RECON: TNO occultation with 04KE19

Event between 04KE19 and star GA0660:07929724 with event index number of 1972870

Geocentric closest approach at 2024/06/20 09:18:52 UTC

J2000 position of star is 16:46:47.7 -23:08:08
Equinox of date position of star is 16:48:14.0 -23:10:37
Stellar brightness G=15.2, 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 97% illuminated.
Apparent brightness V=22.8

[RECON map]
Object is 43.3 AU from the Sun and 42.3 AU from the Earth.
Apparent velocity is 23.6 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 226 seconds.
The 1-sigma cross-track error in the shadow position is 2378 km.
The sky-plane scale is 30675.5 km/arcsec.

The object has an absolute magnitude Hv=6.4
Diameter=319.2 km assuming a 5% albedo -- 13.5 sec chord
Diameter=130.3 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04KE19, (2024/06/20 09:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.7 -26:29:03  0.9  5.14   1
23Tau Sco      16:37:24.6 -28:15:53  2.8  5.64   3
PPM 266088     16:54:52.1 -20:27:16  5.7  3.12   8
PPM 265937     16:47:57.4 -22:40:16  8.4  0.51   6
PPM 265945     16:48:13.8 -23:08:41  9.8  0.03   5
04KE19         16:48:16.3 -23:10:41 15.2         6
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 4.0 sigma about the mid-time.
The median site spacing is 45.2 km RECON observability=0.1 and success probability=1.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 09:17:43 -14.1 AT Up 9.5 213.6 Really Low 09:02:43 - 09:32:43 -2229
Kelowna 09:17:39 -14.7 AT Up 9.8 214.5 Really Low 09:02:39 - 09:32:39 -2263
Peachland 09:17:39 -14.8 AT Up 10.0 214.2 Really Low 09:02:39 - 09:32:39 -2264
Summerland 09:17:39 -15.0 AT Up 10.1 214.3 Really Low 09:02:39 - 09:32:39 -2269
Penticton 09:17:39 -15.0 AT Up 10.2 214.4 Really Low 09:02:39 - 09:32:39 -2273
Victoria 09:17:46 -16.7 AT Up 12.4 211.2 Really Low 09:02:46 - 09:32:46 -2274
Oliver 09:17:38 -15.3 AT Up 10.4 214.5 Really Low 09:02:38 - 09:32:38 -2284
Anarchist Mountain Observatory 09:17:37 -15.5 AT Up 10.5 214.6 Really Low 09:02:37 - 09:32:37 -2291
Okanogan 09:17:36 -16.1 AT Up 11.1 214.5 Really Low 09:02:36 - 09:32:36 -2312
Brewster 09:17:36 -16.4 AT Up 11.4 214.4 Really Low 09:02:36 - 09:32:36 -2320
Manson/Chelan 09:17:36 -16.7 AT Up 11.7 214.1 Really Low 09:02:36 - 09:32:36 -2323
Wenatchee 09:17:35 -17.2 AT Up 12.2 214.0 Really Low 09:02:35 - 09:32:35 -2339
Ellensburg 09:17:35 -17.6 AT Up 12.6 213.8 Really Low 09:02:35 - 09:32:35 -2352
Sleaford 09:17:15 -9.2 NT Down 2.7 225.5 Really Low 09:02:15 - 09:32:15 -2357
Yakima 09:17:34 -18.0 Dark Up 13.0 213.9 Really Low 09:02:34 - 09:32:34 -2367
Toppenish/White Swan 09:17:33 -18.2 Dark Up 13.1 214.0 Really Low 09:02:33 - 09:32:33 -2377
The Dalles 09:17:34 -19.1 Dark Up 14.0 213.5 Really Low 09:02:34 - 09:32:34 -2400
PNWRO 09:17:28 -18.2 Dark Up 12.8 215.4 Really Low 09:02:28 - 09:32:28 -2406
Maupin 09:17:33 -19.5 Dark Up 14.3 213.6 Really Low 09:02:33 - 09:32:33 -2418
Sisters 09:17:32 -20.4 Dark Up 15.3 213.3 Really Low 09:02:32 - 09:32:32 -2449
Bend 09:17:31 -20.6 Dark Up 15.4 213.6 Really Low 09:02:31 - 09:32:31 -2461
Oregon Observatory 09:17:31 -20.8 Dark Up 15.6 213.5 Really Low 09:02:31 - 09:32:31 -2467
Chiloquin 09:17:29 -22.1 Dark Up 16.8 213.3 Really Low 09:02:29 - 09:32:29 -2520
Klamath Falls 09:17:28 -22.4 Dark Up 17.1 213.5 Really Low 09:02:28 - 09:32:28 -2537
Cedarville 09:17:22 -22.7 Dark Up 17.0 214.9 Really Low 09:02:22 - 09:32:22 -2585
Fall River/Burney 09:17:25 -23.5 Dark Up 17.9 214.0 Really Low 09:02:25 - 09:32:25 -2595
Greenville 09:17:21 -24.3 Dark Up 18.5 214.5 Really Low 09:02:21 - 09:32:21 -2644
Gimple 09:17:22 -24.2 Dark Up 18.5 214.6 Really Low 09:02:22 - 09:32:22 -2645
Quincy 09:17:22 -24.4 Dark Up 18.7 214.6 Really Low 09:02:22 - 09:32:22 -2654
Portola 09:17:20 -24.5 Dark Up 18.6 215.0 Really Low 09:02:20 - 09:32:20 -2664
Reno 09:17:17 -24.5 Dark Up 18.5 215.6 Really Low 09:02:17 - 09:32:17 -2685
Carson City 09:17:17 -24.9 Dark Up 18.8 215.7 Really Low 09:02:17 - 09:32:17 -2703
Gardnerville 09:17:16 -25.1 Dark Up 18.9 215.8 Really Low 09:02:16 - 09:32:16 -2716
Yerington 09:17:14 -24.9 Dark Up 18.6 216.2 Really Low 09:02:14 - 09:32:14 -2720
Hawthorne 09:17:12 -25.2 Dark Up 18.8 216.8 Really Low 09:02:12 - 09:32:12 -2750
Lee Vining 09:17:12 -25.9 Dark Up 19.5 216.5 Really Low 09:02:12 - 09:32:12 -2774
Bishop 09:17:09 -26.2 Dark Up 19.6 217.2 Really Low 09:02:09 - 09:32:09 -2815
Beatty 09:17:02 -26.2 Dark Up 19.2 218.6 Really Low 09:02:02 - 09:32:02 -2861
Dunrhomin 09:16:39 -19.0 Dark Up 10.6 227.0 Really Low 09:01:39 - 09:31:39 -2866
Nikitin 09:16:39 -19.2 Dark Up 10.8 227.0 Really Low 09:01:39 - 09:31:39 -2875
CU-SBO 09:16:39 -19.3 Dark Up 10.8 226.9 Really Low 09:01:39 - 09:31:39 -2877
Patrick 09:16:51 -26.6 Dark Up 18.8 221.2 Really Low 09:01:51 - 09:31:51 -2986
Laughlin/Bullhead City 09:16:52 -27.1 Dark Up 19.4 220.7 Really Low 09:01:52 - 09:31:52 -2990
Wildwood 09:17:02 -29.3 Dark Up 22.3 217.8 Low 09:02:02 - 09:32:02 -2999
Lake Havasu City 09:16:50 -27.6 Dark Up 19.8 221.1 Really Low 09:01:50 - 09:31:50 -3034
Idyllwild 09:16:56 -29.1 Dark Up 21.6 219.4 Low 09:01:56 - 09:31:56 -3044
Calipatria 09:16:51 -29.2 Dark Up 21.5 220.5 Low 09:01:51 - 09:31:51 -3099
George/Scottsdale 09:16:41 -27.4 Dark Up 19.0 223.2 Really Low 09:01:41 - 09:31:41 -3119
Yuma 09:16:47 -29.3 Dark Up 21.3 221.3 Low 09:01:47 - 09:31:47 -3139

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 04KE19, (2024/06/20 09:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.14   1
23Tau Sco      16:35:52.9 -28:12:58  2.8  5.64   3
PPM 266088     16:53:25.2 -20:24:57  5.7  3.12   8
PPM 265937     16:46:29.2 -22:37:43  8.4  0.51   6
PPM 265945     16:46:45.2 -23:06:09  9.8  0.03   5
04KE19         16:46:47.7 -23:08:08 15.2         5
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:14:20 UT

Marc W. Buie, Southwest Research Institute

RECON