RECON: TNO occultation with 470593

Event between (470593) 08LP17 and star GA0600:34310114 with event index number of 2276861

Geocentric closest approach at 2027/10/06 03:11:17 UTC

J2000 position of star is 18:09:49.4 -28:38:37
Equinox of date position of star is 18:11:16.5 -28:38:16
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 5 degrees from the moon. Moon is 37% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 32.5 AU from the Sun and 32.7 AU from the Earth.
The TNO is moving 12.1 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 240 seconds.
The 1-sigma cross-track error in the shadow position is 1370 km.
The sky-plane scale is 23704.1 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=346.7 km assuming a 5% albedo -- 24.6 sec chord
Diameter=141.6 km assuming a 30% albedo -- 10.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470593, (2027/10/06 03:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.9 -26:29:28  0.9 22.33  18
Nunki          18:56:59.1 -26:15:34  2.0 10.34  15
PPM 267912     18:09:50.5 -28:27:04  4.6  0.42   5
PPM 267931     18:10:37.8 -28:44:56  8.0  0.24   5
PPM 267958     18:11:19.3 -28:50:52  8.8  0.22   5
470593         18:11:35.0 -28:38:11 16.2         5
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 3.8 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 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)
Victoria 03:14:59 -15.8 AT Up 9.0 204.2 Really Low 02:59:59 - 03:29:59 6422
Kamloops 03:15:06 -17.3 AT Up 6.2 206.6 Really Low 03:00:06 - 03:30:06 6418
Peachland 03:15:12 -17.9 AT Up 6.9 207.2 Really Low 03:00:12 - 03:30:12 6373
Kelowna 03:15:13 -18.1 Dark Up 6.7 207.5 Really Low 03:00:13 - 03:30:13 6369
Summerland 03:15:13 -18.0 AT Up 7.0 207.3 Really Low 03:00:13 - 03:30:13 6366
Penticton 03:15:15 -18.1 Dark Up 7.0 207.4 Really Low 03:00:15 - 03:30:15 6360
Oliver 03:15:17 -18.2 Dark Up 7.3 207.4 Really Low 03:00:17 - 03:30:17 6348
Anarchist Mountain Observatory 03:15:18 -18.3 Dark Up 7.4 207.6 Really Low 03:00:18 - 03:30:18 6338
Okanogan 03:15:19 -18.4 Dark Up 8.0 207.5 Really Low 03:00:19 - 03:30:19 6320
Manson/Chelan 03:15:16 -18.1 Dark Up 8.6 207.0 Really Low 03:00:16 - 03:30:16 6318
Brewster 03:15:17 -18.3 Dark Up 8.3 207.3 Really Low 03:00:17 - 03:30:17 6316
Wenatchee 03:15:17 -18.1 Dark Up 9.1 206.9 Really Low 03:00:17 - 03:30:17 6305
Ellensburg 03:15:19 -18.0 Dark Up 9.5 206.8 Really Low 03:00:19 - 03:30:19 6295
Yakima 03:15:19 -18.1 Dark Up 9.9 206.8 Really Low 03:00:19 - 03:30:19 6280
Toppenish/White Swan 03:15:21 -18.3 Dark Up 10.0 206.9 Really Low 03:00:21 - 03:30:21 6267
The Dalles 03:15:18 -17.9 AT Up 11.0 206.3 Really Low 03:00:18 - 03:30:18 6258
Maupin 03:15:20 -18.0 Dark Up 11.3 206.5 Really Low 03:00:20 - 03:30:20 6239
Sisters 03:15:20 -17.9 AT Up 12.3 206.1 Really Low 03:00:20 - 03:30:20 6216
PNWRO 03:15:29 -19.4 Dark Up 9.9 208.2 Really Low 03:00:29 - 03:30:29 6212
Bend 03:15:22 -18.1 Dark Up 12.4 206.4 Really Low 03:00:22 - 03:30:22 6199
Oregon Observatory 03:15:22 -18.0 Dark Up 12.6 206.3 Really Low 03:00:22 - 03:30:22 6196
Chiloquin 03:15:22 -18.0 AT Up 13.9 206.1 Really Low 03:00:22 - 03:30:22 6150
Klamath Falls 03:15:24 -18.1 Dark Up 14.2 206.2 Really Low 03:00:24 - 03:30:24 6132
Sleaford 03:16:06 -25.4 Dark Down 0.1 218.5 Really Low 03:01:06 - 03:31:06 6076
Fall River/Burney 03:15:31 -18.6 Dark Up 15.1 206.7 Really Low 03:00:31 - 03:30:31 6067
Cedarville 03:15:36 -19.4 Dark Up 14.3 207.7 Really Low 03:00:36 - 03:30:36 6054
Greenville 03:15:35 -19.1 Dark Up 15.8 207.2 Really Low 03:00:35 - 03:30:35 6010
Gimple 03:15:35 -19.2 Dark Up 15.7 207.2 Really Low 03:00:35 - 03:30:35 6008
Quincy 03:15:36 -19.2 Dark Up 15.9 207.2 Really Low 03:00:36 - 03:30:36 6000
Portola 03:15:38 -19.5 Dark Up 15.9 207.6 Really Low 03:00:38 - 03:30:38 5980
Reno 03:15:44 -20.1 Dark Up 15.9 208.2 Really Low 03:00:44 - 03:30:44 5947
Carson City 03:15:44 -20.2 Dark Up 16.2 208.3 Really Low 03:00:44 - 03:30:44 5928
Gardnerville 03:15:47 -20.3 Dark Up 16.4 208.4 Really Low 03:00:47 - 03:30:47 5915
Yerington 03:15:50 -20.7 Dark Up 16.1 208.9 Really Low 03:00:50 - 03:30:50 5899
Hawthorne 03:15:54 -21.2 Dark Up 16.3 209.4 Really Low 03:00:54 - 03:30:54 5858
Lee Vining 03:15:52 -21.0 Dark Up 17.0 209.1 Really Low 03:00:52 - 03:30:52 5844
Bishop 03:15:58 -21.6 Dark Up 17.2 209.8 Really Low 03:00:58 - 03:30:58 5789
Beatty 03:16:10 -23.1 Dark Up 16.9 211.2 Really Low 03:01:10 - 03:31:10 5709
Wildwood 03:16:04 -22.1 Dark Up 20.1 210.2 Low 03:01:04 - 03:31:04 5609
Laughlin/Bullhead City 03:16:27 -25.2 Dark Up 17.4 213.3 Really Low 03:01:27 - 03:31:27 5534
Patrick 03:16:30 -25.7 Dark Up 16.9 213.8 Really Low 03:01:30 - 03:31:30 5524
Idyllwild 03:16:17 -23.7 Dark Up 19.6 211.8 Really Low 03:01:17 - 03:31:17 5524
Dunrhomin 03:16:59 -30.9 Dark Up 8.9 219.9 Really Low 03:01:59 - 03:31:59 5490
Lake Havasu City 03:16:30 -25.6 Dark Up 17.9 213.6 Really Low 03:01:30 - 03:31:30 5485
CU-SBO 03:17:01 -31.0 Dark Up 9.1 219.8 Really Low 03:02:01 - 03:32:01 5480
Calipatria 03:16:26 -24.8 Dark Up 19.6 212.9 Really Low 03:01:26 - 03:31:26 5444
Yuma 03:16:33 -25.7 Dark Up 19.5 213.7 Really Low 03:01:33 - 03:31:33 5385
George/Scottsdale 03:16:46 -27.8 Dark Up 17.3 215.7 Really Low 03:01:46 - 03:31:46 5348

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, (2027/10/06 03:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.33  18
Nunki          18:55:15.9 -26:17:49  2.0 10.34  15
PPM 267912     18:08:05.0 -28:27:26  4.6  0.42   5
PPM 267931     18:08:52.1 -28:45:20  8.0  0.24   5
PPM 267958     18:09:33.5 -28:51:18  8.8  0.22   5
470593         18:09:49.4 -28:38:37 16.2         5
Positions are for J2000

Event circumstances last updated at 2022/11/23 03:24:49 UT

Marc W. Buie, Southwest Research Institute

RECON