RECON: TNO occultation with 469987

Event between (469987) 06HJ123 and star GA0740:12314863 with event index number of 2776243

Geocentric closest approach at 2029/06/18 08:42:03 UTC

J2000 position of star is 17:45:43.0 -14:23:17
Equinox of date position of star is 17:47:03.1 -14:23:45
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 103 degrees from the moon. Moon is 38% illuminated.
Apparent brightness V=21.0

[RECON map]
Object is 30.8 AU from the Sun and 29.8 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 99 seconds.
The 1-sigma cross-track error in the shadow position is 1116 km.
The sky-plane scale is 21632.9 km/arcsec.

The object has an absolute magnitude Hv=6.1
Diameter=359.8 km assuming a 5% albedo -- 15.3 sec chord
Diameter=146.9 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469987, (2029/06/18 08:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.1 -26:29:41  0.9 21.51  86
35Eta Oph      17:12:04.2 -15:45:33  2.6  8.63  95
PPM 233599     17:49:17.7 -14:44:03  5.9  0.57 104
PPM 233558     17:47:03.9 -14:27:22  8.3  0.10 103
469987         17:47:23.7 -14:23:52 13.4       104
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 0.0 km RECON observability=1.0 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)
Sleaford 08:41:09 -11.6 NT Down 20.1 205.7 Low 08:32:23 - 08:49:54 7514
Kamloops 08:41:47 -15.4 AT Down 24.3 191.2 Low 08:33:01 - 08:50:32 7467
Kelowna 08:41:44 -16.1 AT Down 25.0 192.2 Low 08:32:58 - 08:50:29 7429
Peachland 08:41:44 -16.3 AT Down 25.1 191.9 Low 08:32:59 - 08:50:30 7424
Summerland 08:41:44 -16.4 AT Down 25.3 192.0 Low 08:32:59 - 08:50:30 7417
Penticton 08:41:44 -16.5 AT Down 25.3 192.1 Low 08:32:58 - 08:50:29 7414
Oliver 08:41:44 -16.8 AT Down 25.6 192.2 Low 08:32:59 - 08:50:30 7397
Anarchist Mountain Observatory 08:41:43 -16.9 AT Down 25.8 192.4 Low 08:32:58 - 08:50:29 7389
Victoria 08:41:55 -17.8 AT Down 26.7 188.1 Low 08:33:09 - 08:50:40 7358
Okanogan 08:41:43 -17.6 AT Down 26.4 192.2 Low 08:32:57 - 08:50:28 7356
Brewster 08:41:43 -17.9 AT Down 26.7 192.0 Low 08:32:58 - 08:50:29 7342
Manson/Chelan 08:41:44 -18.1 Dark Down 27.0 191.7 Low 08:32:58 - 08:50:29 7331
Wenatchee 08:41:45 -18.6 Dark Down 27.5 191.5 Low 08:33:00 - 08:50:31 7307
Ellensburg 08:41:45 -19.1 Dark Down 27.9 191.3 Low 08:32:59 - 08:50:30 7285
Yakima 08:41:44 -19.5 Dark Down 28.3 191.4 Low 08:32:59 - 08:50:30 7263
Toppenish/White Swan 08:41:43 -19.7 Dark Down 28.5 191.6 Low 08:32:58 - 08:50:29 7252
PNWRO 08:41:39 -19.8 Dark Down 28.6 193.2 Low 08:32:53 - 08:50:24 7233
The Dalles 08:41:46 -20.5 Dark Down 29.4 190.8 Low 08:33:00 - 08:50:31 7208
Maupin 08:41:45 -20.9 Dark Down 29.8 191.0 Low 08:33:00 - 08:50:31 7186
Sisters 08:41:46 -21.8 Dark Down 30.7 190.5 Up 08:33:01 - 08:50:32 7136
Bend 08:41:46 -22.0 Dark Down 30.9 190.8 Up 08:33:00 - 08:50:31 7123
Oregon Observatory 08:41:45 -22.2 Dark Down 31.1 190.7 Up 08:33:00 - 08:50:31 7112
Chiloquin 08:41:46 -23.6 Dark Down 32.4 190.4 Up 08:33:00 - 08:50:31 7034
Klamath Falls 08:41:46 -23.9 Dark Down 32.8 190.5 Up 08:33:00 - 08:50:31 7014
Cedarville 08:41:40 -24.4 Dark Down 33.2 192.4 Up 08:32:54 - 08:50:25 6974
Fall River/Burney 08:41:44 -25.0 Dark Down 33.9 191.1 Up 08:32:58 - 08:50:29 6942
Greenville 08:41:41 -25.9 Dark Down 34.7 191.7 Up 08:32:56 - 08:50:27 6885
Gimple 08:41:41 -25.9 Dark Down 34.7 191.8 Up 08:32:56 - 08:50:27 6885
Quincy 08:41:41 -26.1 Dark Down 34.9 191.7 Up 08:32:55 - 08:50:26 6872
Dunrhomin 08:40:48 -22.3 Dark Down 30.4 208.9 Up 08:32:03 - 08:49:34 6870
Portola 08:41:40 -26.1 Dark Down 34.9 192.3 Up 08:32:54 - 08:50:25 6865
Nikitin 08:40:48 -22.5 Dark Down 30.6 208.9 Up 08:32:03 - 08:49:34 6859
CU-SBO 08:40:49 -22.6 Dark Down 30.7 208.9 Up 08:32:03 - 08:49:34 6855
Reno 08:41:37 -26.3 Dark Down 35.1 193.1 Up 08:32:52 - 08:50:23 6849
Carson City 08:41:37 -26.7 Dark Down 35.4 193.2 Up 08:32:51 - 08:50:22 6825
Yerington 08:41:34 -26.8 Dark Down 35.5 193.9 Up 08:32:49 - 08:50:20 6813
Gardnerville 08:41:37 -26.9 Dark Down 35.7 193.3 Up 08:32:51 - 08:50:22 6809
Hawthorne 08:41:32 -27.1 Dark Down 35.9 194.6 Up 08:32:47 - 08:50:18 6783
Lee Vining 08:41:34 -27.8 Dark Down 36.5 194.2 Up 08:32:48 - 08:50:19 6745
Bishop 08:41:31 -28.2 Dark Down 36.9 195.1 Up 08:32:45 - 08:50:16 6705
Beatty 08:41:24 -28.4 Dark Down 37.0 197.1 Up 08:32:39 - 08:50:10 6673
Patrick 08:41:12 -29.2 Dark Down 37.7 200.8 Up 08:32:27 - 08:49:58 6567
Laughlin/Bullhead City 08:41:15 -29.6 Dark Down 38.1 200.1 Up 08:32:30 - 08:50:01 6550
Lake Havasu City 08:41:13 -30.2 Dark Down 38.7 200.6 Up 08:32:28 - 08:49:59 6501
Wildwood 08:41:29 -31.5 Dark Down 40.1 195.6 Up 08:32:44 - 08:50:15 6473
Idyllwild 08:41:22 -31.5 Dark Down 40.0 197.9 Up 08:32:36 - 08:50:07 6448
George/Scottsdale 08:41:03 -30.3 Dark Down 38.6 203.6 Up 08:32:18 - 08:49:49 6441
Calipatria 08:41:16 -31.8 Dark Down 40.3 199.5 Up 08:32:31 - 08:50:02 6402
Yuma 08:41:13 -32.0 Dark Down 40.5 200.7 Up 08:32:28 - 08:49:59 6369

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 469987, (2029/06/18 08:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.51  86
35Eta Oph      17:10:22.7 -15:43:29  2.6  8.63  95
PPM 233599     17:47:36.7 -14:43:34  5.9  0.57 104
PPM 233558     17:45:23.2 -14:26:47  8.3  0.10 103
469987         17:45:43.0 -14:23:17 13.4       103
Positions are for J2000

Event circumstances last updated at 2023/06/07 03:11:26 UT

Marc W. Buie, Southwest Research Institute

RECON