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is 1354 km.
The sky-plane scale is 24581.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=303.4 km assuming a 5% albedo -- 16.9 sec chord
Diameter=123.9 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 469750, (2022/08/30 06:11UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:53.9 -29:30:06  1.2 43.02 140
Algenib        00:14:24.3 +15:18:34  2.8 12.81 164
96 G. Psc      00:49:34.4 +05:23:49  5.8  1.03 176
PPM 143847     00:46:14.7 +05:18:19  8.1  0.28 176
PPM 143845     00:46:12.7 +04:57:20 10.8  0.17 177
469750         00:45:40.2 +05:03:42 12.3       177
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 5.0 sigma about the mid-time.
The median site spacing is 12.4 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:12:32 -25.8 Dark Down 22.5 111.0 Low 06:05:11 - 06:19:53 9971
Victoria 06:12:33 -26.5 Dark Down 21.4 107.6 Low 06:05:12 - 06:19:54 9954
Peachland 06:12:33 -26.8 Dark Down 23.2 111.2 Low 06:05:12 - 06:19:54 9925
Kelowna 06:12:33 -26.8 Dark Down 23.3 111.5 Low 06:05:12 - 06:19:54 9923
Summerland 06:12:33 -26.9 Dark Down 23.3 111.2 Low 06:05:12 - 06:19:54 9918
Penticton 06:12:33 -27.0 Dark Down 23.4 111.3 Low 06:05:12 - 06:19:54 9913
Oliver 06:12:33 -27.3 Dark Down 23.5 111.1 Low 06:05:12 - 06:19:54 9900
Anarchist Mountain Observatory 06:12:33 -27.5 Dark Down 23.7 111.2 Low 06:05:12 - 06:19:54 9890
Tonasket 06:12:33 -27.8 Dark Down 23.8 111.1 Low 06:05:12 - 06:19:54 9879
Okanogan 06:12:33 -28.0 Dark Down 23.8 110.8 Low 06:05:12 - 06:19:54 9869
Manson/Chelan 06:12:33 -28.2 Dark Down 23.6 110.1 Low 06:05:12 - 06:19:54 9863
Brewster 06:12:33 -28.2 Dark Down 23.8 110.5 Low 06:05:12 - 06:19:54 9863
Wenatchee 06:12:33 -28.6 Dark Down 23.7 109.8 Low 06:05:12 - 06:19:54 9848
Ellensburg 06:12:33 -28.9 Dark Down 23.7 109.4 Low 06:05:12 - 06:19:54 9837
Yakima 06:12:33 -29.2 Dark Down 23.8 109.2 Low 06:05:12 - 06:19:54 9822
Toppenish/White Swan 06:12:33 -29.5 Dark Down 24.0 109.3 Low 06:05:12 - 06:19:54 9809
Goldendale 06:12:33 -29.8 Dark Down 23.9 108.7 Low 06:05:12 - 06:19:54 9797
The Dalles 06:12:33 -29.8 Dark Down 23.7 108.3 Low 06:05:12 - 06:19:54 9796
Maupin 06:12:33 -30.2 Dark Down 23.9 108.2 Low 06:05:12 - 06:19:54 9778
Pasco 06:12:33 -30.0 Dark Down 24.8 110.3 Low 06:05:12 - 06:19:54 9775
PNWRO 06:12:33 -30.3 Dark Down 25.1 110.4 Low 06:05:12 - 06:19:54 9760
Sisters 06:13:08 -30.8 Dark Down 23.9 107.6 Low 06:05:47 - 06:20:29 9733
Redmond 06:13:07 -31.0 Dark Down 24.2 107.9 Low 06:05:46 - 06:20:28 9723
Bend 06:13:09 -31.1 Dark Down 24.2 107.7 Low 06:05:48 - 06:20:30 9717
Oregon Observatory 06:13:10 -31.2 Dark Down 24.2 107.5 Low 06:05:49 - 06:20:31 9711
Sleaford 06:11:56 -27.9 Dark Down 29.7 124.9 Low 06:04:35 - 06:19:17 9709
La Pine/Gilchrist 06:13:12 -31.4 Dark Down 24.2 107.4 Low 06:05:51 - 06:20:33 9703
North Lake 06:13:13 -32.0 Dark Down 24.7 107.7 Low 06:05:52 - 06:20:34 9669
Chiloquin 06:13:17 -32.2 Dark Down 24.3 106.6 Low 06:05:56 - 06:20:38 9657
Klamath Falls 06:13:20 -32.5 Dark Down 24.4 106.6 Low 06:05:59 - 06:20:41 9638
Paisley 06:13:15 -32.6 Dark Down 25.2 107.7 Low 06:05:54 - 06:20:36 9634
Lakeview 06:13:17 -33.1 Dark Down 25.5 107.6 Low 06:05:56 - 06:20:38 9604
Fall River/Burney 06:13:25 -33.6 Dark Down 25.1 106.3 Low 06:06:04 - 06:20:46 9569
Cedarville 06:13:20 -33.7 Dark Down 25.8 107.5 Low 06:05:59 - 06:20:41 9566
Susanville 06:13:27 -34.5 Dark Down 25.8 106.6 Low 06:06:06 - 06:20:48 9519
Greenville 06:13:30 -34.6 Dark Down 25.7 106.3 Low 06:06:09 - 06:20:51 9511
Gimple 06:13:29 -34.6 Dark Down 25.7 106.3 Low 06:06:08 - 06:20:50 9509
Quincy 06:13:30 -34.7 Dark Down 25.7 106.2 Low 06:06:09 - 06:20:51 9500
Portola 06:13:30 -35.1 Dark Down 26.1 106.5 Low 06:06:09 - 06:20:51 9482
Reno 06:13:30 -35.6 Dark Down 26.7 106.8 Low 06:06:09 - 06:20:51 9452
Carson City 06:13:32 -35.9 Dark Down 26.8 106.7 Low 06:06:11 - 06:20:53 9432
Gardnerville 06:13:33 -36.1 Dark Down 26.9 106.6 Low 06:06:12 - 06:20:54 9417
Yerington 06:13:32 -36.3 Dark Down 27.3 107.1 Low 06:06:11 - 06:20:53 9405
Hawthorne 06:13:32 -36.9 Dark Down 27.9 107.2 Low 06:06:11 - 06:20:53 9366
Lee Vining 06:13:37 -37.2 Dark Down 27.7 106.6 Low 06:06:16 - 06:20:58 9346
Tonopah 06:13:32 -37.9 Dark Down 29.1 108.1 Low 06:06:11 - 06:20:53 9303
Bishop 06:13:38 -38.0 Dark Down 28.4 106.8 Low 06:06:17 - 06:20:59 9292
CPSLO 06:13:53 -38.7 Dark Down 27.2 104.2 Low 06:06:32 - 06:21:14 9225
Beatty 06:13:37 -39.1 Dark Down 29.8 107.8 Low 06:06:16 - 06:20:58 9222
Indian Springs 06:13:36 -39.8 Dark Down 30.7 108.4 Up 06:06:15 - 06:20:57 9173
Henderson 06:13:37 -40.5 Dark Down 31.4 108.6 Up 06:06:16 - 06:20:58 9120
Dunrhomin 06:12:33 -39.5 Dark Down 36.6 119.2 Up 06:05:12 - 06:19:54 9100
Wildwood 06:13:54 -40.7 Dark Down 29.2 105.0 Low 06:06:33 - 06:21:15 9096
Laughlin/Bullhead City 06:13:39 -41.5 Dark Down 32.0 108.4 Up 06:06:18 - 06:21:00 9054
Patrick 06:13:37 -41.5 Dark Down 32.5 109.1 Up 06:06:16 - 06:20:58 9050
Kingman/Dolan Springs 06:13:39 -41.6 Dark Down 32.4 108.8 Up 06:06:18 - 06:21:00 9041
Mohave Valley 06:13:42 -41.7 Dark Down 32.1 108.3 Up 06:06:21 - 06:21:03 9036
Idyllwild 06:13:52 -41.8 Dark Down 30.8 106.1 Up 06:06:31 - 06:21:13 9023
Lake Havasu City 06:13:42 -42.2 Dark Down 32.4 108.2 Up 06:06:21 - 06:21:03 9004
Parker 06:13:44 -42.5 Dark Down 32.6 108.0 Up 06:06:23 - 06:21:05 8980
Blythe 06:13:47 -42.8 Dark Down 32.5 107.5 Up 06:06:26 - 06:21:08 8954
Calipatria 06:13:52 -42.9 Dark Down 31.9 106.6 Up 06:06:31 - 06:21:13 8948
Yuma 06:13:52 -43.6 Dark Down 32.8 106.9 Up 06:06:31 - 06:21:13 8894
George/Scottsdale 06:13:40 -43.8 Dark Down 34.6 109.5 Up 06:06:19 - 06:21:01 8881

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 469750, (2022/08/30 06:11UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 43.02 140
Algenib        00:13:14.2 +15:11:01  2.8 12.81 164
96 G. Psc      00:48:24.1 +05:16:25  5.8  1.03 176
PPM 143847     00:45:04.5 +05:10:54  8.1  0.28 176
PPM 143845     00:45:02.5 +04:49:54 10.8  0.17 177
469750         00:44:30.0 +04:56:17 12.3       177
Positions are for J2000

Event circumstances last updated at 2021/11/15 00:48:16 UT

Marc W. Buie, Southwest Research Institute

RECON