RECON: TNO occultation with 470593

Event between (470593) 08LP17 and star GA0600:37483552 with event index number of 2276209

Geocentric closest approach at 2027/05/24 08:40:10 UTC

J2000 position of star is 18:18:01.6 -28:33:45
Equinox of date position of star is 18:19:28.6 -28:33:07
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 13 degrees from the moon. Moon is 86% illuminated.
TNO apparent brightness V=21.7

[RECON map]
TNO is 32.4 AU from the Sun and 31.5 AU from the Earth.
The TNO is moving 18.9 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 165 seconds.
The 1-sigma cross-track error in the shadow position is 1667 km.
The sky-plane scale is 22864.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=346.7 km assuming a 5% albedo -- 15.8 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470593, (2027/05/24 08:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.5 -26:29:25  0.9 24.13  37
Nunki          18:56:57.7 -26:15:36  2.0  8.57   5
PPM 268205     18:19:46.1 -27:01:49  3.9  1.52  13
PPM 268183     18:19:08.3 -28:38:24  6.8  0.16  13
PPM 268215     18:20:05.4 -28:38:33  9.0  0.12  13
470593         18:19:45.7 -28:33:00 15.5        13
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 17.9 km RECON observability=0.3 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 08:40:35 -18.0 AT Up 8.2 159.7 Really Low 08:26:19 - 08:54:51 11526
Kelowna 08:40:33 -18.7 Dark Up 9.2 160.4 Really Low 08:26:17 - 08:54:49 11512
Peachland 08:40:34 -18.8 Dark Up 9.2 160.2 Really Low 08:26:18 - 08:54:50 11510
Summerland 08:40:34 -18.9 Dark Up 9.4 160.3 Really Low 08:26:18 - 08:54:50 11507
Penticton 08:40:33 -19.0 Dark Up 9.4 160.3 Really Low 08:26:17 - 08:54:49 11506
Sleaford 08:39:43 -14.0 AT Up 9.0 172.2 Really Low 08:25:27 - 08:53:59 11503
Oliver 08:40:34 -19.3 Dark Up 9.8 160.3 Really Low 08:26:18 - 08:54:50 11499
Anarchist Mountain Observatory 08:40:32 -19.5 Dark Up 10.0 160.5 Really Low 08:26:16 - 08:54:48 11496
Okanogan 08:40:36 -20.1 Dark Up 10.5 160.3 Really Low 08:26:20 - 08:54:52 11481
Victoria 08:40:50 -20.4 Dark Up 9.5 157.0 Really Low 08:26:34 - 08:55:06 11478
Brewster 08:40:37 -20.4 Dark Up 10.7 160.1 Really Low 08:26:21 - 08:54:53 11475
Manson/Chelan 08:40:39 -20.7 Dark Up 10.9 159.7 Really Low 08:26:23 - 08:54:55 11470
Wenatchee 08:40:40 -21.2 Dark Up 11.3 159.6 Really Low 08:26:24 - 08:54:56 11459
Ellensburg 08:40:43 -21.6 Dark Up 11.6 159.4 Really Low 08:26:27 - 08:54:59 11449
Yakima 08:40:43 -22.0 Dark Up 12.0 159.3 Really Low 08:26:27 - 08:54:59 11439
Toppenish/White Swan 08:40:43 -22.2 Dark Up 12.2 159.4 Really Low 08:26:27 - 08:54:59 11433
PNWRO 08:40:38 -22.4 Dark Up 12.9 160.7 Really Low 08:26:22 - 08:54:54 11425
The Dalles 08:40:47 -23.1 Dark Up 12.8 158.7 Really Low 08:26:31 - 08:55:03 11412
Maupin 08:40:47 -23.5 Dark Up 13.2 158.8 Really Low 08:26:31 - 08:55:03 11401
Sisters 08:40:51 -24.4 Dark Up 13.9 158.3 Really Low 08:26:35 - 08:55:07 11375
Bend 08:40:52 -24.6 Dark Up 14.2 158.5 Really Low 08:26:36 - 08:55:08 11369
Oregon Observatory 08:40:52 -24.8 Dark Up 14.3 158.4 Really Low 08:26:36 - 08:55:08 11363
Chiloquin 08:40:55 -26.1 Dark Up 15.4 157.9 Really Low 08:26:39 - 08:55:11 11321
Klamath Falls 08:40:56 -26.4 Dark Up 15.7 157.9 Really Low 08:26:40 - 08:55:12 11310
Cedarville 08:40:51 -26.9 Dark Up 16.8 159.2 Really Low 08:26:35 - 08:55:07 11289
Fall River/Burney 08:40:57 -27.6 Dark Up 16.9 158.1 Really Low 08:26:41 - 08:55:13 11270
Gimple 08:40:56 -28.4 Dark Up 17.9 158.5 Really Low 08:26:40 - 08:55:12 11238
Greenville 08:40:57 -28.4 Dark Up 17.9 158.4 Really Low 08:26:41 - 08:55:13 11238
Quincy 08:40:57 -28.6 Dark Up 18.1 158.4 Really Low 08:26:41 - 08:55:13 11230
Portola 08:40:56 -28.6 Dark Up 18.4 158.8 Really Low 08:26:40 - 08:55:12 11227
Reno 08:40:53 -28.8 Dark Up 18.8 159.3 Really Low 08:26:37 - 08:55:09 11217
Carson City 08:40:54 -29.1 Dark Up 19.1 159.3 Really Low 08:26:38 - 08:55:10 11204
Yerington 08:40:52 -29.2 Dark Up 19.5 159.8 Really Low 08:26:36 - 08:55:08 11196
Gardnerville 08:40:55 -29.4 Dark Up 19.4 159.3 Really Low 08:26:39 - 08:55:11 11194
Dunrhomin 08:39:50 -24.5 Dark Up 20.8 172.5 Low 08:25:34 - 08:54:06 11179
Hawthorne 08:40:50 -29.6 Dark Up 20.0 160.2 Low 08:26:34 - 08:55:06 11178
CU-SBO 08:39:51 -24.8 Dark Up 21.0 172.4 Low 08:25:35 - 08:54:07 11171
Lee Vining 08:40:54 -30.2 Dark Up 20.5 159.7 Low 08:26:38 - 08:55:10 11156
Bishop 08:40:52 -30.7 Dark Up 21.2 160.3 Low 08:26:36 - 08:55:08 11130
Beatty 08:40:45 -30.8 Dark Up 22.1 161.7 Low 08:26:29 - 08:55:01 11109
Patrick 08:40:35 -31.5 Dark Up 24.2 164.1 Low 08:26:19 - 08:54:51 11035
Laughlin/Bullhead City 08:40:38 -32.0 Dark Up 24.2 163.5 Low 08:26:22 - 08:54:54 11026
Lake Havasu City 08:40:38 -32.5 Dark Up 24.9 163.6 Low 08:26:22 - 08:54:54 10994
Wildwood 08:40:58 -33.9 Dark Up 24.2 159.7 Low 08:26:42 - 08:55:14 10982
Idyllwild 08:40:52 -33.8 Dark Up 25.1 161.3 Low 08:26:36 - 08:55:08 10964
George/Scottsdale 08:40:27 -32.6 Dark Up 26.2 165.8 Low 08:26:11 - 08:54:43 10946
Calipatria 08:40:45 -34.1 Dark Up 26.0 162.3 Low 08:26:29 - 08:55:01 10931
Yuma 08:40:42 -34.3 Dark Up 26.6 163.1 Low 08:26:26 - 08:54:58 10907

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 470593, (2027/05/24 08:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 24.13  37
Nunki          18:55:15.9 -26:17:49  2.0  8.57   5
PPM 268205     18:18:03.2 -27:02:34  3.9  1.52  13
PPM 268183     18:17:24.1 -28:39:08  6.8  0.16  13
PPM 268215     18:18:21.2 -28:39:19  9.0  0.12  13
470593         18:18:01.6 -28:33:45 15.5        13
Positions are for J2000

Event circumstances last updated at 2022/11/20 02:59:37 UT

Marc W. Buie, Southwest Research Institute

RECON