RECON: TNO occultation with 363401

Event between (363401) 03LB7 and star GA0640:20692303 with event index number of 1922494

Geocentric closest approach at 2028/07/05 04:15:20 UTC

J2000 position of star is 17:49:57.1 -24:52:57
Equinox of date position of star is 17:51:27.5 -24:53:16
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 3 degrees from the moon. Moon is 97% illuminated.
Apparent brightness V=23.0

[RECON map]
Object is 42.2 AU from the Sun and 41.3 AU from the Earth.
Apparent velocity is 23.5 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 678 seconds.
The 1-sigma cross-track error in the shadow position is 1982 km.
The sky-plane scale is 29918.3 km/arcsec.

The object has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 11.7 sec chord
Diameter=112.4 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 363401, (2028/07/05 04:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.6 -26:29:34  0.9 18.20  15
35Eta Oph      17:12:00.9 -15:45:29  2.6 13.03  12
PPM 267497     17:56:39.4 -24:53:24  6.4  1.12   4
PPM 267390     17:52:15.0 -24:51:33  7.8  0.13   3
PPM 267378     17:51:52.3 -24:53:07  9.6  0.04   3
363401         17:51:42.4 -24:53:19 16.3         3
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 1.3 sigma about the mid-time.
The median site spacing is 9.6 km RECON observability=0.1 and success probability=2.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:16:29 -6.3 NT Up 9.8 156.6 Really Low 04:01:29 - 04:31:29 4221
Kamloops 04:17:15 -1.0 CT Up 6.7 144.2 Really Low 04:02:15 - 04:32:15 3927
Kelowna 04:17:14 -2.0 CT Up 7.7 144.9 Really Low 04:02:14 - 04:32:14 3914
Peachland 04:17:16 -1.9 CT Up 7.6 144.6 Really Low 04:02:16 - 04:32:16 3904
Summerland 04:17:16 -2.0 CT Up 7.8 144.7 Really Low 04:02:16 - 04:32:16 3901
Penticton 04:17:16 -2.1 CT Up 7.9 144.8 Really Low 04:02:16 - 04:32:16 3900
Oliver 04:17:16 -2.4 CT Up 8.2 144.7 Really Low 04:02:16 - 04:32:16 3886
Anarchist Mountain Observatory 04:17:16 -2.6 CT Up 8.4 144.9 Really Low 04:02:16 - 04:32:16 3884
Okanogan 04:17:18 -2.9 CT Up 8.8 144.7 Really Low 04:02:18 - 04:32:18 3853
Brewster 04:17:19 -2.9 CT Up 9.0 144.5 Really Low 04:02:19 - 04:32:19 3838
Manson/Chelan 04:17:20 -2.9 CT Up 9.0 144.1 Really Low 04:02:20 - 04:32:20 3821
Wenatchee 04:17:22 -3.1 CT Up 9.3 144.0 Really Low 04:02:22 - 04:32:22 3798
Victoria 04:17:27 -0.8 Sun up Up 7.2 141.5 Really Low 04:02:27 - 04:32:27 3778
Ellensburg 04:17:24 -3.2 CT Up 9.6 143.7 Really Low 04:02:24 - 04:32:24 3775
PNWRO 04:17:21 -4.7 CT Up 11.0 145.0 Really Low 04:02:21 - 04:32:21 3767
Dunrhomin 04:16:52 -15.8 AT Up 20.9 156.0 Low 04:01:52 - 04:31:52 3758
Yakima 04:17:25 -3.5 CT Up 9.9 143.7 Really Low 04:02:25 - 04:32:25 3757
Toppenish/White Swan 04:17:24 -3.7 CT Up 10.1 143.8 Really Low 04:02:24 - 04:32:24 3751
Nikitin 04:16:52 -15.9 AT Up 21.1 156.0 Low 04:01:52 - 04:31:52 3748
CU-SBO 04:16:52 -16.0 AT Up 21.1 155.9 Low 04:01:52 - 04:31:52 3744
The Dalles 04:17:28 -3.8 CT Up 10.4 143.1 Really Low 04:02:28 - 04:32:28 3698
Maupin 04:17:28 -4.1 CT Up 10.8 143.1 Really Low 04:02:28 - 04:32:28 3682
Sisters 04:17:32 -4.4 CT Up 11.3 142.6 Really Low 04:02:32 - 04:32:32 3629
Bend 04:17:32 -4.7 CT Up 11.6 142.8 Really Low 04:02:32 - 04:32:32 3624
Oregon Observatory 04:17:33 -4.7 CT Up 11.7 142.7 Really Low 04:02:33 - 04:32:33 3612
Chiloquin 04:17:36 -5.3 CT Up 12.6 142.2 Really Low 04:02:36 - 04:32:36 3537
Cedarville 04:17:34 -6.9 NT Up 14.1 143.4 Really Low 04:02:34 - 04:32:34 3523
Klamath Falls 04:17:37 -5.5 CT Up 12.9 142.2 Really Low 04:02:37 - 04:32:37 3521
Fall River/Burney 04:17:38 -6.5 NT Up 14.0 142.4 Really Low 04:02:38 - 04:32:38 3468
Gimple 04:17:38 -7.4 NT Up 15.0 142.6 Really Low 04:02:38 - 04:32:38 3432
Greenville 04:17:38 -7.3 NT Up 14.9 142.6 Really Low 04:02:38 - 04:32:38 3430
Reno 04:17:36 -8.4 NT Up 15.9 143.4 Really Low 04:02:36 - 04:32:36 3425
Portola 04:17:38 -7.8 NT Up 15.4 142.9 Really Low 04:02:38 - 04:32:38 3424
Quincy 04:17:39 -7.5 NT Up 15.1 142.5 Really Low 04:02:39 - 04:32:39 3419
Yerington 04:17:36 -9.1 NT Up 16.7 143.8 Really Low 04:02:36 - 04:32:36 3409
Carson City 04:17:37 -8.6 NT Up 16.2 143.3 Really Low 04:02:37 - 04:32:37 3405
Hawthorne 04:17:35 -9.7 NT Up 17.3 144.2 Really Low 04:02:35 - 04:32:35 3396
Gardnerville 04:17:37 -8.8 NT Up 16.4 143.3 Really Low 04:02:37 - 04:32:37 3393
Lee Vining 04:17:38 -9.8 NT Up 17.5 143.7 Really Low 04:02:38 - 04:32:38 3352
Beatty 04:17:32 -11.9 NT Up 19.5 145.4 Really Low 04:02:32 - 04:32:32 3346
Bishop 04:17:36 -10.6 NT Up 18.3 144.2 Really Low 04:02:36 - 04:32:36 3335
Patrick 04:17:26 -14.6 AT Up 22.0 147.5 Low 04:02:26 - 04:32:26 3324
Laughlin/Bullhead City 04:17:28 -14.4 AT Up 21.9 146.9 Low 04:02:28 - 04:32:28 3292
George/Scottsdale 04:17:21 -17.0 AT Up 24.3 148.9 Low 04:02:21 - 04:32:21 3264
Lake Havasu City 04:17:29 -15.0 AT Up 22.5 146.9 Low 04:02:29 - 04:32:29 3257
Idyllwild 04:17:37 -14.0 AT Up 22.1 144.8 Low 04:02:37 - 04:32:37 3155
Calipatria 04:17:34 -15.1 AT Up 23.1 145.6 Low 04:02:34 - 04:32:34 3143
Yuma 04:17:32 -16.0 AT Up 23.9 146.3 Low 04:02:32 - 04:32:32 3136
Wildwood 04:17:42 -12.6 AT Up 20.9 143.3 Low 04:02:42 - 04:32:42 3130

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 363401, (2028/07/05 04:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.20  15
35Eta Oph      17:10:22.7 -15:43:29  2.6 13.03  12
PPM 267497     17:54:54.1 -24:53:13  6.4  1.12   4
PPM 267390     17:50:29.7 -24:51:11  7.8  0.13   3
PPM 267378     17:50:06.9 -24:52:44  9.6  0.04   3
363401         17:49:57.1 -24:52:57 16.3         3
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:30:34 UT

Marc W. Buie, Southwest Research Institute

RECON