RECON: TNO occultation with 307251

Event between (307251) 02KW14 and star GA0600:32657494 with event index number of 2777170

Geocentric closest approach at 2029/06/16 08:06:08 UTC

J2000 position of star is 17:55:16.0 -28:19:05
Equinox of date position of star is 17:56:48.9 -28:19:14
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon. Moon is 18% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 44.2 AU from the Sun and 43.2 AU from the Earth.
Apparent velocity is 24.8 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 1056 seconds.
The 1-sigma cross-track error in the shadow position is 4598 km.
The sky-plane scale is 31353.5 km/arcsec.

The object has an absolute magnitude Hv=5.5
Diameter=457.1 km assuming a 5% albedo -- 19.2 sec chord
Diameter=186.6 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 307251, (2029/06/16 08:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.1 -26:29:41  0.9 19.13 113
34Ups Sco      17:32:46.2 -37:18:58  2.7 10.34 126
3 Sgr          17:49:25.0 -27:50:21  4.2  1.77 131
PPM 267436     17:54:02.7 -28:27:22  8.4  0.69 132
PPM 267512     17:57:26.1 -28:11:18  9.1  0.15 132
307251         17:57:07.7 -28:19:15 17.0       133
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 0.9 sigma about the mid-time.
The median site spacing is 12.6 km RECON observability=0.5 and success probability=1.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:06:10 -16.0 AT Down 11.0 177.5 Really Low 07:51:10 - 08:21:10 6077
Kelowna 08:06:07 -16.8 AT Down 11.8 178.3 Really Low 07:51:07 - 08:21:07 6059
Peachland 08:06:08 -16.9 AT Down 11.9 178.1 Really Low 07:51:08 - 08:21:08 6057
Summerland 08:06:07 -17.0 AT Down 12.1 178.1 Really Low 07:51:07 - 08:21:07 6053
Penticton 08:06:07 -17.1 AT Down 12.1 178.2 Really Low 07:51:07 - 08:21:07 6051
Sleaford 08:05:30 -13.4 AT Down 9.0 190.2 Really Low 07:50:30 - 08:20:30 6045
Oliver 08:06:07 -17.4 AT Down 12.5 178.2 Really Low 07:51:07 - 08:21:07 6043
Anarchist Mountain Observatory 08:06:07 -17.6 AT Down 12.7 178.4 Really Low 07:51:07 - 08:21:07 6039
Victoria 08:06:19 -18.1 Dark Down 13.0 174.8 Really Low 07:51:19 - 08:21:19 6025
Okanogan 08:06:07 -18.3 Dark Down 13.3 178.2 Really Low 07:51:07 - 08:21:07 6023
Brewster 08:06:08 -18.5 Dark Down 13.6 178.0 Really Low 07:51:08 - 08:21:08 6016
Manson/Chelan 08:06:09 -18.7 Dark Down 13.8 177.7 Really Low 07:51:09 - 08:21:09 6011
Wenatchee 08:06:10 -19.2 Dark Down 14.2 177.5 Really Low 07:51:10 - 08:21:10 5998
Ellensburg 08:06:11 -19.6 Dark Down 14.6 177.3 Really Low 07:51:11 - 08:21:11 5987
Yakima 08:06:11 -20.0 Dark Down 15.0 177.3 Really Low 07:51:11 - 08:21:11 5975
Toppenish/White Swan 08:06:11 -20.3 Dark Down 15.3 177.5 Really Low 07:51:11 - 08:21:11 5969
PNWRO 08:06:06 -20.6 Dark Down 15.7 178.8 Really Low 07:51:06 - 08:21:06 5957
The Dalles 08:06:13 -21.0 Dark Down 16.0 176.7 Really Low 07:51:13 - 08:21:13 5945
Maupin 08:06:13 -21.5 Dark Down 16.4 176.8 Really Low 07:51:13 - 08:21:13 5932
Sisters 08:06:14 -22.3 Dark Down 17.3 176.4 Really Low 07:51:14 - 08:21:14 5904
Bend 08:06:14 -22.6 Dark Down 17.5 176.6 Really Low 07:51:14 - 08:21:14 5896
Oregon Observatory 08:06:14 -22.8 Dark Down 17.7 176.5 Really Low 07:51:14 - 08:21:14 5891
Chiloquin 08:06:16 -24.1 Dark Down 19.0 176.1 Really Low 07:51:16 - 08:21:16 5844
Klamath Falls 08:06:16 -24.4 Dark Down 19.4 176.1 Really Low 07:51:16 - 08:21:16 5832
Cedarville 08:06:11 -25.1 Dark Down 20.1 177.6 Low 07:51:11 - 08:21:11 5806
Fall River/Burney 08:06:15 -25.6 Dark Down 20.5 176.5 Low 07:51:15 - 08:21:15 5787
Greenville 08:06:13 -26.5 Dark Down 21.5 176.8 Low 07:51:13 - 08:21:13 5751
Gimple 08:06:14 -26.5 Dark Down 21.5 176.9 Low 07:51:14 - 08:21:14 5751
Quincy 08:06:13 -26.7 Dark Down 21.7 176.8 Low 07:51:13 - 08:21:13 5743
Portola 08:06:12 -26.8 Dark Down 21.8 177.3 Low 07:51:12 - 08:21:12 5738
Reno 08:06:10 -27.1 Dark Down 22.1 177.9 Low 07:51:10 - 08:21:10 5727
Carson City 08:06:10 -27.4 Dark Down 22.5 177.9 Low 07:51:10 - 08:21:10 5712
Yerington 08:06:08 -27.6 Dark Down 22.7 178.5 Low 07:51:08 - 08:21:08 5703
Gardnerville 08:06:10 -27.7 Dark Down 22.7 178.0 Low 07:51:10 - 08:21:10 5701
Hawthorne 08:06:06 -28.1 Dark Down 23.1 179.0 Low 07:51:06 - 08:21:06 5682
Dunrhomin 08:05:21 -24.7 Dark Down 20.5 191.5 Low 07:50:21 - 08:20:21 5674
Nikitin 08:05:21 -24.8 Dark Down 20.7 191.5 Low 07:50:21 - 08:20:21 5667
CU-SBO 08:05:21 -24.9 Dark Down 20.8 191.4 Low 07:50:21 - 08:20:21 5665
Lee Vining 08:06:08 -28.6 Dark Down 23.7 178.5 Low 07:51:08 - 08:21:08 5658
Bishop 08:06:05 -29.2 Dark Down 24.3 179.2 Low 07:51:05 - 08:21:05 5630
Beatty 08:06:00 -29.6 Dark Down 24.8 180.8 Low 07:51:00 - 08:21:00 5604
Patrick 08:05:50 -30.8 Dark Down 26.2 183.6 Low 07:50:50 - 08:20:50 5522
Laughlin/Bullhead City 08:05:52 -31.1 Dark Down 26.5 182.9 Low 07:50:52 - 08:20:52 5512
Lake Havasu City 08:05:51 -31.8 Dark Down 27.1 183.2 Low 07:50:51 - 08:20:51 5477
Wildwood 08:06:06 -32.5 Dark Down 27.6 179.0 Low 07:51:06 - 08:21:06 5471
Idyllwild 08:06:00 -32.7 Dark Down 27.9 180.8 Low 07:51:00 - 08:21:00 5449
George/Scottsdale 08:05:42 -32.2 Dark Down 27.7 185.6 Low 07:50:42 - 08:20:42 5424
Calipatria 08:05:55 -33.2 Dark Down 28.5 182.0 Low 07:50:55 - 08:20:55 5411
Yuma 08:05:52 -33.6 Dark Down 28.9 182.9 Low 07:50:52 - 08:20:52 5385

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 307251, (2029/06/16 08:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.13 113
34Ups Sco      17:30:45.8 -37:17:46  2.7 10.34 126
3 Sgr          17:47:33.6 -27:49:51  4.2  1.77 131
PPM 267436     17:52:10.8 -28:27:04  8.4  0.69 132
PPM 267512     17:55:34.4 -28:11:09  9.1  0.15 132
307251         17:55:16.0 -28:19:05 17.0       132
Positions are for J2000

Event circumstances last updated at 2024/06/27 21:02:24 UT

Marc W. Buie, Southwest Research Institute

RECON