RECON: TNO occultation with 500881

Event between (500881) 13JM64 and star GA0740:07026365 with event index number of 2335010

Geocentric closest approach at 2024/06/06 08:06:19 UTC

J2000 position of star is 17:11:01.7 -15:28:15
Equinox of date position of star is 17:12:18.2 -15:29:48
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=24.3

[RECON map]
TNO is 40.9 AU from the Sun and 39.9 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 1094 seconds.
The 1-sigma cross-track error in the shadow position is 3110 km.
The sky-plane scale is 28921.8 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 5.6 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 500881, (2024/06/06 08:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.6 -26:29:03  0.9 14.63 176
35Eta Oph      17:11:46.9 -15:45:12  2.6  0.30 168
PPM 232829     17:16:43.7 -14:36:36  5.9  1.37 166
PPM 232759     17:13:58.8 -15:11:28  8.3  0.48 167
PPM 232709     17:12:11.5 -15:26:40  9.4  0.08 167
500881         17:12:25.6 -15:29:57 15.6       167
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 0.8 sigma about the mid-time.
The median site spacing is 16.7 km RECON observability=1.0 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:06:04 -13.9 AT Down 21.5 193.5 Low 07:51:04 - 08:21:04 11808
Kamloops 08:06:43 -16.6 AT Down 23.8 178.7 Low 07:51:43 - 08:21:43 11685
Kelowna 08:06:41 -17.4 AT Down 24.7 179.7 Low 07:51:41 - 08:21:41 11654
Peachland 08:06:40 -17.5 AT Down 24.8 179.3 Low 07:51:40 - 08:21:40 11647
Summerland 08:06:41 -17.7 AT Down 24.9 179.4 Low 07:51:41 - 08:21:41 11641
Penticton 08:06:40 -17.7 AT Down 25.0 179.6 Low 07:51:40 - 08:21:40 11638
Oliver 08:06:41 -18.1 Dark Down 25.3 179.6 Low 07:51:41 - 08:21:41 11622
Anarchist Mountain Observatory 08:06:40 -18.2 Dark Down 25.5 179.8 Low 07:51:40 - 08:21:40 11615
Tonasket 08:06:40 -18.5 Dark Down 25.8 179.7 Low 07:51:40 - 08:21:40 11599
Okanogan 08:06:40 -18.9 Dark Down 26.2 179.5 Low 07:51:40 - 08:21:40 11582
Brewster 08:06:42 -19.2 Dark Down 26.4 179.3 Low 07:51:42 - 08:21:42 11567
Victoria 08:06:52 -18.8 Dark Down 25.9 175.5 Low 07:51:52 - 08:21:52 11561
Manson/Chelan 08:06:42 -19.4 Dark Down 26.6 178.9 Low 07:51:42 - 08:21:42 11554
Wenatchee 08:06:42 -19.9 Dark Down 27.1 178.7 Low 07:51:42 - 08:21:42 11529
Ellensburg 08:06:43 -20.3 Dark Down 27.5 178.5 Low 07:51:43 - 08:21:43 11507
Yakima 08:06:43 -20.7 Dark Down 27.9 178.5 Low 07:51:43 - 08:21:43 11485
Toppenish/White Swan 08:06:43 -20.9 Dark Down 28.1 178.6 Low 07:51:43 - 08:21:43 11475
PNWRO 08:06:37 -21.2 Dark Down 28.5 180.3 Low 07:51:37 - 08:21:37 11467
Goldendale 08:06:44 -21.5 Dark Down 28.7 178.2 Low 07:51:44 - 08:21:44 11443
The Dalles 08:06:44 -21.7 Dark Down 28.9 177.8 Low 07:51:44 - 08:21:44 11428
Maupin 08:06:45 -22.1 Dark Down 29.3 177.9 Low 07:51:45 - 08:21:45 11406
Sisters 08:06:46 -23.0 Dark Down 30.2 177.3 Up 07:51:46 - 08:21:46 11354
Bend 08:06:45 -23.2 Dark Down 30.4 177.6 Up 07:51:45 - 08:21:45 11343
Oregon Observatory 08:06:46 -23.4 Dark Down 30.6 177.4 Up 07:51:46 - 08:21:46 11332
North Lake 08:06:44 -24.0 Dark Down 31.3 178.0 Up 07:51:44 - 08:21:44 11300
Chiloquin 08:06:47 -24.7 Dark Down 31.9 176.9 Up 07:51:47 - 08:21:47 11253
Lakeview 08:06:42 -25.1 Dark Down 32.3 178.6 Up 07:51:42 - 08:21:42 11243
Klamath Falls 08:06:46 -25.1 Dark Down 32.3 177.0 Up 07:51:46 - 08:21:46 11233
Cedarville 08:06:41 -25.7 Dark Down 33.0 178.8 Up 07:51:41 - 08:21:41 11205
Dunrhomin 08:05:51 -25.2 Dark Down 32.8 195.8 Up 07:50:51 - 08:20:51 11203
CU-SBO 08:05:51 -25.4 Dark Down 33.1 195.8 Up 07:50:51 - 08:20:51 11187
Fall River/Burney 08:06:45 -26.2 Dark Down 33.4 177.4 Up 07:51:45 - 08:21:45 11165
Susanville 08:06:42 -26.9 Dark Down 34.1 178.2 Up 07:51:42 - 08:21:42 11132
Gimple 08:06:43 -27.1 Dark Down 34.4 178.0 Up 07:51:43 - 08:21:43 11113
Greenville 08:06:43 -27.1 Dark Down 34.4 177.9 Up 07:51:43 - 08:21:43 11113
Quincy 08:06:43 -27.3 Dark Down 34.6 177.9 Up 07:51:43 - 08:21:43 11100
Portola 08:06:42 -27.5 Dark Down 34.7 178.5 Up 07:51:42 - 08:21:42 11096
Reno 08:06:40 -27.7 Dark Down 35.0 179.2 Up 07:51:40 - 08:21:40 11085
Carson City 08:06:39 -28.1 Dark Down 35.3 179.2 Up 07:51:39 - 08:21:39 11062
Yerington 08:06:37 -28.2 Dark Down 35.5 180.0 Up 07:51:37 - 08:21:37 11054
Gardnerville 08:06:39 -28.3 Dark Down 35.6 179.3 Up 07:51:39 - 08:21:39 11047
Hawthorne 08:06:35 -28.7 Dark Down 36.0 180.6 Up 07:51:35 - 08:21:35 11028
Tonopah 08:06:30 -29.1 Dark Down 36.4 182.3 Up 07:51:30 - 08:21:30 11009
Lee Vining 08:06:36 -29.3 Dark Down 36.6 180.0 Up 07:51:36 - 08:21:36 10988
Bishop 08:06:34 -29.8 Dark Down 37.2 180.9 Up 07:51:34 - 08:21:34 10954
Beatty 08:06:28 -30.2 Dark Down 37.6 182.8 Up 07:51:28 - 08:21:28 10934
Indian Springs 08:06:24 -30.4 Dark Down 37.9 184.2 Up 07:51:24 - 08:21:24 10920
Henderson 08:06:22 -30.9 Dark Down 38.3 185.0 Up 07:51:22 - 08:21:22 10887
Patrick 08:06:18 -31.4 Dark Down 38.9 186.4 Up 07:51:18 - 08:21:18 10851
Kingman/Dolan Springs 08:06:17 -31.6 Dark Down 39.1 186.2 Up 07:51:17 - 08:21:17 10835
Laughlin/Bullhead City 08:06:20 -31.7 Dark Down 39.2 185.6 Up 07:51:20 - 08:21:20 10829
Mohave Valley 08:06:20 -32.0 Dark Down 39.5 185.6 Up 07:51:20 - 08:21:20 10810
Lake Havasu City 08:06:19 -32.3 Dark Down 39.8 185.9 Up 07:51:19 - 08:21:19 10784
Parker 08:06:18 -32.7 Dark Down 40.2 186.0 Up 07:51:18 - 08:21:18 10759
George/Scottsdale 08:06:09 -32.8 Dark Down 40.3 189.1 Up 07:51:09 - 08:21:09 10743
Wildwood 08:06:34 -33.1 Dark Down 40.4 180.7 Up 07:51:34 - 08:21:34 10725
Idyllwild 08:06:27 -33.3 Dark Down 40.7 183.0 Up 07:51:27 - 08:21:27 10715
Calipatria 08:06:22 -33.8 Dark Down 41.3 184.5 Up 07:51:22 - 08:21:22 10678
Yuma 08:06:19 -34.2 Dark Down 41.7 185.7 Up 07:51:19 - 08:21:19 10652

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 500881, (2024/06/06 08:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.63 176
35Eta Oph      17:10:22.7 -15:43:29  2.6  0.30 168
PPM 232829     17:15:20.3 -14:35:03  5.9  1.37 166
PPM 232759     17:12:35.0 -15:09:49  8.3  0.48 167
PPM 232709     17:10:47.6 -15:24:57  9.4  0.08 167
500881         17:11:01.7 -15:28:15 15.6       167
Positions are for J2000

Event circumstances last updated at 2022/04/03 00:08:31 UT

Marc W. Buie, Southwest Research Institute

RECON