RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star GA0780:07775748 with event index number of 1160208

Geocentric closest approach at 2021/05/13 09:28:25 UTC

J2000 position of star is 17:48:36.5 -10:54:52
Equinox of date position of star is 17:49:47.5 -10:55:12
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 159 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 28.5 AU from the Sun and 27.6 AU from the Earth.
The TNO is moving 18.6 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 164 seconds.
The 1-sigma cross-track error in the shadow position is 1440 km.
The sky-plane scale is 20044.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 10.7 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469362, (2021/05/13 09:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.2 -26:28:39  0.9 24.28 175
35Eta Oph      17:11:36.3 -15:45:00  2.6 10.47 169
PPM 233705     17:54:14.8 -10:54:11  6.1  1.09 158
PPM 233617     17:49:49.7 -10:16:48  8.1  0.64 159
PPM 233625     17:50:37.2 -10:46:46  9.4  0.25 159
469362         17:49:47.7 -10:55:12 14.9       159
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 14.9 km RECON observability=1.0 and success probability=1.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 09:30:36 -18.0 Dark Down 27.9 166.1 Low 09:16:27 - 09:44:45 5135
Kelowna 09:30:37 -18.4 Dark Down 28.2 165.9 Low 09:16:28 - 09:44:46 5109
Peachland 09:30:38 -18.6 Dark Down 28.3 165.6 Low 09:16:29 - 09:44:47 5096
Summerland 09:30:38 -18.7 Dark Down 28.5 165.7 Low 09:16:29 - 09:44:47 5089
Penticton 09:30:36 -18.7 Dark Down 28.5 165.8 Low 09:16:27 - 09:44:45 5088
Oliver 09:30:38 -19.0 Dark Down 28.9 165.7 Low 09:16:29 - 09:44:47 5067
Anarchist Mountain Observatory 09:30:37 -19.2 Dark Down 29.1 165.9 Low 09:16:28 - 09:44:46 5062
Tonasket 09:30:37 -19.5 Dark Down 29.4 165.8 Low 09:16:28 - 09:44:46 5042
Okanogan 09:30:37 -19.8 Dark Down 29.7 165.6 Low 09:16:28 - 09:44:46 5018
Brewster 09:30:38 -20.1 Dark Down 29.9 165.3 Low 09:16:29 - 09:44:47 4997
Manson/Chelan 09:30:38 -20.4 Dark Down 30.0 164.9 Up 09:16:29 - 09:44:47 4975
Wenatchee 09:30:41 -20.9 Dark Down 30.5 164.6 Up 09:16:32 - 09:44:50 4942
Victoria 09:30:51 -20.6 Dark Down 28.8 161.5 Low 09:16:42 - 09:45:00 4936
Ellensburg 09:30:42 -21.3 Dark Down 30.8 164.3 Up 09:16:33 - 09:44:51 4911
Pasco 09:30:36 -21.6 Dark Down 31.8 165.8 Up 09:16:27 - 09:44:45 4899
PNWRO 09:30:35 -21.8 Dark Down 32.1 166.0 Up 09:16:26 - 09:44:44 4889
Yakima 09:30:40 -21.7 Dark Down 31.2 164.2 Up 09:16:31 - 09:44:49 4885
Toppenish/White Swan 09:30:41 -21.8 Dark Down 31.4 164.4 Up 09:16:32 - 09:44:50 4875
Dunrhomin 09:29:36 -21.4 Dark Down 38.8 181.8 Up 09:15:27 - 09:43:45 4852
Goldendale 09:30:42 -22.5 Dark Down 31.9 163.8 Up 09:16:33 - 09:44:51 4829
The Dalles 09:30:44 -22.8 Dark Down 32.0 163.4 Up 09:16:35 - 09:44:53 4805
Maupin 09:30:43 -23.1 Dark Down 32.5 163.4 Up 09:16:34 - 09:44:52 4781
Redmond 09:30:43 -24.0 Dark Down 33.3 163.2 Up 09:16:34 - 09:44:52 4719
Sisters 09:30:44 -24.1 Dark Down 33.2 162.7 Up 09:16:35 - 09:44:53 4711
Bend 09:30:44 -24.2 Dark Down 33.5 163.0 Up 09:16:35 - 09:44:53 4701
Oregon Observatory 09:30:45 -24.4 Dark Down 33.6 162.8 Up 09:16:36 - 09:44:54 4686
La Pine/Gilchrist 09:30:44 -24.6 Dark Down 33.8 162.7 Up 09:16:35 - 09:44:53 4671
North Lake 09:30:42 -24.8 Dark Down 34.3 163.3 Up 09:16:33 - 09:44:51 4657
Paisley 09:30:42 -25.2 Dark Down 35.0 163.6 Up 09:16:33 - 09:44:51 4629
Lakeview 09:30:41 -25.6 Dark Down 35.5 163.7 Up 09:16:32 - 09:44:50 4599
Chiloquin 09:30:47 -25.7 Dark Down 34.8 162.0 Up 09:16:38 - 09:44:56 4585
Klamath Falls 09:30:46 -26.0 Dark Down 35.1 162.0 Up 09:16:37 - 09:44:55 4564
Cedarville 09:30:39 -26.2 Dark Down 36.1 163.8 Up 09:16:30 - 09:44:48 4558
Fall River/Burney 09:30:44 -27.0 Dark Down 36.3 162.2 Up 09:16:35 - 09:44:53 4490
Susanville 09:30:41 -27.4 Dark Down 37.1 163.0 Up 09:16:32 - 09:44:50 4466
Gimple 09:30:42 -27.7 Dark Down 37.3 162.6 Up 09:16:33 - 09:44:51 4440
Greenville 09:30:43 -27.7 Dark Down 37.3 162.5 Up 09:16:34 - 09:44:52 4437
Portola 09:30:40 -27.8 Dark Down 37.7 163.0 Up 09:16:31 - 09:44:49 4427
Reno 09:30:37 -27.9 Dark Down 38.1 163.8 Up 09:16:28 - 09:44:46 4426
Quincy 09:30:42 -27.9 Dark Down 37.5 162.5 Up 09:16:33 - 09:44:51 4423
Yerington 09:30:35 -28.2 Dark Down 38.8 164.4 Up 09:16:26 - 09:44:44 4403
Carson City 09:30:37 -28.2 Dark Down 38.5 163.7 Up 09:16:28 - 09:44:46 4400
Tonopah 09:30:25 -28.3 Dark Down 40.1 166.6 Up 09:16:16 - 09:44:34 4388
Hawthorne 09:30:31 -28.4 Dark Down 39.3 165.0 Up 09:16:22 - 09:44:40 4383
Gardnerville 09:30:37 -28.4 Dark Down 38.7 163.7 Up 09:16:28 - 09:44:46 4383
Lee Vining 09:30:33 -29.1 Dark Down 39.8 164.2 Up 09:16:24 - 09:44:42 4329
Indian Springs 09:30:18 -29.0 Dark Down 41.8 168.3 Up 09:16:09 - 09:44:27 4320
Beatty 09:30:24 -29.1 Dark Down 41.3 167.0 Up 09:16:15 - 09:44:33 4314
Bishop 09:30:30 -29.3 Dark Down 40.5 165.0 Up 09:16:21 - 09:44:39 4304
Henderson 09:30:15 -29.2 Dark Down 42.4 169.1 Up 09:16:06 - 09:44:24 4298
Patrick 09:30:09 -29.2 Dark Down 43.2 170.4 Up 09:16:00 - 09:44:18 4282
Kingman/Dolan Springs 09:30:11 -29.5 Dark Down 43.4 170.1 Up 09:16:02 - 09:44:20 4260
Laughlin/Bullhead City 09:30:12 -29.7 Dark Down 43.3 169.4 Up 09:16:03 - 09:44:21 4243
Mohave Valley 09:30:12 -30.0 Dark Down 43.6 169.4 Up 09:16:03 - 09:44:21 4223
George/Scottsdale 09:29:59 -29.7 Dark Down 45.1 172.8 Up 09:15:50 - 09:44:08 4208
Lake Havasu City 09:30:11 -30.2 Dark Down 44.0 169.6 Up 09:16:02 - 09:44:20 4199
Parker 09:30:11 -30.5 Dark Down 44.4 169.6 Up 09:16:02 - 09:44:20 4172
Blythe 09:30:11 -31.1 Dark Down 44.8 169.1 Up 09:16:02 - 09:44:20 4123
CPSLO 09:30:40 -32.0 Dark Down 42.0 161.7 Up 09:16:31 - 09:44:49 4080
Idyllwild 09:30:21 -31.9 Dark Down 44.4 166.3 Up 09:16:12 - 09:44:30 4072
Calipatria 09:30:15 -31.9 Dark Down 45.2 167.8 Up 09:16:06 - 09:44:24 4057
Yuma 09:30:11 -31.9 Dark Down 45.8 168.9 Up 09:16:02 - 09:44:20 4049
Wildwood 09:30:31 -32.3 Dark Down 43.6 163.9 Up 09:16:22 - 09:44:40 4045

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 469362, (2021/05/13 09:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 24.28 175
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.47 169
PPM 233705     17:53:03.6 -10:53:59  6.1  1.09 158
PPM 233617     17:48:38.8 -10:16:28  8.1  0.64 159
PPM 233625     17:49:26.1 -10:46:27  9.4  0.25 159
469362         17:48:36.5 -10:54:52 14.9       159
Positions are for J2000

Event circumstances last updated at 2021/04/25 22:58:26 UT

Marc W. Buie, Southwest Research Institute

RECON