RECON: TNO occultation with 307251

Event between (307251) 02KW14 and star GA0600:33079687 with event index number of 2777135

Geocentric closest approach at 2029/06/07 10:09:21 UTC

J2000 position of star is 17:56:01.6 -28:18:44
Equinox of date position of star is 17:57:34.5 -28:18:51
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 20% 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 24.2 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 1089 seconds.
The 1-sigma cross-track error in the shadow position is 4578 km.
The sky-plane scale is 31366.4 km/arcsec.

The object has an absolute magnitude Hv=5.5
Diameter=457.1 km assuming a 5% albedo -- 19.7 sec chord
Diameter=186.6 km assuming a 30% albedo -- 8.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 307251, (2029/06/07 10:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.0 -26:29:41  0.9 19.30 134
34Ups Sco      17:32:46.1 -37:18:58  2.7 10.43 120
3 Sgr          17:49:24.9 -27:50:21  4.2  1.93 117
PPM 267596     18:00:31.1 -28:45:34  6.6  0.73 114
PPM 267512     17:57:26.0 -28:11:18  9.1  0.16 115
307251         17:57:53.3 -28:18:52 16.1       115
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 0.8 sigma about the mid-time.
The median site spacing is 30.7 km RECON observability=0.3 and success probability=2.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:08:16 -11.3 NT Up 9.3 196.7 Really Low 09:53:16 - 10:23:16 5066
Victoria 10:08:23 -14.1 AT Up 11.9 194.1 Really Low 09:53:23 - 10:23:23 5050
Peachland 10:08:13 -11.9 NT Up 10.1 197.3 Really Low 09:53:13 - 10:23:13 5035
Kelowna 10:08:14 -11.7 NT Up 9.9 197.5 Really Low 09:53:14 - 10:23:14 5033
Summerland 10:08:13 -12.0 AT Up 10.2 197.3 Really Low 09:53:13 - 10:23:13 5029
Penticton 10:08:13 -12.0 AT Up 10.2 197.4 Really Low 09:53:13 - 10:23:13 5026
Oliver 10:08:12 -12.3 AT Up 10.6 197.5 Really Low 09:53:12 - 10:23:12 5016
Anarchist Mountain Observatory 10:08:12 -12.4 AT Up 10.7 197.6 Really Low 09:53:12 - 10:23:12 5009
Okanogan 10:08:12 -13.0 AT Up 11.3 197.5 Really Low 09:53:12 - 10:23:12 4993
Brewster 10:08:12 -13.3 AT Up 11.6 197.3 Really Low 09:53:12 - 10:23:12 4988
Manson/Chelan 10:08:12 -13.6 AT Up 11.9 197.0 Really Low 09:53:12 - 10:23:12 4988
Wenatchee 10:08:13 -14.1 AT Up 12.4 196.9 Really Low 09:53:13 - 10:23:13 4976
Ellensburg 10:08:13 -14.5 AT Up 12.8 196.7 Really Low 09:53:13 - 10:23:13 4966
Yakima 10:08:13 -14.9 AT Up 13.2 196.7 Really Low 09:53:13 - 10:23:13 4954
Toppenish/White Swan 10:08:12 -15.0 AT Up 13.4 196.9 Really Low 09:53:12 - 10:23:12 4944
The Dalles 10:08:13 -16.0 AT Up 14.3 196.3 Really Low 09:53:13 - 10:23:13 4930
Maupin 10:08:13 -16.3 AT Up 14.7 196.4 Really Low 09:53:13 - 10:23:13 4914
PNWRO 10:08:07 -14.8 AT Up 13.5 198.2 Really Low 09:53:07 - 10:23:07 4909
Sisters 10:08:13 -17.2 AT Up 15.6 196.0 Really Low 09:53:13 - 10:23:13 4891
Bend 10:08:13 -17.4 AT Up 15.8 196.3 Really Low 09:53:13 - 10:23:13 4879
Oregon Observatory 10:08:13 -17.6 AT Up 16.0 196.2 Really Low 09:53:13 - 10:23:13 4875
Sleaford 10:07:42 -4.9 CT Up 4.5 208.8 Really Low 09:52:42 - 10:22:42 4858
Chiloquin 10:08:13 -18.9 Dark Up 17.4 195.9 Really Low 09:53:13 - 10:23:13 4831
Klamath Falls 10:08:12 -19.1 Dark Up 17.7 196.0 Really Low 09:53:12 - 10:23:12 4817
Cedarville 10:08:07 -19.1 Dark Up 18.0 197.5 Really Low 09:53:07 - 10:23:07 4764
Fall River/Burney 10:08:10 -20.0 Dark Up 18.7 196.4 Really Low 09:53:10 - 10:23:10 4763
Greenville 10:08:08 -20.6 Dark Up 19.5 196.9 Really Low 09:53:08 - 10:23:08 4717
Gimple 10:08:08 -20.6 Dark Up 19.5 197.0 Really Low 09:53:08 - 10:23:08 4716
Quincy 10:08:08 -20.8 Dark Up 19.7 197.0 Really Low 09:53:08 - 10:23:08 4708
Portola 10:08:06 -20.7 Dark Up 19.7 197.4 Really Low 09:53:06 - 10:23:06 4696
Reno 10:08:03 -20.7 Dark Up 19.8 198.0 Really Low 09:53:03 - 10:23:03 4673
Carson City 10:08:03 -21.0 Dark Up 20.1 198.1 Low 09:53:03 - 10:23:03 4656
Gardnerville 10:08:04 -21.2 Dark Up 20.4 198.1 Low 09:53:04 - 10:23:04 4645
Yerington 10:08:01 -20.9 Dark Up 20.2 198.6 Low 09:53:01 - 10:23:01 4637
Hawthorne 10:08:00 -21.0 Dark Up 20.5 199.2 Low 09:53:00 - 10:23:00 4606
Lee Vining 10:08:01 -21.7 Dark Up 21.1 198.8 Low 09:53:01 - 10:23:01 4589
Bishop 10:07:58 -21.9 Dark Up 21.5 199.5 Low 09:52:58 - 10:22:58 4546
Beatty 10:07:51 -21.6 Dark Up 21.5 201.0 Low 09:52:51 - 10:22:51 4493
Dunrhomin 10:07:20 -13.3 AT Up 14.6 210.4 Really Low 09:52:20 - 10:22:20 4397
Nikitin 10:07:19 -13.4 AT Up 14.8 210.4 Really Low 09:52:19 - 10:22:19 4388
CU-SBO 10:07:19 -13.5 AT Up 14.9 210.3 Really Low 09:52:19 - 10:22:19 4387
Wildwood 10:07:56 -24.7 Dark Up 24.7 199.8 Low 09:52:56 - 10:22:56 4382
Laughlin/Bullhead City 10:07:43 -21.9 Dark Up 22.5 203.2 Low 09:52:43 - 10:22:43 4358
Patrick 10:07:41 -21.4 Dark Up 22.0 203.8 Low 09:52:41 - 10:22:41 4357
Idyllwild 10:07:49 -24.1 Dark Up 24.4 201.6 Low 09:52:49 - 10:22:49 4326
Lake Havasu City 10:07:42 -22.4 Dark Up 23.0 203.5 Low 09:52:42 - 10:22:42 4317
Calipatria 10:07:44 -24.0 Dark Up 24.6 202.7 Low 09:52:44 - 10:22:44 4266
Yuma 10:07:41 -23.9 Dark Up 24.8 203.6 Low 09:52:41 - 10:22:41 4223
George/Scottsdale 10:07:33 -21.7 Dark Up 22.9 205.8 Low 09:52:33 - 10:22:33 4219

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, (2029/06/07 10:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.30 134
34Ups Sco      17:30:45.8 -37:17:46  2.7 10.43 120
3 Sgr          17:47:33.6 -27:49:51  4.2  1.93 117
PPM 267596     17:58:39.0 -28:45:33  6.6  0.73 114
PPM 267512     17:55:34.4 -28:11:09  9.1  0.16 115
307251         17:56:01.6 -28:18:44 16.1       115
Positions are for J2000

Event circumstances last updated at 2024/06/27 21:00:41 UT

Marc W. Buie, Southwest Research Institute

RECON