RECON: TNO occultation with 470593

Event between (470593) 08LP17 and star GA0600:36044977 with event index number of 2276427

Geocentric closest approach at 2027/06/29 09:37:08 UTC

J2000 position of star is 18:14:17.3 -28:39:56
Equinox of date position of star is 18:15:44.3 -28:39:26
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 121 degrees from the moon. Moon is 28% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 32.4 AU from the Sun and 31.4 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 133 seconds.
The 1-sigma cross-track error in the shadow position is 1445 km.
The sky-plane scale is 22785.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=346.7 km assuming a 5% albedo -- 13.0 sec chord
Diameter=141.6 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470593, (2027/06/29 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.9 -26:29:26  0.9 23.31 144
Nunki          18:56:58.1 -26:15:36  2.0  9.39 112
PPM 267912     18:09:49.5 -28:27:05  4.6  1.38 122
PPM 268117     18:16:42.7 -28:39:38  8.5  0.15 121
PPM 268088     18:15:47.0 -28:40:52  9.1  0.06 121
470593         18:16:01.8 -28:39:20 16.2       121
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 71.4 km RECON observability=0.1 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 09:35:29 -13.4 AT Up 7.1 203.8 Really Low 09:23:56 - 09:47:02 10991
Victoria 09:35:34 -16.1 AT Up 9.8 201.4 Really Low 09:24:01 - 09:47:07 10989
Peachland 09:35:26 -14.2 AT Up 7.8 204.4 Really Low 09:23:53 - 09:46:59 10952
Kelowna 09:35:25 -14.0 AT Up 7.6 204.6 Really Low 09:23:52 - 09:46:58 10949
Summerland 09:35:25 -14.3 AT Up 7.9 204.5 Really Low 09:23:52 - 09:46:58 10945
Penticton 09:35:25 -14.3 AT Up 7.9 204.6 Really Low 09:23:52 - 09:46:58 10941
Oliver 09:35:24 -14.6 AT Up 8.3 204.6 Really Low 09:23:51 - 09:46:57 10930
Anarchist Mountain Observatory 09:35:24 -14.7 AT Up 8.4 204.7 Really Low 09:23:51 - 09:46:57 10921
Okanogan 09:35:24 -15.4 AT Up 9.0 204.6 Really Low 09:23:51 - 09:46:57 10905
Manson/Chelan 09:35:24 -16.0 AT Up 9.6 204.1 Really Low 09:23:51 - 09:46:57 10901
Brewster 09:35:23 -15.7 AT Up 9.3 204.4 Really Low 09:23:50 - 09:46:56 10900
Wenatchee 09:35:24 -16.5 AT Up 10.1 204.0 Really Low 09:23:51 - 09:46:57 10889
Ellensburg 09:35:24 -16.9 AT Up 10.5 203.9 Really Low 09:23:51 - 09:46:57 10880
Yakima 09:35:23 -17.3 AT Up 10.9 203.9 Really Low 09:23:50 - 09:46:56 10866
Toppenish/White Swan 09:35:22 -17.5 AT Up 11.0 204.1 Really Low 09:23:49 - 09:46:55 10855
The Dalles 09:35:24 -18.4 Dark Up 12.0 203.4 Really Low 09:23:51 - 09:46:57 10844
Maupin 09:35:23 -18.7 Dark Up 12.3 203.6 Really Low 09:23:50 - 09:46:56 10826
PNWRO 09:35:18 -17.4 AT Up 11.0 205.3 Really Low 09:23:45 - 09:46:51 10808
Sisters 09:35:23 -19.7 Dark Up 13.3 203.2 Really Low 09:23:50 - 09:46:56 10804
Bend 09:35:22 -19.8 Dark Up 13.4 203.5 Really Low 09:23:49 - 09:46:55 10789
Oregon Observatory 09:35:22 -20.0 Dark Up 13.6 203.4 Really Low 09:23:49 - 09:46:55 10785
Chiloquin 09:35:22 -21.4 Dark Up 15.0 203.2 Really Low 09:23:49 - 09:46:55 10741
Klamath Falls 09:35:21 -21.7 Dark Up 15.2 203.3 Really Low 09:23:48 - 09:46:54 10725
Sleaford 09:34:57 -8.1 NT Up 1.5 215.6 Really Low 09:23:24 - 09:46:30 10700
Fall River/Burney 09:35:19 -22.7 Dark Up 16.2 203.7 Really Low 09:23:46 - 09:46:52 10665
Cedarville 09:35:16 -21.9 Dark Up 15.4 204.7 Really Low 09:23:43 - 09:46:49 10658
Greenville 09:35:17 -23.4 Dark Up 16.9 204.2 Really Low 09:23:44 - 09:46:50 10613
Gimple 09:35:16 -23.4 Dark Up 16.9 204.3 Really Low 09:23:43 - 09:46:49 10611
Quincy 09:35:16 -23.6 Dark Up 17.1 204.2 Really Low 09:23:43 - 09:46:49 10604
Portola 09:35:14 -23.6 Dark Up 17.1 204.6 Really Low 09:23:41 - 09:46:47 10587
Reno 09:35:12 -23.6 Dark Up 17.1 205.2 Really Low 09:23:39 - 09:46:45 10558
Carson City 09:35:12 -23.9 Dark Up 17.4 205.3 Really Low 09:23:39 - 09:46:45 10541
Gardnerville 09:35:11 -24.2 Dark Up 17.6 205.4 Really Low 09:23:38 - 09:46:44 10528
Yerington 09:35:09 -23.9 Dark Up 17.4 205.8 Really Low 09:23:36 - 09:46:42 10515
Hawthorne 09:35:07 -24.2 Dark Up 17.6 206.3 Really Low 09:23:34 - 09:46:40 10479
Lee Vining 09:35:08 -24.9 Dark Up 18.3 206.0 Really Low 09:23:35 - 09:46:41 10464
Bishop 09:35:04 -25.2 Dark Up 18.6 206.7 Really Low 09:23:31 - 09:46:37 10414
Beatty 09:34:59 -25.0 Dark Up 18.4 208.1 Really Low 09:23:26 - 09:46:32 10345
Wildwood 09:35:02 -28.2 Dark Up 21.6 207.1 Low 09:23:29 - 09:46:35 10242
Laughlin/Bullhead City 09:34:50 -25.7 Dark Up 19.1 210.2 Really Low 09:23:17 - 09:46:23 10188
Patrick 09:34:48 -25.3 Dark Up 18.6 210.7 Really Low 09:23:15 - 09:46:21 10181
Dunrhomin 09:34:30 -17.5 AT Up 10.8 216.8 Really Low 09:22:57 - 09:46:03 10174
Idyllwild 09:34:55 -27.8 Dark Up 21.2 208.7 Low 09:23:22 - 09:46:28 10169
CU-SBO 09:34:30 -17.8 AT Up 11.0 216.8 Really Low 09:22:57 - 09:46:03 10164
Lake Havasu City 09:34:48 -26.2 Dark Up 19.5 210.5 Really Low 09:23:15 - 09:46:21 10142
Calipatria 09:34:51 -27.9 Dark Up 21.2 209.8 Low 09:23:18 - 09:46:24 10098
Yuma 09:34:47 -27.9 Dark Up 21.2 210.6 Low 09:23:14 - 09:46:20 10045
George/Scottsdale 09:34:39 -25.9 Dark Up 19.1 212.6 Really Low 09:23:06 - 09:46:12 10021

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, (2027/06/29 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.31 144
Nunki          18:55:15.9 -26:17:49  2.0  9.39 112
PPM 267912     18:08:05.0 -28:27:26  4.6  1.38 122
PPM 268117     18:14:58.2 -28:40:16  8.5  0.15 121
PPM 268088     18:14:02.4 -28:41:28  9.1  0.06 121
470593         18:14:17.3 -28:39:56 16.2       121
Positions are for J2000

Event circumstances last updated at 2022/11/21 03:02:22 UT

Marc W. Buie, Southwest Research Institute

RECON